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1,802.1006 | Detuning the Honeycomb of $\alpha$-RuCl$_{3}$: Pressure-Dependent
Optical Studies Reveal Broken Symmetry | The honeycomb Mott insulator $\alpha$-RuCl$_3$ loses its low-temperature
magnetic order by pressure. We report clear evidence for a dimerized structure
at $P>1$ GPa and observe the breakdown of the relativistic $j_{\rm eff}$
picture in this regime strongly affecting the electronic properties. A
pressure-induced Kitaev quantum spin liquid cannot occur in this broken
symmetry state. We shed light on the new phase by broad-band infrared
spectroscopy of the low-temperature properties of $\alpha$-RuCl$_{3}$ and ab
initio density functional theory calculations, both under hydrostatic pressure.
| cond-mat.str-el | the honeycomb mott insulator alpharucl_3 loses its lowtemperature magnetic order by pressure we report clear evidence for a dimerized structure at p1 gpa and observe the breakdown of the relativistic j_rm eff picture in this regime strongly affecting the electronic properties a pressureinduced kitaev quantum spin liquid cannot occur in this broken symmetry state we shed light on the new phase by broadband infrared spectroscopy of the lowtemperature properties of alpharucl_3 and ab initio density functional theory calculations both under hydrostatic pressure | [['the', 'honeycomb', 'mott', 'insulator', 'alpharucl_3', 'loses', 'its', 'lowtemperature', 'magnetic', 'order', 'by', 'pressure', 'we', 'report', 'clear', 'evidence', 'for', 'a', 'dimerized', 'structure', 'at', 'p1', 'gpa', 'and', 'observe', 'the', 'breakdown', 'of', 'the', 'relativistic', 'j_rm', 'eff', 'picture', 'in', 'this', 'regime', 'strongly', 'affecting', 'the', 'electronic', 'properties', 'a', 'pressureinduced', 'kitaev', 'quantum', 'spin', 'liquid', 'can', 'not', 'occur', 'in', 'this', 'broken', 'symmetry', 'state', 'we', 'shed', 'light', 'on', 'the', 'new', 'phase', 'by', 'broadband', 'infrared', 'spectroscopy', 'of', 'the', 'lowtemperature', 'properties', 'of', 'alpharucl_3', 'and', 'ab', 'initio', 'density', 'functional', 'theory', 'calculations', 'both', 'under', 'hydrostatic', 'pressure']] | [-0.19668708627774234, 0.2424287300540067, -0.11706508552734123, 0.017006042219855518, -0.051746172078671944, -0.14009312601445847, 0.15273114003616958, 0.4125116874789258, -0.2621091706534505, -0.2530841450038624, -0.015146892946998936, -0.30961990592081146, -0.1340972785894052, 0.10869592870866139, 0.09730808031801359, 0.027043520763982087, -0.06783032905400159, -0.061252867572952105, -0.18709377861435872, -0.18427275229211762, 0.24515011290043412, 0.019744443251324975, 0.28904957922613134, 0.12227950754073302, -0.01826739711378398, 0.0011154562683708697, 0.17852166317773602, 0.00489732924938561, -0.2441472992727376, -0.03262585255104196, 0.22503824477611356, -0.12394739493323736, 0.1667850891602259, -0.47869735139321135, -0.2518071720533701, -0.022371630498533506, 0.06300330184489848, 0.1355874647936189, -0.09721967843445355, -0.2924969112837171, 0.00419401346021388, -0.1758049016773521, -0.176821814928518, -0.1881872381824237, -0.08613711005323622, -0.06481135089030343, -0.18305181662891487, 0.15984534822875657, 0.04869324790246515, 0.14112513962526826, -0.1304323949068448, -0.10338721773306649, -0.09085381206641176, -0.005848096380661051, 0.015710409147193634, 0.08148596949695823, 0.17246632107550344, -0.17173677091683115, -0.10758998401530356, 0.42076554091041346, -0.0545090753879645, 0.038026497463684486, 0.15045766129175267, -0.22757343740303473, -0.15914932664214487, 0.18367348399843617, 0.04287578239588134, 0.0714698471016733, -0.10525033651102132, 0.11960555243176824, -0.02988346786861005, 0.24077397690390248, -0.03194897883313607, 0.1024772022368319, 0.31858734034719954, 0.19495524878400455, -0.005921944998294474, 0.12763022226337567, -0.13954733475111425, -0.07311165833800852, -0.24260314950068673, -0.17986538436218916, -0.21719938323058816, 0.09674825353554242, -0.06217448912660524, -0.17042317956192307, 0.3924672340929329, 0.154681209087686, 0.09098640585834362, -0.10254587175840714, 0.23058933930763278, 0.09124491225187499, -0.012827451817736209, 0.061700737676078296, 0.29066546369029816, 0.21977272818386778, 0.11522615686934216, -0.37138557228742236, 0.047943717466263344, 0.04179105068085693] |
1,802.10061 | Dynamical classification of topological quantum phases | Topological phase of matter is now a mainstream of research in condensed
matter physics, of which the classification, synthesis, and detection of
topological states have brought excitements over the recent decade while remain
incomplete with ongoing challenges in both theory and experiment. Here we
propose to establish a universal dynamical characterization of the topological
quantum phases classified by integers, and further propose the high-precision
dynamical schemes to detect such states. The framework of {the dynamical
classification theory} consists of basic theorems. First, we uncover that
classifying a $d$-dimensional ($d$D) gapped topological phase {of generic
multibands} can reduce to a ($d-1$)D invariant defined on so-called band
inversion surfaces (BISs), rendering a {\it bulk-surface duality} which
simplifies the topological characterization. Further, we show in quenching
across phase boundary the (pseudo)spin dynamics to exhibit unique topological
patterns on BISs, which are attributed to the post-quench bulk topology and
manifest a {\it dynamical bulk-surface correspondence}. For this the
topological phase is classified by a dynamical topological invariant measured
from dynamical spin-texture field on the BISs. Applications to quenching
experiments on feasible models are proposed and studied, demonstrating the new
experimental strategies to detect topological phases with high feasibility.
This work opens a broad new direction to classify and detect topological phases
by quantum dynamics.
| cond-mat.mes-hall cond-mat.str-el quant-ph | topological phase of matter is now a mainstream of research in condensed matter physics of which the classification synthesis and detection of topological states have brought excitements over the recent decade while remain incomplete with ongoing challenges in both theory and experiment here we propose to establish a universal dynamical characterization of the topological quantum phases classified by integers and further propose the highprecision dynamical schemes to detect such states the framework of the dynamical classification theory consists of basic theorems first we uncover that classifying a ddimensional dd gapped topological phase of generic multibands can reduce to a d1d invariant defined on socalled band inversion surfaces biss rendering a it bulksurface duality which simplifies the topological characterization further we show in quenching across phase boundary the pseudospin dynamics to exhibit unique topological patterns on biss which are attributed to the postquench bulk topology and manifest a it dynamical bulksurface correspondence for this the topological phase is classified by a dynamical topological invariant measured from dynamical spintexture field on the biss applications to quenching experiments on feasible models are proposed and studied demonstrating the new experimental strategies to detect topological phases with high feasibility this work opens a broad new direction to classify and detect topological phases by quantum dynamics | [['topological', 'phase', 'of', 'matter', 'is', 'now', 'a', 'mainstream', 'of', 'research', 'in', 'condensed', 'matter', 'physics', 'of', 'which', 'the', 'classification', 'synthesis', 'and', 'detection', 'of', 'topological', 'states', 'have', 'brought', 'excitements', 'over', 'the', 'recent', 'decade', 'while', 'remain', 'incomplete', 'with', 'ongoing', 'challenges', 'in', 'both', 'theory', 'and', 'experiment', 'here', 'we', 'propose', 'to', 'establish', 'a', 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1,802.10062 | CSRNet: Dilated Convolutional Neural Networks for Understanding the
Highly Congested Scenes | We propose a network for Congested Scene Recognition called CSRNet to provide
a data-driven and deep learning method that can understand highly congested
scenes and perform accurate count estimation as well as present high-quality
density maps. The proposed CSRNet is composed of two major components: a
convolutional neural network (CNN) as the front-end for 2D feature extraction
and a dilated CNN for the back-end, which uses dilated kernels to deliver
larger reception fields and to replace pooling operations. CSRNet is an
easy-trained model because of its pure convolutional structure. We demonstrate
CSRNet on four datasets (ShanghaiTech dataset, the UCF_CC_50 dataset, the
WorldEXPO'10 dataset, and the UCSD dataset) and we deliver the state-of-the-art
performance. In the ShanghaiTech Part_B dataset, CSRNet achieves 47.3% lower
Mean Absolute Error (MAE) than the previous state-of-the-art method. We extend
the targeted applications for counting other objects, such as the vehicle in
TRANCOS dataset. Results show that CSRNet significantly improves the output
quality with 15.4% lower MAE than the previous state-of-the-art approach.
| cs.CV | we propose a network for congested scene recognition called csrnet to provide a datadriven and deep learning method that can understand highly congested scenes and perform accurate count estimation as well as present highquality density maps the proposed csrnet is composed of two major components a convolutional neural network cnn as the frontend for 2d feature extraction and a dilated cnn for the backend which uses dilated kernels to deliver larger reception fields and to replace pooling operations csrnet is an easytrained model because of its pure convolutional structure we demonstrate csrnet on four datasets shanghaitech dataset the ucf_cc_50 dataset the worldexpo10 dataset and the ucsd dataset and we deliver the stateoftheart performance in the shanghaitech part_b dataset csrnet achieves 473 lower mean absolute error mae than the previous stateoftheart method we extend the targeted applications for counting other objects such as the vehicle in trancos dataset results show that csrnet significantly improves the output quality with 154 lower mae than the previous stateoftheart approach | [['we', 'propose', 'a', 'network', 'for', 'congested', 'scene', 'recognition', 'called', 'csrnet', 'to', 'provide', 'a', 'datadriven', 'and', 'deep', 'learning', 'method', 'that', 'can', 'understand', 'highly', 'congested', 'scenes', 'and', 'perform', 'accurate', 'count', 'estimation', 'as', 'well', 'as', 'present', 'highquality', 'density', 'maps', 'the', 'proposed', 'csrnet', 'is', 'composed', 'of', 'two', 'major', 'components', 'a', 'convolutional', 'neural', 'network', 'cnn', 'as', 'the', 'frontend', 'for', '2d', 'feature', 'extraction', 'and', 'a', 'dilated', 'cnn', 'for', 'the', 'backend', 'which', 'uses', 'dilated', 'kernels', 'to', 'deliver', 'larger', 'reception', 'fields', 'and', 'to', 'replace', 'pooling', 'operations', 'csrnet', 'is', 'an', 'easytrained', 'model', 'because', 'of', 'its', 'pure', 'convolutional', 'structure', 'we', 'demonstrate', 'csrnet', 'on', 'four', 'datasets', 'shanghaitech', 'dataset', 'the', 'ucf_cc_50', 'dataset', 'the', 'worldexpo10', 'dataset', 'and', 'the', 'ucsd', 'dataset', 'and', 'we', 'deliver', 'the', 'stateoftheart', 'performance', 'in', 'the', 'shanghaitech', 'part_b', 'dataset', 'csrnet', 'achieves', '473', 'lower', 'mean', 'absolute', 'error', 'mae', 'than', 'the', 'previous', 'stateoftheart', 'method', 'we', 'extend', 'the', 'targeted', 'applications', 'for', 'counting', 'other', 'objects', 'such', 'as', 'the', 'vehicle', 'in', 'trancos', 'dataset', 'results', 'show', 'that', 'csrnet', 'significantly', 'improves', 'the', 'output', 'quality', 'with', '154', 'lower', 'mae', 'than', 'the', 'previous', 'stateoftheart', 'approach']] | [-0.03923369442652683, -0.03391134212615948, -0.04394289182943286, 0.03431422310807039, -0.06752996009265992, -0.15727582531752624, -0.0017203089618266908, 0.44830070881664386, -0.20977745113174426, -0.3713553108709173, 0.06745109859528306, -0.304435089739051, -0.1739649603463298, 0.24651230027059243, -0.14866166615835819, 0.07725282351127855, 0.16184994974316447, 0.047754704856715145, -0.06297613122247651, -0.2908269061322718, 0.22741738578127527, 0.048151024627075045, 0.3878428858656299, 0.023017404534556887, 0.14215542342080992, -0.059367709464616385, -0.014716521158323058, -0.028854163890658802, -0.03946264204328117, 0.18824825556291713, 0.2648780965939038, 0.17344338815670712, 0.2640645747013002, -0.3729388538142381, -0.21672055381189523, 0.04891302863398761, 0.13294361381608696, 0.07423293088040346, 0.004197670600342741, -0.3535077686141605, 0.09988080713386573, -0.2093146704423007, 0.043752231960830515, -0.15431064292445687, -0.04874521660821318, -0.0295301947422737, -0.3059365092680298, 0.07612743782039526, 0.054615771767906156, 0.05134813656082, -0.04898722084064859, -0.19147635612671085, 0.01317690448132715, 0.1736771741173476, -0.054398569820500176, 0.10674058508265055, 0.1504602324620369, -0.20046328693239784, -0.13322676674811387, 0.3472393763028771, -0.11314945595222525, -0.17003940308660817, 0.17337952328680162, -0.03411572917358824, -0.1271562310609898, 0.12197870402054095, 0.2556029549304202, 0.11770057777925594, -0.1226163978971958, -0.04289867208936349, -0.07932334299916344, 0.19855073578884266, 0.041477553921028906, 0.005010404092676801, 0.10311362779687838, 0.31065200018679345, 0.07517176676637806, 0.15015805948795635, -0.20925779574664247, -0.016809769707733332, -0.16565560910599364, -0.09639006302085994, -0.1827066029861935, -0.035476644620573594, -0.1071131410803203, -0.16042722110276572, 0.4198478887948933, 0.25759236096615895, 0.1956085047164669, 0.1524770537304172, 0.37096433293508607, -0.019080527552454932, 0.13787824577575855, 0.13127285872294675, 0.1856984043896678, 0.0015435173159088094, 0.11611161037081098, -0.15148688314062617, 0.03720392594742446, 0.07861717710231482] |
1,802.10063 | Low lying magnetic states of the mixed valence cobalt ludwigite | There are two interpretations offered for the different structural and
magnetic properties of the mixed valence homo-metallic ludwigites, Co3O2BO3 and
Fe3O2BO3. One of them associates the physical behavior to charge ordering
processes among the cations, as is well known in simpler oxides. The other
attributes the effects to local pairwise magnetic interactions. Recently first
principles calculations in the iron ludwigite have shown that the structural
cation dimerization is due to the formation of strong magnetic dyads supporting
the second model. Here we confirm the dominance of magnetic interactions to
explain the absence of dimerization in the cobalt compound. Density functional
non-collinear spin calculations are carried out on Co3O2BO3 to determine its
low temperature magnetic order. Low spin is found on tri-valent cobalt sites,
thus preventing the formation of the ferromagnetic dyad, the mechanism which
favors dimerization in Fe3O2BO3. We conclude that the difference between high
spin Fe3+ and low spin Co3+ pairwise interactions is responsible for the
observed differences between the two compounds. The pairwise magnetic
interactions also explain the difference between the existence of low
temperature bulk AF state in the Fe ludwigite and its absence in the Co
material.
| cond-mat.mtrl-sci | there are two interpretations offered for the different structural and magnetic properties of the mixed valence homometallic ludwigites co3o2bo3 and fe3o2bo3 one of them associates the physical behavior to charge ordering processes among the cations as is well known in simpler oxides the other attributes the effects to local pairwise magnetic interactions recently first principles calculations in the iron ludwigite have shown that the structural cation dimerization is due to the formation of strong magnetic dyads supporting the second model here we confirm the dominance of magnetic interactions to explain the absence of dimerization in the cobalt compound density functional noncollinear spin calculations are carried out on co3o2bo3 to determine its low temperature magnetic order low spin is found on trivalent cobalt sites thus preventing the formation of the ferromagnetic dyad the mechanism which favors dimerization in fe3o2bo3 we conclude that the difference between high spin fe3 and low spin co3 pairwise interactions is responsible for the observed differences between the two compounds the pairwise magnetic interactions also explain the difference between the existence of low temperature bulk af state in the fe ludwigite and its absence in the co material | [['there', 'are', 'two', 'interpretations', 'offered', 'for', 'the', 'different', 'structural', 'and', 'magnetic', 'properties', 'of', 'the', 'mixed', 'valence', 'homometallic', 'ludwigites', 'co3o2bo3', 'and', 'fe3o2bo3', 'one', 'of', 'them', 'associates', 'the', 'physical', 'behavior', 'to', 'charge', 'ordering', 'processes', 'among', 'the', 'cations', 'as', 'is', 'well', 'known', 'in', 'simpler', 'oxides', 'the', 'other', 'attributes', 'the', 'effects', 'to', 'local', 'pairwise', 'magnetic', 'interactions', 'recently', 'first', 'principles', 'calculations', 'in', 'the', 'iron', 'ludwigite', 'have', 'shown', 'that', 'the', 'structural', 'cation', 'dimerization', 'is', 'due', 'to', 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1,802.10064 | $L$-functions of ${\mathrm{GL}}(2n):$ $p$-adic properties and
non-vanishing of twists | The principal aim of this article is to attach and study $p$-adic
$L$-functions to cohomological cuspidal automorphic representations $\Pi$ of
$\mathrm{GL}(2n)$ over a totally real field $F$ admitting a Shalika model. We
use a modular symbol approach, along the global lines of the work of Ash and
Ginzburg, but our results are more definitive since we draw heavily upon the
methods used in the recent and separate works of all the three authors. By
construction our $p$-adic $L$-functions are distributions on the Galois group
of the maximal abelian extension of $F$ unramified outside $p\infty$. Moreover
we work under a weaker Panchishkine type condition on $\Pi_p$ rather than the
full ordinariness condition. Finally, we prove the so-called Manin relations
between the $p$-adic $L$-functions at all critical points. This has the
striking consequence that, given a unitary $\Pi$ whose standard $L$-function
admits at least two critical points, and given a prime $p$ such that $\Pi_p$ is
ordinary, the central critical value $L(\tfrac12, \Pi\otimes\chi)$ is non-zero
for all except finitely many Dirichlet characters $\chi$ of $p$-power
conductor.
| math.NT | the principal aim of this article is to attach and study padic lfunctions to cohomological cuspidal automorphic representations pi of mathrmgl2n over a totally real field f admitting a shalika model we use a modular symbol approach along the global lines of the work of ash and ginzburg but our results are more definitive since we draw heavily upon the methods used in the recent and separate works of all the three authors by construction our padic lfunctions are distributions on the galois group of the maximal abelian extension of f unramified outside pinfty moreover we work under a weaker panchishkine type condition on pi_p rather than the full ordinariness condition finally we prove the socalled manin relations between the padic lfunctions at all critical points this has the striking consequence that given a unitary pi whose standard lfunction admits at least two critical points and given a prime p such that pi_p is ordinary the central critical value ltfrac12 piotimeschi is nonzero for all except finitely many dirichlet characters chi of ppower conductor | [['the', 'principal', 'aim', 'of', 'this', 'article', 'is', 'to', 'attach', 'and', 'study', 'padic', 'lfunctions', 'to', 'cohomological', 'cuspidal', 'automorphic', 'representations', 'pi', 'of', 'mathrmgl2n', 'over', 'a', 'totally', 'real', 'field', 'f', 'admitting', 'a', 'shalika', 'model', 'we', 'use', 'a', 'modular', 'symbol', 'approach', 'along', 'the', 'global', 'lines', 'of', 'the', 'work', 'of', 'ash', 'and', 'ginzburg', 'but', 'our', 'results', 'are', 'more', 'definitive', 'since', 'we', 'draw', 'heavily', 'upon', 'the', 'methods', 'used', 'in', 'the', 'recent', 'and', 'separate', 'works', 'of', 'all', 'the', 'three', 'authors', 'by', 'construction', 'our', 'padic', 'lfunctions', 'are', 'distributions', 'on', 'the', 'galois', 'group', 'of', 'the', 'maximal', 'abelian', 'extension', 'of', 'f', 'unramified', 'outside', 'pinfty', 'moreover', 'we', 'work', 'under', 'a', 'weaker', 'panchishkine', 'type', 'condition', 'on', 'pi_p', 'rather', 'than', 'the', 'full', 'ordinariness', 'condition', 'finally', 'we', 'prove', 'the', 'socalled', 'manin', 'relations', 'between', 'the', 'padic', 'lfunctions', 'at', 'all', 'critical', 'points', 'this', 'has', 'the', 'striking', 'consequence', 'that', 'given', 'a', 'unitary', 'pi', 'whose', 'standard', 'lfunction', 'admits', 'at', 'least', 'two', 'critical', 'points', 'and', 'given', 'a', 'prime', 'p', 'such', 'that', 'pi_p', 'is', 'ordinary', 'the', 'central', 'critical', 'value', 'ltfrac12', 'piotimeschi', 'is', 'nonzero', 'for', 'all', 'except', 'finitely', 'many', 'dirichlet', 'characters', 'chi', 'of', 'ppower', 'conductor']] | [-0.21081114806233475, 0.057279533623123394, -0.15698262081993472, 0.0575359886333793, -0.11072765868865171, -0.14158307372630513, 0.020599096404165247, 0.28057663238536545, -0.261243375693584, -0.1976613270851364, 0.0617355091751918, -0.2713774644132507, -0.1412049486296393, 0.23526384343926887, -0.10204459649744874, 0.032764613787011836, 0.007554888643585799, 0.1604155940561942, -0.10079774130762102, -0.3203651938500286, 0.40587091394710323, -0.03431612893677594, 0.22814071184971876, 0.030841444475693376, 0.0572507068302417, 0.028509308058463516, 0.00991515718313337, -0.10277255554002715, -0.14817750792480985, 0.13634243721757847, 0.3159252813614208, 0.02100329384431025, 0.25994468079362476, -0.37549079823367604, -0.1308761107916086, 0.24482303156996724, 0.12250184233992072, -0.004632949238174666, 0.02442988519764802, -0.2602556178683949, 0.14265292004647404, -0.16287756631319678, -0.15831928375335028, -0.06412368481270751, 0.04877432245878252, 0.005844865048070008, -0.2613164275865566, 0.021536976036381477, 0.11742082176653788, 0.20188398116774725, -0.08910418869600746, -0.1752371008505184, -0.00773877725386393, 0.05436564249678226, 0.0548124602561468, 0.06290190648532619, 0.09255241620632117, -0.10646876978431964, -0.0727211319125252, 0.33201451212636124, -0.04414310610973295, -0.17779593204001062, 0.14903910217360097, -0.19516689258720182, -0.18283799398494394, 0.1179995324342833, 0.06268908843202026, 0.14045663788092286, -0.024554389255252062, 0.16888242137444082, -0.16475496632292083, 0.07837175414420948, 0.11011864101699395, -0.07897084734228314, 0.17038624306013317, 0.033168988002801846, 0.07087735547405008, 0.11012039610970362, -0.009250440523477696, -0.036615016693194884, -0.3832537768604724, -0.17797604774697465, -0.13849398525559742, 0.09165818533691311, -0.09019167944809356, -0.1615166703990677, 0.42691237111820984, 0.12402419106931323, 0.18931702997165117, 0.13439471191013155, 0.2242818839129126, 0.10941241495038943, 0.06787184444705449, 0.06799659865216641, 0.11002355152182826, 0.20164835807044953, -0.01669139399027114, -0.12907538478322633, 0.0008117340025846024, 0.15162870256034167] |
1,802.10065 | Nonasymptotic Gaussian Approximation for Inference with Stable Noise | The results of a series of theoretical studies are reported, examining the
convergence rate for different approximate representations of $\alpha$-stable
distributions. Although they play a key role in modelling random processes with
jumps and discontinuities, the use of $\alpha$-stable distributions in
inference often leads to analytically intractable problems. The LePage series,
which is a probabilistic representation employed in this work, is used to
transform an intractable, infinite-dimensional inference problem into a
conditionally Gaussian parametric problem. A major component of our approach is
the approximation of the tail of this series by a Gaussian random variable.
Standard statistical techniques, such as Expectation-Maximization, Markov chain
Monte Carlo, and Particle Filtering, can then be applied. In addition to the
asymptotic normality of the tail of this series, we establish explicit,
nonasymptotic bounds on the approximation error. Their proofs follow classical
Fourier-analytic arguments, using Ess\'{e}en's smoothing lemma. Specifically,
we consider the distance between the distributions of: $(i)$~the tail of the
series and an appropriate Gaussian; $(ii)$~the full series and the truncated
series; and $(iii)$~the full series and the truncated series with an added
Gaussian term. In all three cases, sharp bounds are established, and the
theoretical results are compared with the actual distances (computed
numerically) in specific examples of symmetric $\alpha$-stable distributions.
This analysis facilitates the selection of appropriate truncations in practice
and offers theoretical guarantees for the accuracy of resulting estimates. One
of the main conclusions obtained is that, for the purposes of inference, the
use of a truncated series together with an approximately Gaussian error term
has superior statistical properties and is likely a preferable choice in
practice.
| math.PR cs.IT math.IT stat.ME | the results of a series of theoretical studies are reported examining the convergence rate for different approximate representations of alphastable distributions although they play a key role in modelling random processes with jumps and discontinuities the use of alphastable distributions in inference often leads to analytically intractable problems the lepage series which is a probabilistic representation employed in this work is used to transform an intractable infinitedimensional inference problem into a conditionally gaussian parametric problem a major component of our approach is the approximation of the tail of this series by a gaussian random variable standard statistical techniques such as expectationmaximization markov chain monte carlo and particle filtering can then be applied in addition to the asymptotic normality of the tail of this series we establish explicit nonasymptotic bounds on the approximation error their proofs follow classical fourieranalytic arguments using esseens smoothing lemma specifically we consider the distance between the distributions of ithe tail of the series and an appropriate gaussian iithe full series and the truncated series and iiithe full series and the truncated series with an added gaussian term in all three cases sharp bounds are established and the theoretical results are compared with the actual distances computed numerically in specific examples of symmetric alphastable distributions this analysis facilitates the selection of appropriate truncations in practice and offers theoretical guarantees for the accuracy of resulting estimates one of the main conclusions obtained is that for the purposes of inference the use of a truncated series together with an approximately gaussian error term has superior statistical properties and is likely a preferable choice in practice | [['the', 'results', 'of', 'a', 'series', 'of', 'theoretical', 'studies', 'are', 'reported', 'examining', 'the', 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1,802.10066 | Reconstruction of partially sampled multi-band images - Application to
STEM-EELS imaging | Electron microscopy has shown to be a very powerful tool to map the chemical
nature of samples at various scales down to atomic resolution. However, many
samples can not be analyzed with an acceptable signal-to-noise ratio because of
the radiation damage induced by the electron beam. This is particularly crucial
for electron energy loss spectroscopy (EELS) which acquires spectral-spatial
data and requires high beam intensity. Since scanning transmission electron
microscopes (STEM) are able to acquire data cubes by scanning the electron
probe over the sample and recording a spectrum for each spatial position, it is
possible to design the scan pattern and to sample only specific pixels. As a
consequence, partial acquisition schemes are now conceivable, provided a
reconstruction of the full data cube is conducted as a post-processing step.
This paper proposes two reconstruction algorithms for multi-band images
acquired by STEM-EELS which exploits the spectral structure and the spatial
smoothness of the image. The performance of the proposed schemes is illustrated
thanks to experiments conducted on a realistic phantom dataset as well as real
EELS spectrum-images.
| eess.IV cond-mat.mtrl-sci cs.CV physics.data-an | electron microscopy has shown to be a very powerful tool to map the chemical nature of samples at various scales down to atomic resolution however many samples can not be analyzed with an acceptable signaltonoise ratio because of the radiation damage induced by the electron beam this is particularly crucial for electron energy loss spectroscopy eels which acquires spectralspatial data and requires high beam intensity since scanning transmission electron microscopes stem are able to acquire data cubes by scanning the electron probe over the sample and recording a spectrum for each spatial position it is possible to design the scan pattern and to sample only specific pixels as a consequence partial acquisition schemes are now conceivable provided a reconstruction of the full data cube is conducted as a postprocessing step this paper proposes two reconstruction algorithms for multiband images acquired by stemeels which exploits the spectral structure and the spatial smoothness of the image the performance of the proposed schemes is illustrated thanks to experiments conducted on a realistic phantom dataset as well as real eels spectrumimages | [['electron', 'microscopy', 'has', 'shown', 'to', 'be', 'a', 'very', 'powerful', 'tool', 'to', 'map', 'the', 'chemical', 'nature', 'of', 'samples', 'at', 'various', 'scales', 'down', 'to', 'atomic', 'resolution', 'however', 'many', 'samples', 'can', 'not', 'be', 'analyzed', 'with', 'an', 'acceptable', 'signaltonoise', 'ratio', 'because', 'of', 'the', 'radiation', 'damage', 'induced', 'by', 'the', 'electron', 'beam', 'this', 'is', 'particularly', 'crucial', 'for', 'electron', 'energy', 'loss', 'spectroscopy', 'eels', 'which', 'acquires', 'spectralspatial', 'data', 'and', 'requires', 'high', 'beam', 'intensity', 'since', 'scanning', 'transmission', 'electron', 'microscopes', 'stem', 'are', 'able', 'to', 'acquire', 'data', 'cubes', 'by', 'scanning', 'the', 'electron', 'probe', 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1,802.10067 | OGLE-2017-BLG-0373Lb: A Jovian Mass-Ratio Planet Exposes A New
Accidental Microlensing Degeneracy | We report the discovery of microlensing planet OGLE-2017-BLG-0373Lb. We show
that while the planet-host system has an unambiguous microlens topology, there
are two geometries within this topology that fit the data equally well, which
leads to a factor 2.5 difference in planet-host mass ratio, i.e., $q=1.5\times
10^{-3}$ vs. $q=0.6\times 10^{-3}$. We show that this is an "accidental
degeneracy" in the sense that it is due to a gap in the data. We dub it "the
caustic-chirality degeneracy". We trace the mathematical origins of this
degeneracy, which should enable similar degenerate solutions to be easily
located in the future. A Bayesian estimate, based on a Galactic model, yields a
host mass $M=0.25^{+0.30}_{-0.15} M_\odot$ at a distance
$D_L=5.9^{+1.3}_{-1.95}$ kpc. The lens-source relative proper motion is
relatively fast, $\mu=9$ mas/yr, which implies that the host mass and distance
can be determined by high-resolution imaging after about 10 years. The same
observations could in principle resolve the discrete degeneracy in $q$, but
this will be more challenging.
| astro-ph.EP | we report the discovery of microlensing planet ogle2017blg0373lb we show that while the planethost system has an unambiguous microlens topology there are two geometries within this topology that fit the data equally well which leads to a factor 25 difference in planethost mass ratio ie q15times 103 vs q06times 103 we show that this is an accidental degeneracy in the sense that it is due to a gap in the data we dub it the causticchirality degeneracy we trace the mathematical origins of this degeneracy which should enable similar degenerate solutions to be easily located in the future a bayesian estimate based on a galactic model yields a host mass m025030_015 m_odot at a distance d_l5913_195 kpc the lenssource relative proper motion is relatively fast mu9 masyr which implies that the host mass and distance can be determined by highresolution imaging after about 10 years the same observations could in principle resolve the discrete degeneracy in q but this will be more challenging | [['we', 'report', 'the', 'discovery', 'of', 'microlensing', 'planet', 'ogle2017blg0373lb', 'we', 'show', 'that', 'while', 'the', 'planethost', 'system', 'has', 'an', 'unambiguous', 'microlens', 'topology', 'there', 'are', 'two', 'geometries', 'within', 'this', 'topology', 'that', 'fit', 'the', 'data', 'equally', 'well', 'which', 'leads', 'to', 'a', 'factor', '25', 'difference', 'in', 'planethost', 'mass', 'ratio', 'ie', 'q15times', '103', 'vs', 'q06times', '103', 'we', 'show', 'that', 'this', 'is', 'an', 'accidental', 'degeneracy', 'in', 'the', 'sense', 'that', 'it', 'is', 'due', 'to', 'a', 'gap', 'in', 'the', 'data', 'we', 'dub', 'it', 'the', 'causticchirality', 'degeneracy', 'we', 'trace', 'the', 'mathematical', 'origins', 'of', 'this', 'degeneracy', 'which', 'should', 'enable', 'similar', 'degenerate', 'solutions', 'to', 'be', 'easily', 'located', 'in', 'the', 'future', 'a', 'bayesian', 'estimate', 'based', 'on', 'a', 'galactic', 'model', 'yields', 'a', 'host', 'mass', 'm025030_015', 'm_odot', 'at', 'a', 'distance', 'd_l5913_195', 'kpc', 'the', 'lenssource', 'relative', 'proper', 'motion', 'is', 'relatively', 'fast', 'mu9', 'masyr', 'which', 'implies', 'that', 'the', 'host', 'mass', 'and', 'distance', 'can', 'be', 'determined', 'by', 'highresolution', 'imaging', 'after', 'about', '10', 'years', 'the', 'same', 'observations', 'could', 'in', 'principle', 'resolve', 'the', 'discrete', 'degeneracy', 'in', 'q', 'but', 'this', 'will', 'be', 'more', 'challenging']] | [-0.1273962750498098, 0.10631554010148811, -0.09922242044912985, 0.08572479221859397, -0.08915574406870665, -0.1001309498380392, 0.06501412078311357, 0.3815467376799251, -0.24868117903287595, -0.3683451567089949, 0.09365652039951573, -0.2588319222842797, -0.0822307918894624, 0.18029459534684578, -0.10504673893685834, -0.030919911799570307, 0.110597037963602, -0.016483338548240658, -0.09413516791746354, -0.21022163824034998, 0.2696868233421507, 0.057543809907749675, 0.20777505350251418, 0.04086173469952952, 0.081893899566729, -0.061293561571241856, 0.003022875162199713, 0.012528443697075814, -0.14934924618253903, 0.06989175737954867, 0.231002350381086, 0.12537252120912457, 0.23062153687127507, -0.3200807340669995, -0.16644819787828824, 0.10713566243588829, 0.18161016788918716, 0.0893987109817457, -0.05245996956410892, -0.2660214169553887, 0.08635594213839608, -0.1656280471644818, -0.16791634055344054, -0.011316861865522627, 0.05380018559009887, -0.03477614050326594, -0.23816530809227304, 0.128352609080955, 0.03122830255956498, 0.03546749146726842, -0.06960560765135317, -0.07851579138570322, -0.03388366646891555, 0.08324756761356138, 0.03318429240458406, 0.08427796552244288, 0.09369348107168499, -0.08277409723422562, -0.060955145582108974, 0.4065101003477302, -0.06088801535915058, -0.14682221509130428, 0.19513686388904133, -0.1817294753078992, -0.15008378894820523, 0.12742557569305438, 0.1486725177920352, 0.11532031079061711, -0.17528968503794226, 0.04604573233182936, -0.03667457860249739, 0.23313559299239364, 0.05547331277585517, 0.03471856543089812, 0.3112617478085061, 0.15153057803996864, 0.11408830330504152, 0.050294196230914585, -0.19284554318829367, -0.047969919336864196, -0.24159632297531247, -0.1365141325797408, -0.1541400297465794, 0.09558492415369703, -0.09609402250190704, -0.10539185086217447, 0.3448559320263135, 0.17695455612407293, 0.2585141203808001, 0.02650566221564077, 0.27493256694661117, 0.10033892435976902, 0.12201898496669646, 0.0860564911921616, 0.34672755523859405, 0.11151640388132551, 0.04354749417129474, -0.2053014396582372, 0.05884268723028258, -0.015031183472810647] |
1,802.10068 | Effective Heisenberg model and exchange interaction for strongly
correlated systems | We consider the extended Hubbard model and introduce a corresponding
Heisenberg-like problem written in terms of spin operators. The derived
formalism is reminiscent of Anderson's idea of the effective exchange
interaction and takes into account nonlocal correlation effects. The results
for the exchange interaction and magnetic susceptibility are expressed in terms
of single-particle quantities, which can be obtained efficiently in realistic
calculations of multiband systems. In the strongly spin-polarized limit, when
the local magnetic moment is well-defined, the exchange interaction reduces to
a standard expression of the density functional theory that has been
successfully used in practical calculations of magnetic properties of real
materials.
| cond-mat.str-el | we consider the extended hubbard model and introduce a corresponding heisenberglike problem written in terms of spin operators the derived formalism is reminiscent of andersons idea of the effective exchange interaction and takes into account nonlocal correlation effects the results for the exchange interaction and magnetic susceptibility are expressed in terms of singleparticle quantities which can be obtained efficiently in realistic calculations of multiband systems in the strongly spinpolarized limit when the local magnetic moment is welldefined the exchange interaction reduces to a standard expression of the density functional theory that has been successfully used in practical calculations of magnetic properties of real materials | [['we', 'consider', 'the', 'extended', 'hubbard', 'model', 'and', 'introduce', 'a', 'corresponding', 'heisenberglike', 'problem', 'written', 'in', 'terms', 'of', 'spin', 'operators', 'the', 'derived', 'formalism', 'is', 'reminiscent', 'of', 'andersons', 'idea', 'of', 'the', 'effective', 'exchange', 'interaction', 'and', 'takes', 'into', 'account', 'nonlocal', 'correlation', 'effects', 'the', 'results', 'for', 'the', 'exchange', 'interaction', 'and', 'magnetic', 'susceptibility', 'are', 'expressed', 'in', 'terms', 'of', 'singleparticle', 'quantities', 'which', 'can', 'be', 'obtained', 'efficiently', 'in', 'realistic', 'calculations', 'of', 'multiband', 'systems', 'in', 'the', 'strongly', 'spinpolarized', 'limit', 'when', 'the', 'local', 'magnetic', 'moment', 'is', 'welldefined', 'the', 'exchange', 'interaction', 'reduces', 'to', 'a', 'standard', 'expression', 'of', 'the', 'density', 'functional', 'theory', 'that', 'has', 'been', 'successfully', 'used', 'in', 'practical', 'calculations', 'of', 'magnetic', 'properties', 'of', 'real', 'materials']] | [-0.16182320706026915, 0.13891191920153617, -0.0722414891844472, 0.13272959538601123, -0.022293165968641497, -0.08235228647334644, 0.00031212415230514196, 0.3170887998556002, -0.26401217886282563, -0.30646608165429473, 0.0005460064802229261, -0.2851937271368045, -0.16276203719406532, 0.17181379692136453, 0.059820310109688975, -0.003198617536467142, 0.007979779231111305, 0.030315556590302058, -0.11121118821588774, -0.20405747805936977, 0.29740166746062013, -0.007701129428684139, 0.2830355655616866, 0.11930660713607302, 0.059174726269422814, 0.0912301208367213, 0.04157240545968167, 0.07881135039944918, -0.09286101316495031, 0.12829368210581238, 0.22134820503672997, -0.005648644983571453, 0.21395451551339087, -0.48753093408707243, -0.23402988506243744, 0.03848650340492336, 0.15097954018990725, 0.13113000771465103, -0.0073478599638642315, -0.28809289363786006, 0.019729609912386738, -0.22386466985335574, -0.12832061917959856, -0.1403627052473334, -0.008853284570460137, 0.02548742786390134, -0.31636433522754276, 0.12768012092783465, 0.03308708134304302, 0.04220432346077219, -0.11867479120309536, -0.11078199143342388, -0.030126126321892325, 0.12332599908208627, 0.035890655500294924, 0.0291671078840199, 0.11920646342780226, -0.12899410882024454, -0.08934669489826774, 0.3975775496622261, -0.0892471987933207, -0.1982992492602744, 0.1342218461594222, -0.13900670603974363, -0.10258034202986611, 0.1011897721193516, 0.14049705631959325, 0.0909835286035489, -0.20289074664875584, 0.1642503546592287, -0.018926765179807823, 0.13188063405910866, -0.044360849992909394, 0.06350226462550032, 0.19980573063367046, 0.12365716987327548, 0.00129798161259924, 0.15993658293043084, -0.06686041519815962, -0.14525275014322966, -0.2585351068813067, -0.12302736549662978, -0.2178171607083641, 0.03819422127876001, -0.08557961893208042, -0.172820643580053, 0.4084195664170413, 0.18197139777475968, 0.14598668695320016, -0.02763400097151484, 0.26131774776597294, 0.2150839765717347, 0.09925372312472273, 0.011543130721502867, 0.2371145772586505, 0.19341972675129698, 0.06999423697841568, -0.2570052552036941, 0.07809762091962441, 0.08073744937428273] |
1,802.10069 | Observation of a room-temperature oscillator's motion dominated by
quantum fluctuations over a broad audio-frequency band | We report on the broadband measurement of quantum radiation pressure noise
(QRPN) in an optomechanical cavity at room temperature over a broad range of
frequencies relevant to gravitational-wave detectors. We show that QRPN drives
the motion of a high-reflectivity single-crystal microresonator, which serves
as one mirror of a Fabry-Perot cavity. In our measurements QRPN dominates over
all other noise between 10 kHz and 50 kHz and scales as expected with the
circulating power inside the cavity. The thermal noise of the microresonator,
the largest noise source next to the QRPN, is measured and shown to agree with
a structural damping model from 200 Hz to 30 kHz. By observing the effects of
QRPN in the audio-band, we now have a testbed for studying techniques to
mitigate back-action, such as variational readout and squeezed light injection,
that could be used to improve the sensitivity of gravitational-wave detectors.
| quant-ph | we report on the broadband measurement of quantum radiation pressure noise qrpn in an optomechanical cavity at room temperature over a broad range of frequencies relevant to gravitationalwave detectors we show that qrpn drives the motion of a highreflectivity singlecrystal microresonator which serves as one mirror of a fabryperot cavity in our measurements qrpn dominates over all other noise between 10 khz and 50 khz and scales as expected with the circulating power inside the cavity the thermal noise of the microresonator the largest noise source next to the qrpn is measured and shown to agree with a structural damping model from 200 hz to 30 khz by observing the effects of qrpn in the audioband we now have a testbed for studying techniques to mitigate backaction such as variational readout and squeezed light injection that could be used to improve the sensitivity of gravitationalwave detectors | [['we', 'report', 'on', 'the', 'broadband', 'measurement', 'of', 'quantum', 'radiation', 'pressure', 'noise', 'qrpn', 'in', 'an', 'optomechanical', 'cavity', 'at', 'room', 'temperature', 'over', 'a', 'broad', 'range', 'of', 'frequencies', 'relevant', 'to', 'gravitationalwave', 'detectors', 'we', 'show', 'that', 'qrpn', 'drives', 'the', 'motion', 'of', 'a', 'highreflectivity', 'singlecrystal', 'microresonator', 'which', 'serves', 'as', 'one', 'mirror', 'of', 'a', 'fabryperot', 'cavity', 'in', 'our', 'measurements', 'qrpn', 'dominates', 'over', 'all', 'other', 'noise', 'between', '10', 'khz', 'and', '50', 'khz', 'and', 'scales', 'as', 'expected', 'with', 'the', 'circulating', 'power', 'inside', 'the', 'cavity', 'the', 'thermal', 'noise', 'of', 'the', 'microresonator', 'the', 'largest', 'noise', 'source', 'next', 'to', 'the', 'qrpn', 'is', 'measured', 'and', 'shown', 'to', 'agree', 'with', 'a', 'structural', 'damping', 'model', 'from', '200', 'hz', 'to', '30', 'khz', 'by', 'observing', 'the', 'effects', 'of', 'qrpn', 'in', 'the', 'audioband', 'we', 'now', 'have', 'a', 'testbed', 'for', 'studying', 'techniques', 'to', 'mitigate', 'backaction', 'such', 'as', 'variational', 'readout', 'and', 'squeezed', 'light', 'injection', 'that', 'could', 'be', 'used', 'to', 'improve', 'the', 'sensitivity', 'of', 'gravitationalwave', 'detectors']] | [-0.11266105225204477, 0.18495569449990162, -0.0308893883683757, -0.03215146299103938, -0.04256027885425632, -0.12898899207835737, 0.03562712240788754, 0.3841715839321483, -0.24162563904226847, -0.33066435548642725, 0.08670915973537015, -0.30527662696980246, -0.05347240206862047, 0.3093767393083784, -0.037232140414034054, 0.06797150956446461, 0.037543373475049, 0.0007639069537542862, -0.01156712431549924, -0.1441064282816401, 0.23706595362674393, 0.12223143641731689, 0.2692961945542938, 0.031194269274399705, 0.15259007232627284, -0.06149795865448677, 0.02629898408466108, -0.04120039458311648, -0.10993054151195755, 0.020375633277381733, 0.2696170061571549, 0.04863055936724254, 0.24095523900237598, -0.3926181719408766, -0.21726531969711874, 0.07641564051250685, 0.10305295388329111, 0.13065075709991641, -0.024538144033102394, -0.2951273373774674, 0.064112332158352, -0.19784270757681702, -0.10078115804656727, -0.03128326906701422, -0.02648111047822829, 0.017572958759121494, -0.24614398249533437, 0.056562268908760725, 0.0353467646708763, 0.03186599647447671, -0.062079401266576135, -0.07796283537675053, 0.03100467793570117, 0.0769015271168789, -0.023707107069091998, 0.03121024507340299, 0.223105575481098, -0.1153697550459446, -0.11957123521268878, 0.33636553095628136, -0.15596452066419672, -0.08614022896484766, 0.16173368270033717, -0.20054922247471366, -0.020600352630861206, 0.14601606819523524, 0.1822167344404104, 0.05565398255656537, -0.14040178896887992, -0.016841898629224975, 0.0734402176904913, 0.2662377437044012, 0.13937529308836244, 0.12779012946284388, 0.227631524559238, 0.21081263658651214, 0.051088384657217926, 0.16523125826433774, -0.1949973615430206, 0.008585877037186124, -0.28374163754211024, -0.09314859363135614, -0.1647102003414758, 0.09182230097382035, -0.0813399090201192, -0.12519935360365733, 0.3927811746013491, 0.18755175056867301, 0.14866051331723798, -0.010092202841132011, 0.342154120566317, 0.09739920816285383, 0.10893568270106174, 0.011846608766163252, 0.34721512362529994, 0.1611247727940854, 0.09896623823083682, -0.2607504872578094, -0.02621267017372565, -0.09189042568921227] |
1,802.1007 | Variation and rigidity of quasi-local mass | Inspired by the work of Chen-Zhang \cite{Chen-Zhang}, we derive an evolution
formula for the Wang-Yau quasi-local energy in reference to a static space,
introduced by Chen-Wang-Wang-Yau \cite{CWWY}. If the reference static space
represents a mass minimizing, static extension of the initial surface $\Sigma$,
we observe that the derivative of the Wang-Yau quasi-local energy is equal to
the derivative of the Bartnik quasi-local mass at $\Sigma$.
Combining the evolution formula for the quasi-local energy with a localized
Penrose inequality proved in \cite{Lu-Miao}, we prove a rigidity theorem for
compact $3$-manifolds with nonnegative scalar curvature, with boundary. This
rigidity theorem in turn gives a characterization of the equality case of the
localized Penrose inequality in $3$-dimension.
| math.DG gr-qc | inspired by the work of chenzhang citechenzhang we derive an evolution formula for the wangyau quasilocal energy in reference to a static space introduced by chenwangwangyau citecwwy if the reference static space represents a mass minimizing static extension of the initial surface sigma we observe that the derivative of the wangyau quasilocal energy is equal to the derivative of the bartnik quasilocal mass at sigma combining the evolution formula for the quasilocal energy with a localized penrose inequality proved in citelumiao we prove a rigidity theorem for compact 3manifolds with nonnegative scalar curvature with boundary this rigidity theorem in turn gives a characterization of the equality case of the localized penrose inequality in 3dimension | [['inspired', 'by', 'the', 'work', 'of', 'chenzhang', 'citechenzhang', 'we', 'derive', 'an', 'evolution', 'formula', 'for', 'the', 'wangyau', 'quasilocal', 'energy', 'in', 'reference', 'to', 'a', 'static', 'space', 'introduced', 'by', 'chenwangwangyau', 'citecwwy', 'if', 'the', 'reference', 'static', 'space', 'represents', 'a', 'mass', 'minimizing', 'static', 'extension', 'of', 'the', 'initial', 'surface', 'sigma', 'we', 'observe', 'that', 'the', 'derivative', 'of', 'the', 'wangyau', 'quasilocal', 'energy', 'is', 'equal', 'to', 'the', 'derivative', 'of', 'the', 'bartnik', 'quasilocal', 'mass', 'at', 'sigma', 'combining', 'the', 'evolution', 'formula', 'for', 'the', 'quasilocal', 'energy', 'with', 'a', 'localized', 'penrose', 'inequality', 'proved', 'in', 'citelumiao', 'we', 'prove', 'a', 'rigidity', 'theorem', 'for', 'compact', '3manifolds', 'with', 'nonnegative', 'scalar', 'curvature', 'with', 'boundary', 'this', 'rigidity', 'theorem', 'in', 'turn', 'gives', 'a', 'characterization', 'of', 'the', 'equality', 'case', 'of', 'the', 'localized', 'penrose', 'inequality', 'in', '3dimension']] | [-0.17141958712301122, 0.10744127374125854, -0.11201615824466657, 0.11600142420021765, -0.06164181853618917, -0.1080185082963232, -0.000600952550409994, 0.258799730791548, -0.20925425866473502, -0.28548715113226425, 0.060168558539429665, -0.25418785835804264, -0.08424972041633937, 0.15571572290895797, -0.08278828467789251, 0.03432991658978232, 0.018988329092672934, 0.0942718299755126, -0.13791620731140153, -0.18655635071747484, 0.398655800473526, 0.04003571877854133, 0.22407642440067246, 0.12427274260772478, 0.12150381005651087, 0.06188038684248309, -0.014861949386263113, 0.018180823491335155, -0.23208467872769822, 0.14587752758781639, 0.19352070910326385, 0.07963697786374581, 0.23502170898601277, -0.3436992753280002, -0.21149012128557634, 0.1466766961790416, 0.05617223779559819, 0.0659810656792732, -0.04709147203312076, -0.280138091925412, 0.08509210215394444, -0.15170093637745863, -0.23227253534036493, -0.034224860199274273, 0.05159887392928294, -0.029894410410400377, -0.2451286822506184, 0.16871298541989896, 0.11190260939060821, 0.009674737836584586, -0.2005302778898029, -0.06266763094180358, -0.06229285803119387, 0.041552787240799686, 0.063462901140623, 0.0571552906270831, 0.10327164108924773, -0.03352451434576833, -0.08230458492725028, 0.30456560771963603, -0.10218613431575375, -0.2904908596922498, 0.08324011841600915, -0.14171757558659745, -0.14199431389655678, 0.07708958108703699, 0.10706636788101372, 0.15528776162568855, -0.1691151800503476, 0.17482936072992075, -0.03091471678034804, 0.09258029226709259, 0.15830642340380116, 0.02311246449537917, 0.20531677130028742, 0.10855926610016768, 0.15808095953025675, 0.19614590408383023, -0.02857749670564513, -0.102912451226025, -0.37870934658572764, -0.22195643440760468, -0.2339374603737795, 0.14462467130068518, -0.14038754822344546, -0.19280778134771442, 0.3546748094072719, 0.03778631816011503, 0.16643981959397366, 0.12824261881445254, 0.2281603500815194, 0.13957371946142286, 0.05114721672805966, 0.10369260245592359, 0.23878769832876845, 0.18244171915404978, 0.12144436460167785, -0.1731309317983687, -0.04662997681228871, 0.17516020296671247] |
1,802.10071 | Asymptotic representation theory and the spectrum of a random geometric
graph on a compact Lie group | Let $G$ be a compact Lie group, $N\geq 1$ and $L>0$. The random geometric
graph on $G$ is the random graph $\Gamma(N,L)$ whose vertices are $N$ random
points $g_1,\ldots,g_N$ chosen under the Haar measure of $G$, and whose edges
are the pairs $\{g_i,g_j\}$ with $d(g_i,g_j)\leq L$, $d$ being the distance
associated to the standard Riemannian structure on $G$. In this paper, we
describe the asymptotic behavior of the spectrum of the adjacency matrix of
$\Gamma(N,L)$, when $N$ goes to infinity. If $L$ is fixed and $N \to + \infty$
(Gaussian regime), then the largest eigenvalues of $\Gamma(N,L)$ converge after
an appropriate renormalisation towards certain explicit linear combinations of
values of Bessel functions. If $L = O(N^{-\frac{1}{\dim G}})$ and $N \to
+\infty$ (Poissonian regime), then the random geometric graph $\Gamma(N,L)$
converges in the local Benjamini-Schramm sense, which implies the weak
convergence in probability of the spectral measure of $\Gamma(N,L)$. In both
situations, the representation theory of the group $G$ provides us with
informations on the limit of the spectrum, and conversely, the computation of
this limiting spectrum involves many classical tools from representation
theory: Weyl's character formula and the weight lattice in the Gaussian regime,
and a degeneration of these objects in the Poissonian regime. The
representation theoretic approach allows one to understand precisely how the
degeneration from the Gaussian to the Poissonian regime occurs, and the article
is written so as to highlight this degeneration phenomenon. In the Poissonian
regime, this approach leads us to an algebraic conjecture on certain
functionals of the irreducible representations of $G$.
| math.PR | let g be a compact lie group ngeq 1 and l0 the random geometric graph on g is the random graph gammanl whose vertices are n random points g_1ldotsg_n chosen under the haar measure of g and whose edges are the pairs g_ig_j with dg_ig_jleq l d being the distance associated to the standard riemannian structure on g in this paper we describe the asymptotic behavior of the spectrum of the adjacency matrix of gammanl when n goes to infinity if l is fixed and n to infty gaussian regime then the largest eigenvalues of gammanl converge after an appropriate renormalisation towards certain explicit linear combinations of values of bessel functions if l onfrac1dim g and n to infty poissonian regime then the random geometric graph gammanl converges in the local benjaminischramm sense which implies the weak convergence in probability of the spectral measure of gammanl in both situations the representation theory of the group g provides us with informations on the limit of the spectrum and conversely the computation of this limiting spectrum involves many classical tools from representation theory weyls character formula and the weight lattice in the gaussian regime and a degeneration of these objects in the poissonian regime the representation theoretic approach allows one to understand precisely how the degeneration from the gaussian to the poissonian regime occurs and the article is written so as to highlight this degeneration phenomenon in the poissonian regime this approach leads us to an algebraic conjecture on certain functionals of the irreducible representations of g | [['let', 'g', 'be', 'a', 'compact', 'lie', 'group', 'ngeq', '1', 'and', 'l0', 'the', 'random', 'geometric', 'graph', 'on', 'g', 'is', 'the', 'random', 'graph', 'gammanl', 'whose', 'vertices', 'are', 'n', 'random', 'points', 'g_1ldotsg_n', 'chosen', 'under', 'the', 'haar', 'measure', 'of', 'g', 'and', 'whose', 'edges', 'are', 'the', 'pairs', 'g_ig_j', 'with', 'dg_ig_jleq', 'l', 'd', 'being', 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1,802.10072 | Strong Nonlinear Coupling due to Induced Photon Interaction on a
Si$_{3}$N$_{4}$ Chip | Second-order optical processes lead to a host of applications in classical
and quantum optics. With the enhancement of parametric interactions that arise
due to light confinement, on-chip implementations promise very-large-scale
photonic integration. But as yet there is no route to a device that acts at the
single photon level. Here we exploit the $\chi^{(3)}$ nonlinear response of a
Si$_{3}$N$_{4}$ microring resonator to induce a large effective $\chi^{(2)}$.
Effective second-order upconversion (ESUP) of a seed to an idler can be
achieved with 74,000 %/W efficiency, indicating that single photon nonlinearity
is within reach of current technology. Moreover, we show a nonlinear coupling
rate of seed and idler larger than the energy dissipation rate in the
resonator, indicating a strong coupling regime. Consequently we observe a
Rabi-like splitting, for which we provide a detailed theoretical description.
This yields new insight into the dynamics of ultrastrong effective nonlinear
interactions in microresonators, and access to novel phenomena and applications
in classical and quantum nonlinear optics.
| physics.optics quant-ph | secondorder optical processes lead to a host of applications in classical and quantum optics with the enhancement of parametric interactions that arise due to light confinement onchip implementations promise verylargescale photonic integration but as yet there is no route to a device that acts at the single photon level here we exploit the chi3 nonlinear response of a si_3n_4 microring resonator to induce a large effective chi2 effective secondorder upconversion esup of a seed to an idler can be achieved with 74000 w efficiency indicating that single photon nonlinearity is within reach of current technology moreover we show a nonlinear coupling rate of seed and idler larger than the energy dissipation rate in the resonator indicating a strong coupling regime consequently we observe a rabilike splitting for which we provide a detailed theoretical description this yields new insight into the dynamics of ultrastrong effective nonlinear interactions in microresonators and access to novel phenomena and applications in classical and quantum nonlinear optics | [['secondorder', 'optical', 'processes', 'lead', 'to', 'a', 'host', 'of', 'applications', 'in', 'classical', 'and', 'quantum', 'optics', 'with', 'the', 'enhancement', 'of', 'parametric', 'interactions', 'that', 'arise', 'due', 'to', 'light', 'confinement', 'onchip', 'implementations', 'promise', 'verylargescale', 'photonic', 'integration', 'but', 'as', 'yet', 'there', 'is', 'no', 'route', 'to', 'a', 'device', 'that', 'acts', 'at', 'the', 'single', 'photon', 'level', 'here', 'we', 'exploit', 'the', 'chi3', 'nonlinear', 'response', 'of', 'a', 'si_3n_4', 'microring', 'resonator', 'to', 'induce', 'a', 'large', 'effective', 'chi2', 'effective', 'secondorder', 'upconversion', 'esup', 'of', 'a', 'seed', 'to', 'an', 'idler', 'can', 'be', 'achieved', 'with', '74000', 'w', 'efficiency', 'indicating', 'that', 'single', 'photon', 'nonlinearity', 'is', 'within', 'reach', 'of', 'current', 'technology', 'moreover', 'we', 'show', 'a', 'nonlinear', 'coupling', 'rate', 'of', 'seed', 'and', 'idler', 'larger', 'than', 'the', 'energy', 'dissipation', 'rate', 'in', 'the', 'resonator', 'indicating', 'a', 'strong', 'coupling', 'regime', 'consequently', 'we', 'observe', 'a', 'rabilike', 'splitting', 'for', 'which', 'we', 'provide', 'a', 'detailed', 'theoretical', 'description', 'this', 'yields', 'new', 'insight', 'into', 'the', 'dynamics', 'of', 'ultrastrong', 'effective', 'nonlinear', 'interactions', 'in', 'microresonators', 'and', 'access', 'to', 'novel', 'phenomena', 'and', 'applications', 'in', 'classical', 'and', 'quantum', 'nonlinear', 'optics']] | [-0.14318421923235292, 0.15112546561804266, -0.06226046450683498, 0.007832904812676133, -0.08576085329259513, -0.18867769116186536, 0.06302029876824236, 0.4124221504083835, -0.2546100646519335, -0.2901947943493724, 0.006370848418737296, -0.2597378160251537, -0.14846451213234105, 0.2714511167490855, 0.006376198057478177, 0.05149819412035868, 0.043600147461984304, -0.03651651386298908, -0.019589794422790872, -0.15330270815102268, 0.2228272762731649, 0.05658350220473949, 0.32494332977512386, 0.08734207374654943, 0.1432720807722035, -0.016031805203238037, 0.06384487520845142, -0.030686850764323027, -0.09322542671866359, 0.11469481309177354, 0.26032055351970484, 0.005457847291836515, 0.2999433591845445, -0.41974602652771864, -0.23641467586712678, 0.06877566055045463, 0.14828905647154897, 0.1768379007895419, -0.10590568270417862, -0.2413668164110277, 0.03934413664392196, -0.1572186413104646, -0.1091679251549067, -0.07923341699861339, -0.02039968922326807, 0.0029017057764576747, -0.31900254695501645, 0.06207716896624334, 0.07450011771652498, 0.018630325360572898, 0.020545089759980328, -0.000633902625850169, -0.001044208710663952, 0.046995472151320425, -0.0693970699881902, 0.005869416625682788, 0.1489244203272392, -0.18776758001113195, -0.13249178793266764, 0.3904328180822631, -0.1071114604322247, -0.14287621977127857, 0.17644963324419222, -0.13301513710466678, -0.04320862398890313, 0.16609114380553364, 0.22335312236100435, 0.06729465200187405, -0.12071372856444214, 0.04304093869827739, 0.052256580430548635, 0.242978268218576, 0.08133614491234767, 0.17923552549546, 0.2215402207832085, 0.20377100204350426, 0.048182571766665204, 0.1437752001627814, -0.046835870711947794, -0.0828824509313563, -0.28449653084971943, -0.14231523995113093, -0.14265121367352548, 0.10898874221884398, -0.0830888028717709, -0.14512765505642164, 0.3883216775779147, 0.14496911358364742, 0.16334798490570393, -0.02346620342505048, 0.2998850730298727, 0.18475370195592405, 0.10716296694881748, 0.009804112519486808, 0.3558817811863264, 0.15562807164969855, 0.08894930250462493, -0.26396703197460736, -0.02496662238627323, -0.025167319789579777] |
1,802.10073 | On Coded Caching with Heterogeneous Distortion Requirements | This paper considers heterogeneous coded caching where the users have unequal
distortion requirements. The server is connected to the users via an error-free
multicast link and designs the users' cache sizes subject to a total memory
budget. In particular, in the placement phase, the server jointly designs the
users' cache sizes and the cache contents. To serve the users' requests, in the
delivery phase, the server transmits signals that satisfy the users' distortion
requirements. An optimization problem with the objective of minimizing the
worst-case delivery load subject to the total cache memory budget and users'
distortion requirements is formulated. The optimal solution for uncoded
placement and linear delivery is characterized explicitly and is shown to
exhibit a threshold policy with respect to the total cache memory budget. As a
byproduct of the study, a caching scheme for systems with fixed cache sizes
that outperforms the state-of-art is presented.
| cs.IT math.IT | this paper considers heterogeneous coded caching where the users have unequal distortion requirements the server is connected to the users via an errorfree multicast link and designs the users cache sizes subject to a total memory budget in particular in the placement phase the server jointly designs the users cache sizes and the cache contents to serve the users requests in the delivery phase the server transmits signals that satisfy the users distortion requirements an optimization problem with the objective of minimizing the worstcase delivery load subject to the total cache memory budget and users distortion requirements is formulated the optimal solution for uncoded placement and linear delivery is characterized explicitly and is shown to exhibit a threshold policy with respect to the total cache memory budget as a byproduct of the study a caching scheme for systems with fixed cache sizes that outperforms the stateofart is presented | [['this', 'paper', 'considers', 'heterogeneous', 'coded', 'caching', 'where', 'the', 'users', 'have', 'unequal', 'distortion', 'requirements', 'the', 'server', 'is', 'connected', 'to', 'the', 'users', 'via', 'an', 'errorfree', 'multicast', 'link', 'and', 'designs', 'the', 'users', 'cache', 'sizes', 'subject', 'to', 'a', 'total', 'memory', 'budget', 'in', 'particular', 'in', 'the', 'placement', 'phase', 'the', 'server', 'jointly', 'designs', 'the', 'users', 'cache', 'sizes', 'and', 'the', 'cache', 'contents', 'to', 'serve', 'the', 'users', 'requests', 'in', 'the', 'delivery', 'phase', 'the', 'server', 'transmits', 'signals', 'that', 'satisfy', 'the', 'users', 'distortion', 'requirements', 'an', 'optimization', 'problem', 'with', 'the', 'objective', 'of', 'minimizing', 'the', 'worstcase', 'delivery', 'load', 'subject', 'to', 'the', 'total', 'cache', 'memory', 'budget', 'and', 'users', 'distortion', 'requirements', 'is', 'formulated', 'the', 'optimal', 'solution', 'for', 'uncoded', 'placement', 'and', 'linear', 'delivery', 'is', 'characterized', 'explicitly', 'and', 'is', 'shown', 'to', 'exhibit', 'a', 'threshold', 'policy', 'with', 'respect', 'to', 'the', 'total', 'cache', 'memory', 'budget', 'as', 'a', 'byproduct', 'of', 'the', 'study', 'a', 'caching', 'scheme', 'for', 'systems', 'with', 'fixed', 'cache', 'sizes', 'that', 'outperforms', 'the', 'stateofart', 'is', 'presented']] | [-0.27036171977178547, 0.00025037435891037504, 0.008246971118087703, 0.019494782359263784, -0.08716621639276226, -0.24507720713075754, 0.19427843412739929, 0.3977729872724897, -0.27812173094197706, -0.31057882842464635, 0.10412749896735281, -0.2969779191236641, -0.09382445890632635, 0.06715916541430193, -0.19945410065780822, 0.0826845604334832, 0.012094206393551242, 0.057993768248707056, -0.02253358715805351, -0.3746171425162764, 0.26985576740038153, 0.14144017058424652, 0.380609824234066, 0.03276716161997536, 0.052578206312515446, 0.013352230783533054, -0.02334885742763888, -0.010833532030291453, -0.10462552521150084, 0.04999097776473374, 0.3497918947675341, 0.21881953438089505, 0.28460014028776737, -0.4197264501598437, -0.17363063649375093, 0.06087880294354683, 0.10410746709267432, 0.015616469852928375, -0.060978242469876, -0.23837874866896183, 0.1504575961546318, -0.23110413233076246, 0.01799106552592806, 0.0269006973205644, -0.02800369556879977, 0.09851581532652867, -0.36888005993505185, -0.06828001565677491, -0.034182807710651006, -0.044935272975094816, -0.09653735908088149, -0.0849149114754353, 0.02310416504514177, 0.20081917843089211, 0.06229919068219543, 0.007272254972957779, 0.15257328720385763, -0.0936771177897557, -0.11656566486557052, 0.43610800755826906, 0.04726592180747036, -0.24376751060874477, 0.08214601461234428, 0.003591936855652445, -0.10402915474480472, 0.17165401411821712, 0.26050288696156665, 0.045815504750715115, -0.1900044747571637, 0.01111776198416231, -0.040976665139267524, 0.23441661783569567, 0.10164317747930417, 0.14176888572291244, 0.14442474804850094, 0.2288912844551551, 0.21112935275871408, 0.17776102832883495, -0.06528578522438938, -0.12565301019522185, -0.21952064901179746, -0.1368528351791807, -0.22711437993299066, -0.004460354403252839, -0.12700935376041517, -0.07575121893279248, 0.34162530627005205, 0.11226838917748348, 0.12675237153480584, 0.1829945592011476, 0.4172650077757803, 0.10350873203856896, 0.12784447154734987, 0.19870239167436454, 0.08807106076966266, 0.011727049611697628, 0.1981075252658008, -0.2629579165856027, 0.14604274220638783, -0.00141338787884829] |
1,802.10074 | Comment on "The QCD axion beyond the classical level: A lattice study" | We rebut the claim by Nakamura and Schierholz [1] that the mass of a
potential axion needs to be no less than ~230MeV pointing out errors in both
their analytic argument and numerical simulations.
| hep-lat | we rebut the claim by nakamura and schierholz 1 that the mass of a potential axion needs to be no less than 230mev pointing out errors in both their analytic argument and numerical simulations | [['we', 'rebut', 'the', 'claim', 'by', 'nakamura', 'and', 'schierholz', '1', 'that', 'the', 'mass', 'of', 'a', 'potential', 'axion', 'needs', 'to', 'be', 'no', 'less', 'than', '230mev', 'pointing', 'out', 'errors', 'in', 'both', 'their', 'analytic', 'argument', 'and', 'numerical', 'simulations']] | [-0.1141691120397864, 0.0910268948046547, -0.11549250246731169, 0.1320939866092169, -0.08046551756419693, -0.11113755791589167, 0.13229833678765732, 0.3772216843384685, -0.12288145766113744, -0.34218116815794597, 0.14299740191111623, -0.2761887177599199, -0.12307606135128123, 0.22139580209146847, -0.04468509427864443, 0.0285960648095969, 0.04129289294183819, -0.02776362176871661, -0.08913066096349874, -0.2408102663572539, 0.27574477047010354, 0.10968806727958674, 0.10435806214809418, 0.07015261116127174, 0.007334423731222298, -0.07805818141522733, -0.086934234721191, 0.01109618383149306, -0.13696519667251833, 0.05315249829524846, 0.16072565034934969, 0.0981807436681155, 0.31106865716477233, -0.43075674252979684, -0.16313984324083183, 0.12629535280619608, 0.1424295645715161, 0.09123020376445669, -0.06884410822143157, -0.27398806447022117, 0.14601431238098125, -0.18987752824570192, -0.14716010824353856, -0.07886756409072515, 0.055715623424586025, -0.012224489258545818, -0.25042976599863986, 0.0574638033850175, 0.05757813131662481, 0.03539435173187292, -0.046660510202248894, -0.12825560839282293, -0.037046894706277686, 0.035582460085579165, 0.11343567793003538, 0.08731690345501358, 0.1165567656386305, -0.10048795672077121, -0.09948674260610432, 0.3845423658688863, -0.01682942659306608, -0.23913805234725727, 0.1649521189022132, -0.16084425765879903, -0.08668737548093002, 0.1271542641598816, 0.06226536419919946, 0.09566668710304481, -0.10598731227219105, 0.05487914059917922, -0.0037056620543201766, 0.20794686587583838, 0.09037387845191089, -0.05351575592243479, 0.21085179540695567, 0.09127569974710543, 0.02051385926703612, 0.016050833640761222, -0.04843854912641374, -0.10803757823128818, -0.3015579956047463, -0.14149844285213586, -0.1536592926096284, 0.07685132591392506, -0.09839706019777099, -0.05406457168812102, 0.3168751423557599, 0.2190734243415522, 0.15889463584101055, 0.06716741370319416, 0.3055127382729993, 0.08953771747959156, 0.04940279877293065, 0.07179374290122227, 0.30239784345030785, 0.11835306657788654, 0.0883897507393902, -0.18832741248788257, -0.014643212441693653, -0.005019770991621595] |
1,802.10075 | Symmetric functions and the principal case of the Frankl-F\"uredi
conjecture | Let $r\geq3$ and $G$ be an $r$-uniform hypergraph with vertex set $\left\{
1,\ldots,n\right\} $ and edge set $E$. Let \[ \mu\left( G\right) :=\max
{\textstyle\sum\limits_{\left\{ i_{1},\ldots,i_{r}\right\} \in E}}
x_{i_{1}}\cdots x_{i_{r}}, \] where the maximum is taken over all nonnegative
$x_{1},\ldots,x_{n}$ with $x_{1}+\cdots+x_{n}=1.$
Let $t\geq r-1$ be the unique real number such that $\left\vert E\right\vert
=\binom{t}{r}$. It is shown that if $r\leq5$ or $t\geq4\left( r-1\right) \left(
r-2\right) $, then \[ \mu\left( G\right) \leq t^{-r}\binom{t}{r}% \] with
equality holding if and only if $t$ is an integer.
The proof is based on some new bounds on elementary symmetric functions.
| math.CO | let rgeq3 and g be an runiform hypergraph with vertex set left 1ldotsnright and edge set e let muleft gright max textstylesumlimits_left i_1ldotsi_rright in e x_i_1cdots x_i_r where the maximum is taken over all nonnegative x_1ldotsx_n with x_1cdotsx_n1 let tgeq r1 be the unique real number such that leftvert erightvert binomtr it is shown that if rleq5 or tgeq4left r1right left r2right then muleft gright leq trbinomtr with equality holding if and only if t is an integer the proof is based on some new bounds on elementary symmetric functions | [['let', 'rgeq3', 'and', 'g', 'be', 'an', 'runiform', 'hypergraph', 'with', 'vertex', 'set', 'left', '1ldotsnright', 'and', 'edge', 'set', 'e', 'let', 'muleft', 'gright', 'max', 'textstylesumlimits_left', 'i_1ldotsi_rright', 'in', 'e', 'x_i_1cdots', 'x_i_r', 'where', 'the', 'maximum', 'is', 'taken', 'over', 'all', 'nonnegative', 'x_1ldotsx_n', 'with', 'x_1cdotsx_n1', 'let', 'tgeq', 'r1', 'be', 'the', 'unique', 'real', 'number', 'such', 'that', 'leftvert', 'erightvert', 'binomtr', 'it', 'is', 'shown', 'that', 'if', 'rleq5', 'or', 'tgeq4left', 'r1right', 'left', 'r2right', 'then', 'muleft', 'gright', 'leq', 'trbinomtr', 'with', 'equality', 'holding', 'if', 'and', 'only', 'if', 't', 'is', 'an', 'integer', 'the', 'proof', 'is', 'based', 'on', 'some', 'new', 'bounds', 'on', 'elementary', 'symmetric', 'functions']] | [-0.1438248520478584, 0.19330409029253243, -0.042944793870107335, -0.060988996536975884, -0.09995427228025082, -0.2574122939034399, -0.05011994734473796, 0.32521077635956097, -0.31115662786795434, -0.21140252036345472, 0.10537064356900505, -0.39635859604880036, -0.059791276995120685, 0.15701051489225623, -0.08722322778383562, -0.039939453415797056, 0.01532114025609321, 0.1609117144225053, 0.03082992160603045, -0.2643040777913418, 0.25154669028328147, -0.11612484122749912, 0.1012422213645046, 0.12112207804015468, 0.09839092109195259, 0.057990636822419714, 0.10027823280206466, 0.03161644489302423, -0.2109146786649243, -0.0027460473763520816, 0.2390288315315069, 0.2005925723856472, 0.28452667567026185, -0.359595753173961, -0.06831889966480344, 0.29573473233325653, 0.14503906125690877, -0.15814652630543136, 0.03591393456367933, -0.2694363327001233, 0.2305448545361813, -0.1136463739942894, -0.05138095850910408, -0.021056319230673724, 0.19046785056882773, 0.005454295268562813, -0.3975261736840728, -0.021902913861649942, 0.08983814518292804, 0.022126762797082606, 0.03704501193084092, -0.25653816179473354, -0.10029822372528444, 0.012845873448391816, -0.07684314110686621, 0.14784485334530473, -0.007152332587683776, -0.0163356613547328, -0.06984085936929627, 0.33233661255069885, -0.04814507022425701, -0.20637253474399267, 0.02421845296812973, -0.20190579097448702, -0.1231818502005863, 0.0334779085838292, 0.055294485890351415, 0.18245862107948366, -0.03860561104865846, 0.24123383615045327, -0.16427068036899575, 0.14471213742164918, 0.11145619112235236, 0.00799322062654488, 0.1271918364744409, 0.057098713623505666, 0.17121859774952866, 0.07254473448461707, 0.027621484844081372, 0.10646859113777797, -0.352864530790283, -0.10218547794025347, -0.24414391579044736, 0.20417670582151826, -0.14527978567937416, -0.12790372173676368, 0.3017410147957594, 0.062134874852778146, 0.16882749172264194, 0.14097489635403976, 0.1923756469321628, 0.11163533410283243, -0.00695947628378509, 0.21430860946785255, 0.007839860430012557, 0.18826309505692987, -0.08611773226988019, -0.15190238983606, 0.04949199156386845, 0.13839418324922403] |
1,802.10076 | Mitigation of multipacting in 113 MHz superconducting RF photo-injector | Superconducting RF (SRF) photo-injectors are one of the most promising
devices for generating continuous wave (CW) electron beams with record high
brightness. Ultra-high vacuum of SRF guns provides for long lifetime of the
high quantum efficiency (QE) photocathodes, while SRF technology provides for
high accelerating gradients exceeding 10 MV/m. It is especially true for low
frequency SRF guns where electrons are generated at photocathodes at the crest
of accelerating voltage. Two main physics challenges of SRF guns are their
compatibility with high QE photocathodes and multipacting. The first is related
to a possibility of deposition of photocathode materials (such as Cs) on the
walls of the SRF cavity, which can result in increased dark current via
reduction of the bulk Nb work function and in enhancing of a secondary electron
emission yield (SEY). SEY plays critical role in multipacting, which could both
spoil the gun vacuum and speed up the deposition of the cathode material on the
walls of the SRF cavity. In short, the multipactor behavior in superconducting
accelerating units must be well understood for successful operation of an SRF
photo-injector. In this paper we present our studies of 1.2 MV 113 MHz
quarter-wave SRF photo-injector serving as a source of electron beam for the
Coherent electron Cooling experiment (CeC) at BNL. During three years of
operating our SRF gun we encountered a number of multipacting zones. We also
observed that presence of $\textrm{CsK}_{2}\textrm{Sb}$ photocathode in the gun
could create additional multipacting barriers. We had conducted a comprehensive
numerical and experimental study of the multipactor discharge in our SRF gun,
and had developed a process of crossing the multipacting barriers from zero to
the operational voltage without affecting the lifetime of our photocathode and
enhancing the strength of multipacting barriers.
| physics.acc-ph | superconducting rf srf photoinjectors are one of the most promising devices for generating continuous wave cw electron beams with record high brightness ultrahigh vacuum of srf guns provides for long lifetime of the high quantum efficiency qe photocathodes while srf technology provides for high accelerating gradients exceeding 10 mvm it is especially true for low frequency srf guns where electrons are generated at photocathodes at the crest of accelerating voltage two main physics challenges of srf guns are their compatibility with high qe photocathodes and multipacting the first is related to a possibility of deposition of photocathode materials such as cs on the walls of the srf cavity which can result in increased dark current via reduction of the bulk nb work function and in enhancing of a secondary electron emission yield sey sey plays critical role in multipacting which could both spoil the gun vacuum and speed up the deposition of the cathode material on the walls of the srf cavity in short the multipactor behavior in superconducting accelerating units must be well understood for successful operation of an srf photoinjector in this paper we present our studies of 12 mv 113 mhz quarterwave srf photoinjector serving as a source of electron beam for the coherent electron cooling experiment cec at bnl during three years of operating our srf gun we encountered a number of multipacting zones we also observed that presence of textrmcsk_2textrmsb photocathode in the gun could create additional multipacting barriers we had conducted a comprehensive numerical and experimental study of the multipactor discharge in our srf gun and had developed a process of crossing the multipacting barriers from zero to the operational voltage without affecting the lifetime of our photocathode and enhancing the strength of multipacting barriers | [['superconducting', 'rf', 'srf', 'photoinjectors', 'are', 'one', 'of', 'the', 'most', 'promising', 'devices', 'for', 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1,802.10077 | A Differential Privacy Mechanism Design Under Matrix-Valued Query | Traditionally, differential privacy mechanism design has been tailored for a
scalar-valued query function. Although many mechanisms such as the Laplace and
Gaussian mechanisms can be extended to a matrix-valued query function by adding
i.i.d. noise to each element of the matrix, this method is often sub-optimal as
it forfeits an opportunity to exploit the structural characteristics typically
associated with matrix analysis. In this work, we consider the design of
differential privacy mechanism specifically for a matrix-valued query function.
The proposed solution is to utilize a matrix-variate noise, as opposed to the
traditional scalar-valued noise. Particularly, we propose a novel differential
privacy mechanism called the Matrix-Variate Gaussian (MVG) mechanism, which
adds a matrix-valued noise drawn from a matrix-variate Gaussian distribution.
We prove that the MVG mechanism preserves $(\epsilon,\delta)$-differential
privacy, and show that it allows the structural characteristics of the
matrix-valued query function to naturally be exploited. Furthermore, due to the
multi-dimensional nature of the MVG mechanism and the matrix-valued query, we
introduce the concept of directional noise, which can be utilized to mitigate
the impact the noise has on the utility of the query. Finally, we demonstrate
the performance of the MVG mechanism and the advantages of directional noise
using three matrix-valued queries on three privacy-sensitive datasets. We find
that the MVG mechanism notably outperforms four previous state-of-the-art
approaches, and provides comparable utility to the non-private baseline. Our
work thus presents a promising prospect for both future research and
implementation of differential privacy for matrix-valued query functions.
| cs.LG cs.CR | traditionally differential privacy mechanism design has been tailored for a scalarvalued query function although many mechanisms such as the laplace and gaussian mechanisms can be extended to a matrixvalued query function by adding iid noise to each element of the matrix this method is often suboptimal as it forfeits an opportunity to exploit the structural characteristics typically associated with matrix analysis in this work we consider the design of differential privacy mechanism specifically for a matrixvalued query function the proposed solution is to utilize a matrixvariate noise as opposed to the traditional scalarvalued noise particularly we propose a novel differential privacy mechanism called the matrixvariate gaussian mvg mechanism which adds a matrixvalued noise drawn from a matrixvariate gaussian distribution we prove that the mvg mechanism preserves epsilondeltadifferential privacy and show that it allows the structural characteristics of the matrixvalued query function to naturally be exploited furthermore due to the multidimensional nature of the mvg mechanism and the matrixvalued query we introduce the concept of directional noise which can be utilized to mitigate the impact the noise has on the utility of the query finally we demonstrate the performance of the mvg mechanism and the advantages of directional noise using three matrixvalued queries on three privacysensitive datasets we find that the mvg mechanism notably outperforms four previous stateoftheart approaches and provides comparable utility to the nonprivate baseline our work thus presents a promising prospect for both future research and implementation of differential privacy for matrixvalued query functions | [['traditionally', 'differential', 'privacy', 'mechanism', 'design', 'has', 'been', 'tailored', 'for', 'a', 'scalarvalued', 'query', 'function', 'although', 'many', 'mechanisms', 'such', 'as', 'the', 'laplace', 'and', 'gaussian', 'mechanisms', 'can', 'be', 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1,802.10078 | A Fast Deep Learning Model for Textual Relevance in Biomedical
Information Retrieval | Publications in the life sciences are characterized by a large technical
vocabulary, with many lexical and semantic variations for expressing the same
concept. Towards addressing the problem of relevance in biomedical literature
search, we introduce a deep learning model for the relevance of a document's
text to a keyword style query. Limited by a relatively small amount of training
data, the model uses pre-trained word embeddings. With these, the model first
computes a variable-length Delta matrix between the query and document,
representing a difference between the two texts, which is then passed through a
deep convolution stage followed by a deep feed-forward network to compute a
relevance score. This results in a fast model suitable for use in an online
search engine. The model is robust and outperforms comparable state-of-the-art
deep learning approaches.
| cs.IR cs.CL | publications in the life sciences are characterized by a large technical vocabulary with many lexical and semantic variations for expressing the same concept towards addressing the problem of relevance in biomedical literature search we introduce a deep learning model for the relevance of a documents text to a keyword style query limited by a relatively small amount of training data the model uses pretrained word embeddings with these the model first computes a variablelength delta matrix between the query and document representing a difference between the two texts which is then passed through a deep convolution stage followed by a deep feedforward network to compute a relevance score this results in a fast model suitable for use in an online search engine the model is robust and outperforms comparable stateoftheart deep learning approaches | [['publications', 'in', 'the', 'life', 'sciences', 'are', 'characterized', 'by', 'a', 'large', 'technical', 'vocabulary', 'with', 'many', 'lexical', 'and', 'semantic', 'variations', 'for', 'expressing', 'the', 'same', 'concept', 'towards', 'addressing', 'the', 'problem', 'of', 'relevance', 'in', 'biomedical', 'literature', 'search', 'we', 'introduce', 'a', 'deep', 'learning', 'model', 'for', 'the', 'relevance', 'of', 'a', 'documents', 'text', 'to', 'a', 'keyword', 'style', 'query', 'limited', 'by', 'a', 'relatively', 'small', 'amount', 'of', 'training', 'data', 'the', 'model', 'uses', 'pretrained', 'word', 'embeddings', 'with', 'these', 'the', 'model', 'first', 'computes', 'a', 'variablelength', 'delta', 'matrix', 'between', 'the', 'query', 'and', 'document', 'representing', 'a', 'difference', 'between', 'the', 'two', 'texts', 'which', 'is', 'then', 'passed', 'through', 'a', 'deep', 'convolution', 'stage', 'followed', 'by', 'a', 'deep', 'feedforward', 'network', 'to', 'compute', 'a', 'relevance', 'score', 'this', 'results', 'in', 'a', 'fast', 'model', 'suitable', 'for', 'use', 'in', 'an', 'online', 'search', 'engine', 'the', 'model', 'is', 'robust', 'and', 'outperforms', 'comparable', 'stateoftheart', 'deep', 'learning', 'approaches']] | [-0.03586512510104567, 0.030924675318423862, -0.034454310499744394, 0.10318680599601449, -0.1455876290924231, -0.1483207495876105, 0.0908706897372534, 0.4219572613842057, -0.31311946891640363, -0.3283039826437607, 0.04636967047012614, -0.2915037260635903, -0.1566844418560876, 0.19507526925806992, -0.09663402381886413, 0.05735450758619752, 0.13781854002631472, 0.07505737617611885, -0.06778191494330049, -0.25030472405303855, 0.29692013259921085, 0.03941151952717621, 0.3334011497690265, 0.005518224426454171, 0.14635554690673752, -0.043735202431636755, -0.0964441340393912, -0.019633857723276475, -0.04432999094443998, 0.2010635984720158, 0.35425917851857675, 0.22885376110995062, 0.3763603942566796, -0.37846525818725724, -0.20649889049197273, 0.08301173448142476, 0.11730143794600845, 0.1261615537297807, -0.06710176967448533, -0.3373096093213312, 0.0752195182476977, -0.19288475458384177, 0.060939461204636475, -0.09679208301214319, 0.03787017330051141, 0.006294875609674456, -0.2741421471398912, 0.017588169324470868, 0.0908581962584889, 0.07775843583915691, -0.04274939413749634, -0.09922023517380756, 0.07044785937182325, 0.14028127660582723, 0.021843409084336816, 0.0845750364355911, 0.10082124330583063, -0.22104303430786876, -0.1447631344041626, 0.3718092345485562, -0.10704994993634466, -0.19715818980554664, 0.15788394396886565, 0.008140037961906396, -0.152841528516991, 0.08483997150674406, 0.21762891712771812, 0.11181088670724093, -0.18552839916717626, 0.04178030462979332, -0.0447755283991197, 0.21130009627326818, 0.06469164723250315, -0.03034649147210937, 0.2060074515402653, 0.30865860384489807, -0.02286192749957799, 0.15900192621051984, -0.09829659221161689, -0.07378716591598564, -0.23601446454098127, -0.1265417675284627, -0.21862205576249644, -0.06599859976475793, -0.13373757617977444, -0.17610611369539247, 0.40936948941614393, 0.20604452219462596, 0.23143973471806908, 0.11518663318418107, 0.3167106861710772, 0.017518698922542267, 0.11517262150694553, 0.09553647897017181, 0.14590380068770364, 0.02113390173868073, 0.17745915605315477, -0.12446793338329412, 0.11882934719149052, 0.10037278208909627] |
1,802.10079 | On the role of working memory in trading-off skills and situation
awareness in Sudoku | Working memory accounts for the ability of humans to perform cognitive
processing, by handling both the representation of information (the mental
picture forming the situation awareness) and the space required for processing
these information (skill processing). The more complex the skills are, the more
processing space they require, the less space becomes available for storage of
information. This interplay between situation awareness and skills is critical
in many applications. Theoretically, it is less understood in cognition and
neuroscience. In the meantime, and practically, it is vital when analysing the
mental processes involved in safety-critical domains.
In this paper, we use the Sudoku game as a vehicle to study this trade-off.
This game combines two features that are present during a user interaction with
a software in many safety critical domains: scanning for information and
processing of information. We use a society of agents for investigating how
this trade-off influences player's proficiency.
| cs.HC | working memory accounts for the ability of humans to perform cognitive processing by handling both the representation of information the mental picture forming the situation awareness and the space required for processing these information skill processing the more complex the skills are the more processing space they require the less space becomes available for storage of information this interplay between situation awareness and skills is critical in many applications theoretically it is less understood in cognition and neuroscience in the meantime and practically it is vital when analysing the mental processes involved in safetycritical domains in this paper we use the sudoku game as a vehicle to study this tradeoff this game combines two features that are present during a user interaction with a software in many safety critical domains scanning for information and processing of information we use a society of agents for investigating how this tradeoff influences players proficiency | [['working', 'memory', 'accounts', 'for', 'the', 'ability', 'of', 'humans', 'to', 'perform', 'cognitive', 'processing', 'by', 'handling', 'both', 'the', 'representation', 'of', 'information', 'the', 'mental', 'picture', 'forming', 'the', 'situation', 'awareness', 'and', 'the', 'space', 'required', 'for', 'processing', 'these', 'information', 'skill', 'processing', 'the', 'more', 'complex', 'the', 'skills', 'are', 'the', 'more', 'processing', 'space', 'they', 'require', 'the', 'less', 'space', 'becomes', 'available', 'for', 'storage', 'of', 'information', 'this', 'interplay', 'between', 'situation', 'awareness', 'and', 'skills', 'is', 'critical', 'in', 'many', 'applications', 'theoretically', 'it', 'is', 'less', 'understood', 'in', 'cognition', 'and', 'neuroscience', 'in', 'the', 'meantime', 'and', 'practically', 'it', 'is', 'vital', 'when', 'analysing', 'the', 'mental', 'processes', 'involved', 'in', 'safetycritical', 'domains', 'in', 'this', 'paper', 'we', 'use', 'the', 'sudoku', 'game', 'as', 'a', 'vehicle', 'to', 'study', 'this', 'tradeoff', 'this', 'game', 'combines', 'two', 'features', 'that', 'are', 'present', 'during', 'a', 'user', 'interaction', 'with', 'a', 'software', 'in', 'many', 'safety', 'critical', 'domains', 'scanning', 'for', 'information', 'and', 'processing', 'of', 'information', 'we', 'use', 'a', 'society', 'of', 'agents', 'for', 'investigating', 'how', 'this', 'tradeoff', 'influences', 'players', 'proficiency']] | [-0.12187794673669812, 0.09536308711487183, -0.08083448681166235, 0.11933662427052708, -0.12427491175368527, -0.16343644562960657, 0.050060941867795555, 0.41331059046533725, -0.27194201493549425, -0.3406620453549734, 0.10791526340481683, -0.2671768383565513, -0.2185313869946149, 0.18602655804831694, -0.14434021671876213, 0.03462180287410684, 0.06850294297135479, 0.06253784537833455, -0.007888120760222194, -0.24775553379972645, 0.30238403428950356, 0.036248102562119626, 0.2938918112684658, 0.047962030996445144, 0.05635786910436505, 0.03582595745780018, -0.027522247244560757, -0.04238447958093895, -0.08305486041108272, 0.19056691948497137, 0.3896612130072344, 0.2418999509293808, 0.39645043775032196, -0.4554213954394819, -0.2328909064846619, 0.10292474014548869, 0.15127732785455636, 0.07923481905746539, -0.029532622195362415, -0.2834795025201971, 0.024407961378059048, -0.15206504585714825, -0.029186939034265596, -0.1083748705654493, 0.02622534776228289, -0.047829260485283784, -0.23725873043772994, -0.009343398921500077, 0.048020287479564244, 0.13867281884300392, -0.020556063719698234, -0.035668225224987166, 0.013812739602505963, 0.24705990748298787, 0.015767768258228898, -0.0023936181420164296, 0.15799113181388832, -0.23261869219378475, -0.12578509752299413, 0.41620108463018146, 0.06565433834519065, -0.2192928594789955, 0.20918557732766926, -0.11633480987850799, -0.15599476252466637, 0.07163472106334882, 0.1856553688150405, 0.05489578095745813, -0.18159137572370398, 0.03752225537943216, 0.04353856628402969, 0.18494212684577752, 0.05736921157761915, 0.0707809269452924, 0.18124106225699482, 0.25691708234841903, 0.08021373539432168, 0.10903214940119732, -0.020596820040797163, -0.14565156528800233, -0.23616955131415698, -0.19037436541333325, -0.16381066999651048, -0.020591778825623113, -0.07729360582227958, -0.09342435318729933, 0.3535441093313329, 0.20338498151534243, 0.13451420602547498, 0.04232860247189, 0.35541550388917426, 0.042193578962477184, 0.04777889117823655, 0.09295252366114827, 0.1471668392726658, 0.048126426175397065, 0.22792626494566434, -0.20149083964569828, 0.1357747327076851, -0.052813435119071] |
1,802.1008 | Simulation of live-cell imaging system reveals hidden uncertainties in
cooperative binding measurements | We propose a computational method to quantitatively evaluate the systematic
uncertainties that arise from undetectable sources in biological measurements
using live-cell imaging techniques. We then demonstrate this method in
measuring biological cooperativity of molecular binding networks: in
particular, ligand molecules binding to cell surface receptor proteins. Our
results show how the non-statistical uncertainties lead to invalid
identification of the measured cooperativity. Through this computational
scheme, the biological interpretation can be more objectively evaluated and
understood under a specific experimental configuration of interest.
| q-bio.QM | we propose a computational method to quantitatively evaluate the systematic uncertainties that arise from undetectable sources in biological measurements using livecell imaging techniques we then demonstrate this method in measuring biological cooperativity of molecular binding networks in particular ligand molecules binding to cell surface receptor proteins our results show how the nonstatistical uncertainties lead to invalid identification of the measured cooperativity through this computational scheme the biological interpretation can be more objectively evaluated and understood under a specific experimental configuration of interest | [['we', 'propose', 'a', 'computational', 'method', 'to', 'quantitatively', 'evaluate', 'the', 'systematic', 'uncertainties', 'that', 'arise', 'from', 'undetectable', 'sources', 'in', 'biological', 'measurements', 'using', 'livecell', 'imaging', 'techniques', 'we', 'then', 'demonstrate', 'this', 'method', 'in', 'measuring', 'biological', 'cooperativity', 'of', 'molecular', 'binding', 'networks', 'in', 'particular', 'ligand', 'molecules', 'binding', 'to', 'cell', 'surface', 'receptor', 'proteins', 'our', 'results', 'show', 'how', 'the', 'nonstatistical', 'uncertainties', 'lead', 'to', 'invalid', 'identification', 'of', 'the', 'measured', 'cooperativity', 'through', 'this', 'computational', 'scheme', 'the', 'biological', 'interpretation', 'can', 'be', 'more', 'objectively', 'evaluated', 'and', 'understood', 'under', 'a', 'specific', 'experimental', 'configuration', 'of', 'interest']] | [-0.052862034723015004, 0.10281236504954172, -0.056977081407861015, 0.08712496800155084, -0.010514009522455858, -0.13597395278019375, 0.10902679464836582, 0.42888124397581034, -0.26911514023568756, -0.3044704420878211, -0.03340455319408736, -0.22896285709447978, -0.2450709886133398, 0.2152184773195342, -0.09281491590436639, 0.040397573836011495, 0.13711364011893548, -0.02718426387121038, 0.023794512170730385, -0.19072491310610687, 0.21682763222332407, 0.0734275355480793, 0.29895125617977325, 0.13488693757581796, 0.08806779315104572, -0.07095238793550468, -0.012344034749264942, 0.048253025723303235, -0.17026764235969294, 0.2115667639385409, 0.32515286352973793, 0.1684943824813406, 0.25830922435923687, -0.4398228064997167, -0.27818276528723357, 0.09583036110895436, 0.16795948474872402, 0.1816202001873313, -0.04241068242490434, -0.284418354742229, 0.050518448681786385, -0.13982141841339266, -0.08819407651700624, -0.15922781479226925, -0.04454863862497959, 0.04245471015072814, -0.21621474946803618, 0.13613395363365005, -0.04330457748118334, 0.10909433700371443, -0.09296014286554986, -0.11330351075611828, 0.006703630268641907, 0.13622813050567015, 0.04496561956915596, -0.004031933861125897, 0.28961977515960247, -0.0982388053677668, -0.13637702450406078, 0.3898678979859119, -0.021773199343531415, -0.24856265187944945, 0.20280490933758458, -0.12500261678928282, -0.19798698502865325, 0.15519043576631059, 0.16552657224010767, 0.10549594449140585, -0.19237928135638557, -0.021137309772467878, 0.0391080346662642, 0.2343554820825641, 0.07179728545611952, 0.04069156296801094, 0.13275352225457204, 0.21867474202185916, -0.01435335954969249, 0.14363864878555987, -0.1451928719037735, -0.06893683944987815, -0.22780136950314045, -0.11657072148263091, -0.17541383059195628, 0.05893619403118131, -0.06129900096875201, -0.1218084302189953, 0.3295965563697459, 0.21782970440126076, 0.17357443154948513, 0.03475342605762729, 0.30136554524665926, 0.010809803523532138, 0.07538780391716011, -0.057682460866777634, 0.22499015029639052, 0.09984053335175282, 0.06854736590871542, -0.30150460798389894, 0.12023716553386937, -0.028555146378760294] |
1,802.10081 | Observation of the topological edge state in X-ray band | The possibility of obtaining robust edge state of light by mimicking the
topological properties of solid state system, have brought a profound impact on
optical sciences. With the advent of high-brilliance, accelerator-driven light
sources such as storage rings or X-ray lasers, it has become attractive to
extend the concept of optical topological manipulation to the X-ray regime. In
this paper, we theoretically proposed and experimentally demonstrated the
topological edge state at the interface of two photonic crystals having
different band-gap topological characteristics for X-ray. Remarkably, this
topologically protected edge state is immune to the weak disorder in form of
the thickness disorder and strong disorder in form of the positional disorder
of layers in the structure, as long as the zero-average-effective-mass
condition is satisfied. Our investigation therefore brings the topological
characteristics to the X-ray regime, provides new theoretical tools to study
X-ray optics and may pave way to exploit some important potential applications,
such as the high efficiency band filter in X-ray band.
| physics.app-ph physics.acc-ph physics.optics | the possibility of obtaining robust edge state of light by mimicking the topological properties of solid state system have brought a profound impact on optical sciences with the advent of highbrilliance acceleratordriven light sources such as storage rings or xray lasers it has become attractive to extend the concept of optical topological manipulation to the xray regime in this paper we theoretically proposed and experimentally demonstrated the topological edge state at the interface of two photonic crystals having different bandgap topological characteristics for xray remarkably this topologically protected edge state is immune to the weak disorder in form of the thickness disorder and strong disorder in form of the positional disorder of layers in the structure as long as the zeroaverageeffectivemass condition is satisfied our investigation therefore brings the topological characteristics to the xray regime provides new theoretical tools to study xray optics and may pave way to exploit some important potential applications such as the high efficiency band filter in xray band | [['the', 'possibility', 'of', 'obtaining', 'robust', 'edge', 'state', 'of', 'light', 'by', 'mimicking', 'the', 'topological', 'properties', 'of', 'solid', 'state', 'system', 'have', 'brought', 'a', 'profound', 'impact', 'on', 'optical', 'sciences', 'with', 'the', 'advent', 'of', 'highbrilliance', 'acceleratordriven', 'light', 'sources', 'such', 'as', 'storage', 'rings', 'or', 'xray', 'lasers', 'it', 'has', 'become', 'attractive', 'to', 'extend', 'the', 'concept', 'of', 'optical', 'topological', 'manipulation', 'to', 'the', 'xray', 'regime', 'in', 'this', 'paper', 'we', 'theoretically', 'proposed', 'and', 'experimentally', 'demonstrated', 'the', 'topological', 'edge', 'state', 'at', 'the', 'interface', 'of', 'two', 'photonic', 'crystals', 'having', 'different', 'bandgap', 'topological', 'characteristics', 'for', 'xray', 'remarkably', 'this', 'topologically', 'protected', 'edge', 'state', 'is', 'immune', 'to', 'the', 'weak', 'disorder', 'in', 'form', 'of', 'the', 'thickness', 'disorder', 'and', 'strong', 'disorder', 'in', 'form', 'of', 'the', 'positional', 'disorder', 'of', 'layers', 'in', 'the', 'structure', 'as', 'long', 'as', 'the', 'zeroaverageeffectivemass', 'condition', 'is', 'satisfied', 'our', 'investigation', 'therefore', 'brings', 'the', 'topological', 'characteristics', 'to', 'the', 'xray', 'regime', 'provides', 'new', 'theoretical', 'tools', 'to', 'study', 'xray', 'optics', 'and', 'may', 'pave', 'way', 'to', 'exploit', 'some', 'important', 'potential', 'applications', 'such', 'as', 'the', 'high', 'efficiency', 'band', 'filter', 'in', 'xray', 'band']] | [-0.14721973213355666, 0.15933246067926335, -0.08245214500556482, 0.036624277389987754, -0.07930308858645552, -0.15707837297857083, 0.07313278406846946, 0.4200893506769919, -0.2891567096769534, -0.29534886351407125, 0.0801506125171278, -0.3108912582802414, -0.16012620763640484, 0.21537375605785875, -0.01733065554642199, 0.10223557009867588, 0.009243925858036052, -0.0634521751328268, -0.040249011347093334, -0.18563194826452267, 0.29842431627121974, 0.051763574420302, 0.3308147475594816, 0.10186265129595995, 0.04235907272366738, 0.02494351070282268, 0.04189286329697266, 0.013357557025795549, -0.09824231445191452, 0.1067404376923532, 0.263819506506861, 0.0009947296427447855, 0.2451627989641655, -0.44723360449719574, -0.26770486436025415, 0.033902146824762044, 0.1247424726276716, 0.10728950433456051, -0.10274295856167252, -0.2981974348011944, 0.08327852372356036, -0.16020690348505237, -0.1775186436544, -0.08851063401038747, 0.016863459235425166, -0.009235347866908543, -0.16924869045104982, 0.025234527945558735, 0.039555423970644675, 0.05147782942987288, -0.0864939476294374, -0.052035614600934, -0.046590648253770246, 0.10973273824906138, 0.002764723147265613, 0.0002763711741010164, 0.12011622696436573, -0.18545424205647712, -0.12026270936001782, 0.3817268248049565, -0.01265504922758052, -0.07618227911204743, 0.2151969868724269, -0.14994291466930995, -0.10986262292566674, 0.12775003516839611, 0.14044195184783068, 0.050799806199875876, -0.09825974046346088, 0.05215439641665679, 0.0112217224754945, 0.18259045836964138, 0.042022774924443645, 0.2085497943184304, 0.2613871307744656, 0.20833169693489456, 0.07508551226720432, 0.19527702158486562, -0.12385176285888631, -0.026543613809971483, -0.216594272741565, -0.17355624742282807, -0.19774339936478177, 0.060225817285777056, -0.039025817833640356, -0.20580504282433712, 0.4173482957664003, 0.16128896676754165, 0.1444224228185636, -0.05571927960939062, 0.2810432265877701, 0.10064255264602073, 0.05658554578958838, 0.012227231561907647, 0.2951476623249933, 0.14964818232549054, 0.11461188128206556, -0.22871257879276885, 0.0734340747082491, 0.0009629130334719831] |
1,802.10082 | Hydrostatic equilibrium of stars without electroneutrality constraint | The general solution of hydrostatic equilibrium equations for a two-component
fluid of ions and electrons without a local electroneutrality constraint is
found in the framework of Newtonian gravity theory. In agreement with the
Poincar\'e theorem on analyticity and in the context of Dyson's argument, the
general solution is demonstrated to possess a fixed (essential) singularity in
the gravitational constant $G$ at $ G = 0 $. The regular component of the
general solution can be determined by perturbation theory in $G$ starting from
a locally neutral solution. The non-perturbative component obtained using the
method of Wentzel, Kramers and Brillouin is exponentially small in the inner
layers of the star and grows rapidly in the outward direction. Near the surface
of the star, both components are comparable in magnitude, and their non-linear
interplay determines the properties of an electro- or ionosphere. The stellar
charge varies within the limits of $- 0.1 $ to $150$ C per solar mass. The
properties of electro- and ionospheres are exponentially sensitive to
variations of the fluid densities in the central regions of the star. The
general solutions of two exactly solvable stellar models without a local
electroneutrality constraint are also presented.
| astro-ph.SR gr-qc | the general solution of hydrostatic equilibrium equations for a twocomponent fluid of ions and electrons without a local electroneutrality constraint is found in the framework of newtonian gravity theory in agreement with the poincare theorem on analyticity and in the context of dysons argument the general solution is demonstrated to possess a fixed essential singularity in the gravitational constant g at g 0 the regular component of the general solution can be determined by perturbation theory in g starting from a locally neutral solution the nonperturbative component obtained using the method of wentzel kramers and brillouin is exponentially small in the inner layers of the star and grows rapidly in the outward direction near the surface of the star both components are comparable in magnitude and their nonlinear interplay determines the properties of an electro or ionosphere the stellar charge varies within the limits of 01 to 150 c per solar mass the properties of electro and ionospheres are exponentially sensitive to variations of the fluid densities in the central regions of the star the general solutions of two exactly solvable stellar models without a local electroneutrality constraint are also presented | [['the', 'general', 'solution', 'of', 'hydrostatic', 'equilibrium', 'equations', 'for', 'a', 'twocomponent', 'fluid', 'of', 'ions', 'and', 'electrons', 'without', 'a', 'local', 'electroneutrality', 'constraint', 'is', 'found', 'in', 'the', 'framework', 'of', 'newtonian', 'gravity', 'theory', 'in', 'agreement', 'with', 'the', 'poincare', 'theorem', 'on', 'analyticity', 'and', 'in', 'the', 'context', 'of', 'dysons', 'argument', 'the', 'general', 'solution', 'is', 'demonstrated', 'to', 'possess', 'a', 'fixed', 'essential', 'singularity', 'in', 'the', 'gravitational', 'constant', 'g', 'at', 'g', '0', 'the', 'regular', 'component', 'of', 'the', 'general', 'solution', 'can', 'be', 'determined', 'by', 'perturbation', 'theory', 'in', 'g', 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'local', 'electroneutrality', 'constraint', 'are', 'also', 'presented']] | [-0.1375769329335326, 0.13535194112427096, -0.06749766583052215, 0.05686345617030869, -0.039738042890801246, -0.09385410189404303, 0.012784652129127718, 0.29374997252452123, -0.25890088050640847, -0.3057734851228044, 0.0725393354940272, -0.29587829300246316, -0.06659576144795962, 0.16424391785251338, -0.0032565631764741, 0.031013673186029128, 0.024864603672664205, 0.051508619348245493, -0.08512955117746407, -0.1808712611435693, 0.3112671478256505, 0.029067414052082293, 0.22233038248386994, 0.05333137918136897, 0.08104839313565632, -0.03477893550989964, -0.013169248030077256, 0.036215999634224554, -0.14154051523899455, 0.0818935260664262, 0.2007255241458942, 0.05498287508371457, 0.23856400668435773, -0.4509365249971289, -0.2020640521613803, 0.034690535832098954, 0.14049674245207058, 0.08932766632398795, -0.04242240437196753, -0.245929243174718, 0.08950706311204125, -0.1436657824538921, -0.20631465039347635, 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1,802.10083 | Discovering Key Nodes in a Temporal Social Network | [Background]Discovering key nodes plays a significant role in Social Network
Analysis(SNA). Effective and accurate mining of key nodes promotes more
successful applications in fields like advertisement and recommendation.
[Methods] With focus on the temporal and categorical property of users' actions
- when did they re-tweet or reply a message, as well as their social intimacy
measured by structural embeddings, we designed a more sensitive PageRank-like
algorithm to accommodate the growing and changing social network in the pursue
of mining key nodes. [Results] Compared with our baseline PageRank algorithm,
key nodes selected by our ranking algorithm noticeably perform better in the
SIR disease simulations with SNAP Higgs dataset. [Conclusion] These results
contributed to a better understanding of disseminations of social events over
the network.
| cs.SI physics.soc-ph | backgrounddiscovering key nodes plays a significant role in social network analysissna effective and accurate mining of key nodes promotes more successful applications in fields like advertisement and recommendation methods with focus on the temporal and categorical property of users actions when did they retweet or reply a message as well as their social intimacy measured by structural embeddings we designed a more sensitive pageranklike algorithm to accommodate the growing and changing social network in the pursue of mining key nodes results compared with our baseline pagerank algorithm key nodes selected by our ranking algorithm noticeably perform better in the sir disease simulations with snap higgs dataset conclusion these results contributed to a better understanding of disseminations of social events over the network | [['backgrounddiscovering', 'key', 'nodes', 'plays', 'a', 'significant', 'role', 'in', 'social', 'network', 'analysissna', 'effective', 'and', 'accurate', 'mining', 'of', 'key', 'nodes', 'promotes', 'more', 'successful', 'applications', 'in', 'fields', 'like', 'advertisement', 'and', 'recommendation', 'methods', 'with', 'focus', 'on', 'the', 'temporal', 'and', 'categorical', 'property', 'of', 'users', 'actions', 'when', 'did', 'they', 'retweet', 'or', 'reply', 'a', 'message', 'as', 'well', 'as', 'their', 'social', 'intimacy', 'measured', 'by', 'structural', 'embeddings', 'we', 'designed', 'a', 'more', 'sensitive', 'pageranklike', 'algorithm', 'to', 'accommodate', 'the', 'growing', 'and', 'changing', 'social', 'network', 'in', 'the', 'pursue', 'of', 'mining', 'key', 'nodes', 'results', 'compared', 'with', 'our', 'baseline', 'pagerank', 'algorithm', 'key', 'nodes', 'selected', 'by', 'our', 'ranking', 'algorithm', 'noticeably', 'perform', 'better', 'in', 'the', 'sir', 'disease', 'simulations', 'with', 'snap', 'higgs', 'dataset', 'conclusion', 'these', 'results', 'contributed', 'to', 'a', 'better', 'understanding', 'of', 'disseminations', 'of', 'social', 'events', 'over', 'the', 'network']] | [-0.0771857984965675, 0.018254423931734088, -0.03736614554478716, 0.10460558912849852, -0.1389074353188151, -0.20689435107946522, 0.11174172700476684, 0.42691398649295487, -0.216872186521303, -0.3541721261239478, 0.02613548782630628, -0.3068531502615181, -0.23853129365465783, 0.16014644857926466, -0.08007773225970503, 0.047799210557166266, 0.11102272935618623, 0.10570543907003618, 0.021875141747589342, -0.33340259893413854, 0.320529498148146, 0.13286390199380763, 0.34289118224175785, 0.053610831299530606, 0.055487019667292345, 0.04731204775905534, -0.1313810780127885, 0.009477279859227167, -0.09024714217169069, 0.14899872227556252, 0.3397686009240501, 0.2006864301750765, 0.36252726147248715, -0.42451620922118677, -0.2108853180352755, 0.10791159931476377, 0.1749556277792494, 0.08753735507924516, -0.026406943087100183, -0.3555384078258727, 0.0983148658053339, -0.19151695464354226, -0.025200140263353075, -0.11326493079453206, -0.026733971537411715, 0.04661606900499617, -0.25561738508839565, 0.028669629416950906, 0.03568092242720686, 0.07827929518882092, 0.01552562928218551, -0.11342973683123328, -0.02210131488944538, 0.19968957824758723, 0.08290529288664586, 0.04163759240407121, 0.18391158087805165, -0.17615097462583115, -0.19475172275086441, 0.41360622866689656, -0.032523303329866346, -0.13016593680098779, 0.1692888693230524, -0.02053603375557528, -0.16648953559049287, 0.08167003819859829, 0.27781042368973, 0.07512969385143839, -0.11547080323184711, -0.0588490136276868, -0.0189987062251571, 0.1748847473342316, 0.036372270505531, 0.031141747609015648, 0.15777818870754176, 0.259233648854527, 0.09600472160734377, 0.04203966723563259, -0.032766977463997586, -0.0921970105792607, -0.16550925653036527, -0.1191582456200546, -0.1623506074372147, 0.006949958131265114, -0.19525876928056285, -0.12578775146350013, 0.4297278189949472, 0.19635534048581324, 0.1789898618727046, 0.03105065761869695, 0.2928492730833637, -0.02939294749761329, 0.11247025786100753, 0.10851249936185464, 0.155016166338024, 0.04413470896200605, 0.20011261043612288, -0.1451655256428889, 0.18075275656321094, 0.016061786755903803] |
1,802.10084 | Effect of Cold Hydrogen Plasma on Optical Parameters of an Optical Fiber | Cold plasma of power 13W has been applied on step index plastic optical
fibers. It is used to study the ability for any variations in the optical
parameters that are effective in communication. The effect of plasma on the
optical parameters, such as core index profile, cladding index and the
numerical aperture, has been studied by multiple beam interference fringes. The
interference fringes have been processed using a homemade Matlab written
program to get more accurate measurements. It is found that there is an
increase of 1.5839 in core index, at core-clad interface, with a plasma
exposure time of 150 sec.
| physics.app-ph physics.optics | cold plasma of power 13w has been applied on step index plastic optical fibers it is used to study the ability for any variations in the optical parameters that are effective in communication the effect of plasma on the optical parameters such as core index profile cladding index and the numerical aperture has been studied by multiple beam interference fringes the interference fringes have been processed using a homemade matlab written program to get more accurate measurements it is found that there is an increase of 15839 in core index at coreclad interface with a plasma exposure time of 150 sec | [['cold', 'plasma', 'of', 'power', '13w', 'has', 'been', 'applied', 'on', 'step', 'index', 'plastic', 'optical', 'fibers', 'it', 'is', 'used', 'to', 'study', 'the', 'ability', 'for', 'any', 'variations', 'in', 'the', 'optical', 'parameters', 'that', 'are', 'effective', 'in', 'communication', 'the', 'effect', 'of', 'plasma', 'on', 'the', 'optical', 'parameters', 'such', 'as', 'core', 'index', 'profile', 'cladding', 'index', 'and', 'the', 'numerical', 'aperture', 'has', 'been', 'studied', 'by', 'multiple', 'beam', 'interference', 'fringes', 'the', 'interference', 'fringes', 'have', 'been', 'processed', 'using', 'a', 'homemade', 'matlab', 'written', 'program', 'to', 'get', 'more', 'accurate', 'measurements', 'it', 'is', 'found', 'that', 'there', 'is', 'an', 'increase', 'of', '15839', 'in', 'core', 'index', 'at', 'coreclad', 'interface', 'with', 'a', 'plasma', 'exposure', 'time', 'of', '150', 'sec']] | [-0.11122309567166888, 0.1148587007116999, -0.11658025396084695, 0.005662245905224347, -0.03689487894639523, -0.1546654517226147, -0.021888941432339975, 0.47873250748774016, -0.2142165565870307, -0.34991138541337213, 0.1259844611796334, -0.2758934905357433, -0.08479260012385144, 0.21962994675744663, -0.04259901071870417, 0.09781247878804653, 0.04058402169006641, -0.008464140949225185, 0.008014165694035139, -0.18515617968608636, 0.23063090076726495, 0.10800052196201351, 0.30551236945985244, 0.05875608129332764, 0.07338112047073816, -0.011093335348473054, -0.03582557997750965, 0.035993460255364575, -0.07946572373732877, 0.038734655493324756, 0.25291607774220254, 0.07428414844484492, 0.23469264490172417, -0.43453181431525284, -0.27340342862663247, 0.05181067069108137, 0.14058958688713233, 0.051338818234701954, -0.07277445537652562, -0.22510094030035865, 0.06065783199073389, -0.1562807875052753, -0.11153495221897358, 0.0054769167827084814, 0.07311999898479142, 0.012448155657491751, -0.25915823681185945, 0.02266467571337331, -0.038438713940029796, 0.08238331443921786, 0.016329042119623133, -0.09124790561018568, -0.008925477230940202, 0.11516463289959263, -0.002478308474757906, 0.03974298320268516, 0.17050992232756784, -0.08031262614472646, -0.05251821439073543, 0.3937087919976976, -0.07449322712203169, -0.138099501455071, 0.15163719068478906, -0.12440027069827223, -0.04722722658812247, 0.20101827375515544, 0.17558090379367572, 0.0579627394615061, -0.11571555877236103, 0.017526986697721625, -0.019719579828564416, 0.26065766194252055, 0.1526624895632267, 0.04278501641532086, 0.19754773529829703, 0.18244340502177225, 0.03134013851869362, 0.15051283085286016, -0.13610868490385739, 0.0167362800131392, -0.2137975323847683, -0.13721275616615347, -0.1770945099209473, -0.009495524807146402, -0.06139065669552597, -0.13280001525870627, 0.4044914694803983, 0.09533256039757168, 0.10062527066717546, -0.036398301267939984, 0.3389302660720517, 0.13941546499192942, 0.1155394590459764, 0.04038653041546544, 0.29376353263723276, 0.1653349381245936, 0.14893923376244728, -0.21862548133922796, 0.06266060018573295, -0.011300052948898137] |
1,802.10085 | Relativistic collapse of axion stars | We study the gravitational collapse of an axion field in null coordinates,
assuming spherical symmetry. Compared with previous studies, we use a simpler
numerical scheme which can run, for relevant parameters, in a few minutes or
less on a desktop computer. We use it to accurately determine the domains of
parameter space in which the axion field forms a black hole, an axion star or a
relativistic Bosenova.
| gr-qc astro-ph.CO | we study the gravitational collapse of an axion field in null coordinates assuming spherical symmetry compared with previous studies we use a simpler numerical scheme which can run for relevant parameters in a few minutes or less on a desktop computer we use it to accurately determine the domains of parameter space in which the axion field forms a black hole an axion star or a relativistic bosenova | [['we', 'study', 'the', 'gravitational', 'collapse', 'of', 'an', 'axion', 'field', 'in', 'null', 'coordinates', 'assuming', 'spherical', 'symmetry', 'compared', 'with', 'previous', 'studies', 'we', 'use', 'a', 'simpler', 'numerical', 'scheme', 'which', 'can', 'run', 'for', 'relevant', 'parameters', 'in', 'a', 'few', 'minutes', 'or', 'less', 'on', 'a', 'desktop', 'computer', 'we', 'use', 'it', 'to', 'accurately', 'determine', 'the', 'domains', 'of', 'parameter', 'space', 'in', 'which', 'the', 'axion', 'field', 'forms', 'a', 'black', 'hole', 'an', 'axion', 'star', 'or', 'a', 'relativistic', 'bosenova']] | [-0.14519037574748783, 0.09102686792517917, -0.07984191203928169, 0.11626190059434842, -0.14261995428515709, -0.10172145948608351, 0.023050806854906326, 0.35961763656643386, -0.19554455270168974, -0.3262715647544931, 0.10336566126994405, -0.20267219982548235, -0.09005725814495236, 0.25059645016924204, -0.004211492525749183, 0.029568717746502337, 0.04055742855416611, 0.0674636775511317, -0.12890947862144778, -0.2403588874320335, 0.3154527468689005, 0.06489755120128393, 0.17226208634126713, -0.05298263084841892, 0.05407593121601488, -0.03059904108864858, 0.018798244240529397, 0.008787679273261935, -0.17038419774240432, 0.05819932165596744, 0.15940043459619013, 0.12895587770788766, 0.24660577723646865, -0.47272869840483456, -0.24537070424241178, 0.10126478070228853, 0.14379889575545401, 0.170180810505853, -0.0878114325545646, -0.28459783718811676, 0.04717281119733611, -0.23853735183365643, -0.14144438170992277, -0.04302414643633015, 0.03331077686743811, -0.023368612746708095, -0.2801210556507987, 0.04313094052486122, 0.0005361768143141971, 0.015292641227407491, -0.06967447754269575, -0.030577282393899036, 0.05080628190326559, 0.02833870462799335, 0.08678504841758267, 0.07160908642896067, 0.18538159856004366, -0.14891727087909684, -0.10190823003101875, 0.43663358981447187, -0.0767726538812413, -0.21343402505633147, 0.16911540399579442, -0.16527012338423552, -0.13879293573828524, 0.13415628885302475, 0.17098657262292416, 0.18529838159926892, -0.10190996692707653, 0.08704496422946892, -0.03499189402004156, 0.24220237302977374, 0.08874090793816482, -0.026041753891417208, 0.30539593199158416, 0.17540623450323062, 0.038319497903370685, 0.10448274793623782, -0.08352226626662099, -0.09076882526278496, -0.32107146692407484, -0.15198790968176634, -0.16707911386894173, 0.060647650539655894, -0.10469396292533287, -0.15795393741470487, 0.3505662811753877, 0.13348295782120925, 0.1728833481833777, -0.004596920365549843, 0.28321404612677936, 0.06329130349331535, 0.08782136147184406, 0.09119214340770508, 0.2819709481863195, 0.09289158348624102, 0.12313932650859523, -0.185229382258566, -0.071287158616435, 0.03930791704367627] |
1,802.10086 | Forecasting Solar Energetic Particle Fluence with Multi-Spacecraft
Observations | Forecasting Solar Energetic Particle (SEP) fluence, as integrated over an SEP
event, is an important element when estimating the effect of solar eruptions on
humans and technology in space. Current real-time estimates are based on SEP
measurements at a single location in space. However, the interplanetary
magnetic field corotates with the Sun approximately 13$^\circ$ each day with
respect to Earth, thus in 4 days a near-Earth spacecraft will have changed
their connection about 60$^\circ$ from the original SEP source. We estimate the
effect of the corotation on particle fluence using a simple particle transport
model, and show that ignoring corotation can cause up to an order of magnitude
error in fluence estimations, depending on the interplanetary particle
transport conditions. We compare the model predictions with STEREO observations
of SEP events.
| physics.space-ph astro-ph.SR | forecasting solar energetic particle sep fluence as integrated over an sep event is an important element when estimating the effect of solar eruptions on humans and technology in space current realtime estimates are based on sep measurements at a single location in space however the interplanetary magnetic field corotates with the sun approximately 13circ each day with respect to earth thus in 4 days a nearearth spacecraft will have changed their connection about 60circ from the original sep source we estimate the effect of the corotation on particle fluence using a simple particle transport model and show that ignoring corotation can cause up to an order of magnitude error in fluence estimations depending on the interplanetary particle transport conditions we compare the model predictions with stereo observations of sep events | [['forecasting', 'solar', 'energetic', 'particle', 'sep', 'fluence', 'as', 'integrated', 'over', 'an', 'sep', 'event', 'is', 'an', 'important', 'element', 'when', 'estimating', 'the', 'effect', 'of', 'solar', 'eruptions', 'on', 'humans', 'and', 'technology', 'in', 'space', 'current', 'realtime', 'estimates', 'are', 'based', 'on', 'sep', 'measurements', 'at', 'a', 'single', 'location', 'in', 'space', 'however', 'the', 'interplanetary', 'magnetic', 'field', 'corotates', 'with', 'the', 'sun', 'approximately', '13circ', 'each', 'day', 'with', 'respect', 'to', 'earth', 'thus', 'in', '4', 'days', 'a', 'nearearth', 'spacecraft', 'will', 'have', 'changed', 'their', 'connection', 'about', '60circ', 'from', 'the', 'original', 'sep', 'source', 'we', 'estimate', 'the', 'effect', 'of', 'the', 'corotation', 'on', 'particle', 'fluence', 'using', 'a', 'simple', 'particle', 'transport', 'model', 'and', 'show', 'that', 'ignoring', 'corotation', 'can', 'cause', 'up', 'to', 'an', 'order', 'of', 'magnitude', 'error', 'in', 'fluence', 'estimations', 'depending', 'on', 'the', 'interplanetary', 'particle', 'transport', 'conditions', 'we', 'compare', 'the', 'model', 'predictions', 'with', 'stereo', 'observations', 'of', 'sep', 'events']] | [-0.08481853747820983, 0.21671895359479373, -0.025947778854326597, 0.11042673942507603, -0.037428746395296635, -0.06062049509312671, 0.0030889055118537866, 0.4114127179751029, -0.21204201184356442, -0.4099403522465414, 0.0641020208131522, -0.32708317850931334, -0.07299082408739756, 0.2519531461499775, -0.09536135128627603, 0.028809088110350645, 0.13375032999767708, 0.05210254236052816, -0.08900896732229739, -0.20607714236069183, 0.179117517438359, 0.16409775254030068, 0.17931066449785318, -0.008363828277931763, 0.13540170304477214, -0.007956713176547335, -0.010676772283533444, -0.021653091890038924, -0.12588347494451088, 0.05895877462417747, 0.15291594779297996, 0.09634163693453257, 0.21447732924985197, -0.45719673660619614, -0.22385253187698814, 0.04957410302908661, 0.1327227308629797, 0.005525994056146234, -0.028018241830599994, -0.29638987572308484, 0.025573787653299335, -0.14629227680763088, -0.11562424591527536, 0.09083867983605999, 0.0613375766032662, 0.0458868262420695, -0.2999616606304279, 0.06285768719748236, -0.0030264610424637793, 0.11856049686813584, -0.13991594640179894, -0.0781894954566199, -0.024446028109210042, 0.10561812919533202, 0.11969128432683647, 0.059595121908037424, 0.19882291542509428, -0.09132437817394161, -0.11591630525609407, 0.3713866989486493, -0.03735582746941453, -0.11418882005203229, 0.1705755535960914, -0.2290563348752375, -0.09750774045689747, 0.17589167733497632, 0.224206250687488, 0.06890765856593274, -0.14395358639001363, 0.006963434964955713, -0.006750242442537385, 0.1742095381114408, 0.05963504454456807, -0.0027618687850638076, 0.2552247004726758, 0.16624018591425668, 0.12881756835581304, 0.030050729766774635, -0.2521809512964235, -0.0704486416061767, -0.27560315903706045, -0.14060098631665685, -0.12476028006864139, 0.06763805276176964, -0.13557206455309195, -0.14532091322426613, 0.4046609281239888, 0.25432882426091685, 0.18767770907769982, -0.027802615517822024, 0.29409151966325364, 0.11160649734083564, 0.015264172156681665, 0.11581557015171991, 0.30752022892523273, 0.09929386490705208, 0.16443215939843167, -0.21008441077294546, 0.13638678178764307, 0.06254056959341352] |
1,802.10087 | Spectroscopic abundance analyses of the 3He stars HD 185330 and 3 Cen A | Abundances of 21 elements in two 3He stars HD 185330 and 3 Cen A have been
analysed relative to the well studied sharp-lined B3 V star iota Her. Six
elements (P, Ti, Mn, Fe, Ni, and Br) are over-abundant in these two peculiar
stars, while six elements (C, O, Mg, Al, S, and Cl) are under-abundant.
Absorption lines of the two rarely observed heavy elements Br II and Kr II are
detected in both stars and these elements are both over-abundant. The centroid
wavelengths of the Ca II infrared triplet lines in these stars are red-shifted
relative to those lines in iota Her and the presence of heavy isotopes of Ca
(mass number 44 - 46) in these two stars are confirmed. In spite of these
similarities, there are several remarkable differences in the abundance pattern
between these two stars. N is under-abundant in HD 185330, as in many Hg-Mn
stars, while it is significantly over-abundant in 3 Cen A. P and Ga are both
over-abundant in 3 Cen A, while only P is over-abundant and no trace of
absorption line of Ga II can be found in HD 185330. Large over-abundances of Kr
and Xe are found in both stars, while the abundance ratios Kr / Xe are
significantly different between them (-1.4 dex in HD 185330 and +1.2 dex in 3
Cen A). Some physical explanations are needed to account for these qualitative
differences.
| astro-ph.SR | abundances of 21 elements in two 3he stars hd 185330 and 3 cen a have been analysed relative to the well studied sharplined b3 v star iota her six elements p ti mn fe ni and br are overabundant in these two peculiar stars while six elements c o mg al s and cl are underabundant absorption lines of the two rarely observed heavy elements br ii and kr ii are detected in both stars and these elements are both overabundant the centroid wavelengths of the ca ii infrared triplet lines in these stars are redshifted relative to those lines in iota her and the presence of heavy isotopes of ca mass number 44 46 in these two stars are confirmed in spite of these similarities there are several remarkable differences in the abundance pattern between these two stars n is underabundant in hd 185330 as in many hgmn stars while it is significantly overabundant in 3 cen a p and ga are both overabundant in 3 cen a while only p is overabundant and no trace of absorption line of ga ii can be found in hd 185330 large overabundances of kr and xe are found in both stars while the abundance ratios kr xe are significantly different between them 14 dex in hd 185330 and 12 dex in 3 cen a some physical explanations are needed to account for these qualitative differences | [['abundances', 'of', '21', 'elements', 'in', 'two', '3he', 'stars', 'hd', '185330', 'and', '3', 'cen', 'a', 'have', 'been', 'analysed', 'relative', 'to', 'the', 'well', 'studied', 'sharplined', 'b3', 'v', 'star', 'iota', 'her', 'six', 'elements', 'p', 'ti', 'mn', 'fe', 'ni', 'and', 'br', 'are', 'overabundant', 'in', 'these', 'two', 'peculiar', 'stars', 'while', 'six', 'elements', 'c', 'o', 'mg', 'al', 's', 'and', 'cl', 'are', 'underabundant', 'absorption', 'lines', 'of', 'the', 'two', 'rarely', 'observed', 'heavy', 'elements', 'br', 'ii', 'and', 'kr', 'ii', 'are', 'detected', 'in', 'both', 'stars', 'and', 'these', 'elements', 'are', 'both', 'overabundant', 'the', 'centroid', 'wavelengths', 'of', 'the', 'ca', 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1,802.10088 | A revised lens time delay for JVAS B0218+357 from a reanalysis of VLA
monitoring data | We have reanalysed the 1996/1997 VLA monitoring data of the gravitational
lens system JVAS B0218+357 to produce improved total flux density and
polarization variability curves at 15, 8.4 and 5 GHz. This has been done using
improved calibration techniques, accurate subtraction of the emission from the
Einstein ring and careful correction of various systematic effects, especially
an offset in polarization position angle that is hour-angle dependent. The
variations in total and polarized flux density give the best constraints and we
determine a combined delay estimate of $11.3 \pm 0.2$ d (1$\sigma$). This is
consistent with the $\gamma$-ray value recently derived using the Fermi
Gamma-ray Space Telescope and thus we find no evidence for a positional shift
between the radio and $\gamma$-ray emitting regions. Combined with the
previously published lens model found using LensClean, the new delay gives a
value for the Hubble constant of $H_0 = 72.9 \pm 2.6$ km s$^{-1}$ Mpc$^{-1}$
(1$\sigma$).
| astro-ph.CO astro-ph.IM | we have reanalysed the 19961997 vla monitoring data of the gravitational lens system jvas b0218357 to produce improved total flux density and polarization variability curves at 15 84 and 5 ghz this has been done using improved calibration techniques accurate subtraction of the emission from the einstein ring and careful correction of various systematic effects especially an offset in polarization position angle that is hourangle dependent the variations in total and polarized flux density give the best constraints and we determine a combined delay estimate of 113 pm 02 d 1sigma this is consistent with the gammaray value recently derived using the fermi gammaray space telescope and thus we find no evidence for a positional shift between the radio and gammaray emitting regions combined with the previously published lens model found using lensclean the new delay gives a value for the hubble constant of h_0 729 pm 26 km s1 mpc1 1sigma | [['we', 'have', 'reanalysed', 'the', '19961997', 'vla', 'monitoring', 'data', 'of', 'the', 'gravitational', 'lens', 'system', 'jvas', 'b0218357', 'to', 'produce', 'improved', 'total', 'flux', 'density', 'and', 'polarization', 'variability', 'curves', 'at', '15', '84', 'and', '5', 'ghz', 'this', 'has', 'been', 'done', 'using', 'improved', 'calibration', 'techniques', 'accurate', 'subtraction', 'of', 'the', 'emission', 'from', 'the', 'einstein', 'ring', 'and', 'careful', 'correction', 'of', 'various', 'systematic', 'effects', 'especially', 'an', 'offset', 'in', 'polarization', 'position', 'angle', 'that', 'is', 'hourangle', 'dependent', 'the', 'variations', 'in', 'total', 'and', 'polarized', 'flux', 'density', 'give', 'the', 'best', 'constraints', 'and', 'we', 'determine', 'a', 'combined', 'delay', 'estimate', 'of', '113', 'pm', '02', 'd', '1sigma', 'this', 'is', 'consistent', 'with', 'the', 'gammaray', 'value', 'recently', 'derived', 'using', 'the', 'fermi', 'gammaray', 'space', 'telescope', 'and', 'thus', 'we', 'find', 'no', 'evidence', 'for', 'a', 'positional', 'shift', 'between', 'the', 'radio', 'and', 'gammaray', 'emitting', 'regions', 'combined', 'with', 'the', 'previously', 'published', 'lens', 'model', 'found', 'using', 'lensclean', 'the', 'new', 'delay', 'gives', 'a', 'value', 'for', 'the', 'hubble', 'constant', 'of', 'h_0', '729', 'pm', '26', 'km', 's1', 'mpc1', '1sigma']] | [-0.12292161962948739, 0.07278436803501487, -0.05763243244650463, 0.07671362140138323, -0.07465185598392661, -0.10646028242073953, 0.07151542705483735, 0.419127955759565, -0.1432213544845581, -0.3925065171594421, 0.0742068902341028, -0.28783461899186175, -0.00821634813095443, 0.23345029815876236, -0.02795186943374574, 0.017386156669817864, 0.05835122092316548, -0.07750007117943217, -0.1084501862137889, -0.20226815916597843, 0.22770874778429667, 0.12971925100466858, 0.2413929391341905, 0.018084899131208657, 0.12263292774402847, -0.029854309439348678, -0.11977395028807222, 0.006942826756082165, -0.16990982659030124, 0.08164090307739874, 0.17677152204482505, 0.09281698886770755, 0.15234668753109873, -0.30321151451518136, -0.21201422550715507, 0.10127413626449804, 0.10794183704497604, 0.058985784791099526, -0.0006797613250091672, -0.3242826389397184, 0.01450835487494866, -0.1917672353874271, -0.1575121238270852, 0.05463699399183194, 0.08921767723746597, -0.00323948008629183, -0.2233050889025132, 0.13942962555990865, -0.07932611839923387, 0.10182638734617891, -0.11524841551358501, -0.14989727680416157, -0.01684065336206307, 0.07815917282326458, -0.0014045920758508146, 0.1497571407072246, 0.1101494462027525, -0.06817000601130227, -0.05663697840180248, 0.36726937666690596, -0.13425337185927977, -0.07142461756089082, 0.09617835818324239, -0.18751547897234558, -0.18327635967793565, 0.22945519938754538, 0.13957886314950885, 0.05416097903624177, -0.1465707213524729, 0.03757317818429631, 0.007926157605834306, 0.2876290424664815, 0.07294079238548874, 0.048560512114781886, 0.2325577693929275, 0.09823860737805565, 0.07583934397533691, 0.068390814383359, -0.2834718595445156, 0.02130475054029375, -0.301682727659742, -0.0593212577769494, -0.11296617861526707, 0.10014901685218017, -0.13357220475494008, -0.07437014908219378, 0.3461003471817821, 0.10690080910921097, 0.1962352704256773, 0.06247372892530014, 0.2893906657397747, 0.11120006586502616, 0.06604677832219749, 0.0940918392688036, 0.3784308237869603, 0.14802753729124865, 0.09395096007113656, -0.21977260217730266, 0.024986779730146128, -0.03191784057145317] |
1,802.10089 | Friction Variability in Planar Pushing Data: Anisotropic Friction and
Data-collection Bias | Friction plays a key role in manipulating objects. Most of what we do with
our hands, and most of what robots do with their grippers, is based on the
ability to control frictional forces. This paper aims to better understand the
variability and predictability of planar friction. In particular, we focus on
the analysis of a recent dataset on planar pushing by Yu et al. [1] devised to
create a data-driven footprint of planar friction.
We show in this paper how we can explain a significant fraction of the
observed unconventional phenomena, e.g., stochasticity and multi-modality, by
combining the effects of material non-homogeneity, anisotropy of friction and
biases due to data collection dynamics, hinting that the variability is
explainable but inevitable in practice.
We introduce an anisotropic friction model and conduct simulation experiments
comparing with more standard isotropic friction models. The anisotropic
friction between object and supporting surface results in convergence of
initial condition during the automated data collection. Numerical results
confirm that the anisotropic friction model explains the bias in the dataset
and the apparent stochasticity in the outcome of a push. The fact that the data
collection process itself can originate biases in the collected datasets,
resulting in deterioration of trained models, calls attention to the data
collection dynamics.
| cs.RO physics.data-an | friction plays a key role in manipulating objects most of what we do with our hands and most of what robots do with their grippers is based on the ability to control frictional forces this paper aims to better understand the variability and predictability of planar friction in particular we focus on the analysis of a recent dataset on planar pushing by yu et al 1 devised to create a datadriven footprint of planar friction we show in this paper how we can explain a significant fraction of the observed unconventional phenomena eg stochasticity and multimodality by combining the effects of material nonhomogeneity anisotropy of friction and biases due to data collection dynamics hinting that the variability is explainable but inevitable in practice we introduce an anisotropic friction model and conduct simulation experiments comparing with more standard isotropic friction models the anisotropic friction between object and supporting surface results in convergence of initial condition during the automated data collection numerical results confirm that the anisotropic friction model explains the bias in the dataset and the apparent stochasticity in the outcome of a push the fact that the data collection process itself can originate biases in the collected datasets resulting in deterioration of trained models calls attention to the data collection dynamics | [['friction', 'plays', 'a', 'key', 'role', 'in', 'manipulating', 'objects', 'most', 'of', 'what', 'we', 'do', 'with', 'our', 'hands', 'and', 'most', 'of', 'what', 'robots', 'do', 'with', 'their', 'grippers', 'is', 'based', 'on', 'the', 'ability', 'to', 'control', 'frictional', 'forces', 'this', 'paper', 'aims', 'to', 'better', 'understand', 'the', 'variability', 'and', 'predictability', 'of', 'planar', 'friction', 'in', 'particular', 'we', 'focus', 'on', 'the', 'analysis', 'of', 'a', 'recent', 'dataset', 'on', 'planar', 'pushing', 'by', 'yu', 'et', 'al', '1', 'devised', 'to', 'create', 'a', 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1,802.1009 | BLUES function method in computational physics | We introduce a computational method in physics that goes "beyond linear use
of equation superposition" (BLUES). A BLUES function is defined as a solution
of a nonlinear differential equation (DE) with a delta source that is at the
same time a Green's function for a related linear DE. For an arbitrary source,
the BLUES function can be used to construct an exact solution to the nonlinear
DE with a different, but related source. Alternatively, the BLUES function can
be used to construct an approximate piecewise analytical solution to the
nonlinear DE with an arbitrary source. For this alternative use the related
linear DE need not be known. The method is illustrated in a few examples using
analytical calculations and numerical computations. Areas for further
applications are suggested.
| physics.comp-ph | we introduce a computational method in physics that goes beyond linear use of equation superposition blues a blues function is defined as a solution of a nonlinear differential equation de with a delta source that is at the same time a greens function for a related linear de for an arbitrary source the blues function can be used to construct an exact solution to the nonlinear de with a different but related source alternatively the blues function can be used to construct an approximate piecewise analytical solution to the nonlinear de with an arbitrary source for this alternative use the related linear de need not be known the method is illustrated in a few examples using analytical calculations and numerical computations areas for further applications are suggested | [['we', 'introduce', 'a', 'computational', 'method', 'in', 'physics', 'that', 'goes', 'beyond', 'linear', 'use', 'of', 'equation', 'superposition', 'blues', 'a', 'blues', 'function', 'is', 'defined', 'as', 'a', 'solution', 'of', 'a', 'nonlinear', 'differential', 'equation', 'de', 'with', 'a', 'delta', 'source', 'that', 'is', 'at', 'the', 'same', 'time', 'a', 'greens', 'function', 'for', 'a', 'related', 'linear', 'de', 'for', 'an', 'arbitrary', 'source', 'the', 'blues', 'function', 'can', 'be', 'used', 'to', 'construct', 'an', 'exact', 'solution', 'to', 'the', 'nonlinear', 'de', 'with', 'a', 'different', 'but', 'related', 'source', 'alternatively', 'the', 'blues', 'function', 'can', 'be', 'used', 'to', 'construct', 'an', 'approximate', 'piecewise', 'analytical', 'solution', 'to', 'the', 'nonlinear', 'de', 'with', 'an', 'arbitrary', 'source', 'for', 'this', 'alternative', 'use', 'the', 'related', 'linear', 'de', 'need', 'not', 'be', 'known', 'the', 'method', 'is', 'illustrated', 'in', 'a', 'few', 'examples', 'using', 'analytical', 'calculations', 'and', 'numerical', 'computations', 'areas', 'for', 'further', 'applications', 'are', 'suggested']] | [-0.06800866859789029, 0.02493841706740296, -0.13273867394584488, 0.09683707099055916, -0.1141675129738145, -0.13923252927960725, -0.031193621097293896, 0.3143442691135125, -0.2962904982708805, -0.28034133038769554, 0.12167741866657643, -0.25845666085993213, -0.16326860849576907, 0.25270936376136527, -0.02503802251129404, 0.09010905639715786, -0.004644988739027048, 0.026844159696309818, -0.08518392871331981, -0.20281475514547503, 0.28576108402073913, 0.06410714491879142, 0.2272037323857621, 0.009551023387929469, 0.14712418249888917, 0.0009285811239516171, -0.005151804859243978, 0.029791083882606817, -0.13159666903462264, 0.08538312358253701, 0.3071491255912578, 0.1276743284529295, 0.2830838392026664, -0.4027747759874177, -0.21351462675947844, 0.08001069857566581, 0.15828946065964308, 0.17179274759768676, -0.07723295272833954, -0.25016290850673367, 0.07251640206100199, -0.18510347785149503, -0.189747910420447, -0.06319257132635694, -0.012987983248042545, 0.04484262997944524, -0.306225836024011, 0.06230613562153784, -0.00826546348361885, -0.00834983524800632, -0.07178382953907561, -0.07916170112260683, 0.018028181365243798, 0.08444244573699443, -0.024866099601877783, 0.08252357523595019, 0.04789929236028725, -0.08663364625755902, -0.12000832606774323, 0.33667152215851337, -0.12225445839539757, -0.30760960137896887, 0.17710463442990013, -0.0433279921293376, -0.10145908074754137, 0.11195959526803491, 0.14042662997825409, 0.17144322147460903, -0.15306381622740017, 0.12302001737246994, -0.0076687714620310024, 0.20519899824766194, 0.0804558085079679, -0.03368818819684189, 0.1633375732257493, 0.11892548040670203, 0.08654982020975802, 0.1410555568840868, -0.015780850040440365, -0.08089789253930876, -0.33676018117098355, -0.16736774171764895, -0.200132985746004, 0.05276599009606096, -0.0909563087065123, -0.22353819989430623, 0.35670178844116807, 0.0982462588521674, 0.1818613202978424, 0.05581320005315026, 0.25395235222742313, 0.22334603649861084, 0.023123892112158415, 0.07531651026224644, 0.18155117758263753, 0.11116780031391779, 0.08890853417435969, -0.20211220085694212, 0.038725063479762144, 0.07015481397626906] |
1,802.10091 | Blockchain platform with proof-of-work based on analog Hamiltonian
optimisers | The development of quantum information platforms such as quantum computers
and quantum simulators that will rival classical Turing computations are
typically viewed as a threat to secure data transmissions and therefore to
crypto-systems and financial markets in general. We propose to use such
platforms as a proof-of-work protocol for blockchain technology, which
underlies cryptocurrencies providing a way to document the transactions in a
permanent decentralised public record and to be further securely and
transparently monitored. We reconsider the basis of blockchain encryption and
suggest to move from currently used proof-of-work schemes to the proof-of-work
performed by analog Hamiltonian optimisers. This approach has a potential to
significantly increase decentralisation of the existing blockchains and to help
achieve faster transaction times, therefore, removing the main obstacles for
blockchain implementation. We discuss the proof-of-work protocols for a few
most promising optimiser platforms: quantum annealing hardware based on D-wave
simulators and a new class of gain-dissipative simulators.
| quant-ph | the development of quantum information platforms such as quantum computers and quantum simulators that will rival classical turing computations are typically viewed as a threat to secure data transmissions and therefore to cryptosystems and financial markets in general we propose to use such platforms as a proofofwork protocol for blockchain technology which underlies cryptocurrencies providing a way to document the transactions in a permanent decentralised public record and to be further securely and transparently monitored we reconsider the basis of blockchain encryption and suggest to move from currently used proofofwork schemes to the proofofwork performed by analog hamiltonian optimisers this approach has a potential to significantly increase decentralisation of the existing blockchains and to help achieve faster transaction times therefore removing the main obstacles for blockchain implementation we discuss the proofofwork protocols for a few most promising optimiser platforms quantum annealing hardware based on dwave simulators and a new class of gaindissipative simulators | [['the', 'development', 'of', 'quantum', 'information', 'platforms', 'such', 'as', 'quantum', 'computers', 'and', 'quantum', 'simulators', 'that', 'will', 'rival', 'classical', 'turing', 'computations', 'are', 'typically', 'viewed', 'as', 'a', 'threat', 'to', 'secure', 'data', 'transmissions', 'and', 'therefore', 'to', 'cryptosystems', 'and', 'financial', 'markets', 'in', 'general', 'we', 'propose', 'to', 'use', 'such', 'platforms', 'as', 'a', 'proofofwork', 'protocol', 'for', 'blockchain', 'technology', 'which', 'underlies', 'cryptocurrencies', 'providing', 'a', 'way', 'to', 'document', 'the', 'transactions', 'in', 'a', 'permanent', 'decentralised', 'public', 'record', 'and', 'to', 'be', 'further', 'securely', 'and', 'transparently', 'monitored', 'we', 'reconsider', 'the', 'basis', 'of', 'blockchain', 'encryption', 'and', 'suggest', 'to', 'move', 'from', 'currently', 'used', 'proofofwork', 'schemes', 'to', 'the', 'proofofwork', 'performed', 'by', 'analog', 'hamiltonian', 'optimisers', 'this', 'approach', 'has', 'a', 'potential', 'to', 'significantly', 'increase', 'decentralisation', 'of', 'the', 'existing', 'blockchains', 'and', 'to', 'help', 'achieve', 'faster', 'transaction', 'times', 'therefore', 'removing', 'the', 'main', 'obstacles', 'for', 'blockchain', 'implementation', 'we', 'discuss', 'the', 'proofofwork', 'protocols', 'for', 'a', 'few', 'most', 'promising', 'optimiser', 'platforms', 'quantum', 'annealing', 'hardware', 'based', 'on', 'dwave', 'simulators', 'and', 'a', 'new', 'class', 'of', 'gaindissipative', 'simulators']] | [-0.16381257996450063, 0.022887142233587073, -0.08881610162667261, 0.06560522824977799, -0.09589773974095295, -0.24651462973393742, 0.10889248322129395, 0.36528713201793533, -0.29612967717458244, -0.3143348359115562, 0.1588901725325283, -0.2627082983628402, -0.12918062322754778, 0.25298243078092736, -0.12272873317542808, 0.11919498979646616, 0.04808595670642806, -0.0384941785748488, -0.0025547587699287274, -0.3106031803158568, 0.22539153694954328, 0.07056430370388614, 0.3084258670382981, 0.07286227151966088, 0.06004624935612691, -0.028173522941549036, 0.012475144273291031, -0.05545934995794608, -0.07447626811911214, 0.1537208877339521, 0.33196350407415354, 0.21158687098657872, 0.3311087389239201, -0.4932148320162121, -0.15311835142570773, 0.1053756737801569, 0.14047695678092686, 0.15151020655221323, -0.07108361230329215, -0.32145872242517426, 0.08056423529637126, -0.277766012779157, -0.11121731283587519, -0.13126343153067105, -0.020611851902228164, 0.007744975216090192, -0.23088676614528583, -0.025944172197745904, -0.010541470133961221, 0.03564090709037641, 0.0524349574416608, -0.058110197777007676, 0.055654339002311426, 0.11249530336856112, -0.017259420680988874, 0.024909047394293952, 0.18869570457434368, -0.10231268376696344, -0.2615105599268443, 0.4002609005794416, -0.0021547166466274682, -0.11841582339500485, 0.17132967696494722, 0.021263731926606567, -0.1481488014895125, 0.01738069922316308, 0.20581723876857486, 0.05240586179679905, -0.18720165185411186, 0.010767901721075664, 0.027098543496096347, 0.19234081603939723, 0.01477763366511128, 0.1154691233422175, 0.18652000514184752, 0.18447554019870224, 0.10516188122344271, 0.09046320167287965, -0.003655298766330055, -0.1913201417773962, -0.20358462425089005, -0.216320336106982, -0.20063451894869408, 0.06951156384585534, -0.0463648065947471, -0.17755394333249164, 0.3467107919878722, 0.24703975709945, 0.08778512986449927, 0.030871128982231263, 0.3930123944346811, -0.003062238012063104, 0.15918927719920045, 0.1465629868611109, 0.15771256441104353, 0.016274407629252356, 0.17577691062420508, -0.12899696851877557, 0.13472736041715988, 0.014703299173799167] |
1,802.10092 | The Multi-phase Turbulence Density Power Spectra in the Perseus
Molecular Cloud | We derive two-dimensional spatial power spectra of four distinct interstellar
medium tracers, HI, $^{12}$CO($J$=1--0), $^{13}$CO($J$=1--0), and dust, in the
Perseus molecular cloud, covering linear scales ranging from $\sim$0.1 pc to
$\sim$90 pc. Among the four tracers, we find the steepest slopes of
$-3.23\pm0.05$ and $-3.22\pm0.05$ for the uncorrected and opacity-corrected HI
column density images. This result suggests that the HI in and around Perseus
traces a non-gravitating, transonic medium on average, with a negligible effect
from opacity. On the other hand, we measure the shallowest slope of
$-2.72\pm0.12$ for the 2MASS dust extinction data and interpret this as the
signature of a self-gravitating, supersonic medium. Possible variations in the
dust-to-gas ratio likely do not change our conclusion. Finally, we derive
slopes of $-3.08\pm0.08$ and $-2.88\pm0.07$ for the ${}^{12}$CO(1--0) and
${}^{13}$CO(1--0) integrated intensity images. Based on theoretical predictions
for an optically thick medium, we interpret these slopes of roughly $-3$ as
implying that both CO lines are susceptible to the opacity effect. While simple
tests for the impact of CO formation and depletion indicate that the measured
slopes of ${}^{12}$CO(1--0) and ${}^{13}$CO(1--0) are not likely affected by
these chemical effects, our results generally suggest that chemically more
complex and/or fully optically thick media may not be a reliable observational
tracer for characterizing turbulence.
| astro-ph.GA | we derive twodimensional spatial power spectra of four distinct interstellar medium tracers hi 12coj10 13coj10 and dust in the perseus molecular cloud covering linear scales ranging from sim01 pc to sim90 pc among the four tracers we find the steepest slopes of 323pm005 and 322pm005 for the uncorrected and opacitycorrected hi column density images this result suggests that the hi in and around perseus traces a nongravitating transonic medium on average with a negligible effect from opacity on the other hand we measure the shallowest slope of 272pm012 for the 2mass dust extinction data and interpret this as the signature of a selfgravitating supersonic medium possible variations in the dusttogas ratio likely do not change our conclusion finally we derive slopes of 308pm008 and 288pm007 for the 12co10 and 13co10 integrated intensity images based on theoretical predictions for an optically thick medium we interpret these slopes of roughly 3 as implying that both co lines are susceptible to the opacity effect while simple tests for the impact of co formation and depletion indicate that the measured slopes of 12co10 and 13co10 are not likely affected by these chemical effects our results generally suggest that chemically more complex andor fully optically thick media may not be a reliable observational tracer for characterizing turbulence | [['we', 'derive', 'twodimensional', 'spatial', 'power', 'spectra', 'of', 'four', 'distinct', 'interstellar', 'medium', 'tracers', 'hi', '12coj10', '13coj10', 'and', 'dust', 'in', 'the', 'perseus', 'molecular', 'cloud', 'covering', 'linear', 'scales', 'ranging', 'from', 'sim01', 'pc', 'to', 'sim90', 'pc', 'among', 'the', 'four', 'tracers', 'we', 'find', 'the', 'steepest', 'slopes', 'of', '323pm005', 'and', '322pm005', 'for', 'the', 'uncorrected', 'and', 'opacitycorrected', 'hi', 'column', 'density', 'images', 'this', 'result', 'suggests', 'that', 'the', 'hi', 'in', 'and', 'around', 'perseus', 'traces', 'a', 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1,802.10093 | Solving the Hierarchy Problem Discretely | We present a new solution to the Hierarchy Problem utilizing non-linearly
realized discrete symmetries. The cancelations occur due to a discrete symmetry
that is realized as a shift symmetry on the scalar and as an exchange symmetry
on the particles with which the scalar interacts. We show how this mechanism
can be used to solve the Little Hierarchy Problem as well as give rise to light
axions.
| hep-ph hep-th | we present a new solution to the hierarchy problem utilizing nonlinearly realized discrete symmetries the cancelations occur due to a discrete symmetry that is realized as a shift symmetry on the scalar and as an exchange symmetry on the particles with which the scalar interacts we show how this mechanism can be used to solve the little hierarchy problem as well as give rise to light axions | [['we', 'present', 'a', 'new', 'solution', 'to', 'the', 'hierarchy', 'problem', 'utilizing', 'nonlinearly', 'realized', 'discrete', 'symmetries', 'the', 'cancelations', 'occur', 'due', 'to', 'a', 'discrete', 'symmetry', 'that', 'is', 'realized', 'as', 'a', 'shift', 'symmetry', 'on', 'the', 'scalar', 'and', 'as', 'an', 'exchange', 'symmetry', 'on', 'the', 'particles', 'with', 'which', 'the', 'scalar', 'interacts', 'we', 'show', 'how', 'this', 'mechanism', 'can', 'be', 'used', 'to', 'solve', 'the', 'little', 'hierarchy', 'problem', 'as', 'well', 'as', 'give', 'rise', 'to', 'light', 'axions']] | [-0.12050021443613318, 0.1844276074033818, -0.0818481204836671, 0.12748284624548933, -0.1517051313239247, -0.15157606397797144, 0.027994970711114914, 0.34523336155645884, -0.3407990312370569, -0.33915331439851826, 0.13596653511553114, -0.23006735503006337, -0.16378950474978382, 0.13444604980411815, -0.02742305536990735, -0.004027531371076605, -0.021510632319459273, 0.054540842938334194, -0.05586354884513612, -0.20587696170489958, 0.2994379378896929, 0.023815856704404996, 0.260678094172322, 0.07620487757610964, 0.14638709253284024, -0.009336395745179546, 0.07192341374136063, -0.02594739835320124, -0.05192697353701458, 0.07628475464254951, 0.17598308064738538, 0.07555499835523652, 0.1706878443582178, -0.4492772522090531, -0.21429780526642703, 0.14398400060165284, 0.1920170890681668, 0.15806422462346337, -0.1093680363238803, -0.29714899500414954, 0.030792823659061497, -0.1761181313099701, -0.14643457892642758, -0.09082863885742515, -0.0784987769325945, -0.07333323914112884, -0.26561799937330965, 0.059948650661355525, 0.02902948262983127, -0.012178526107055037, -0.04406401531687423, -0.03855207797362289, -0.040097166620778724, 0.06451573537718226, 0.13239200038960508, 0.014930646449549874, 0.06907614823535028, -0.10445174644006167, -0.1350251854251403, 0.47829376105497134, -0.10060034051481913, -0.2576050805622962, 0.17639975113544, -0.01520929179752051, -0.1271308465485475, 0.07198130884277287, 0.20718012716787965, 0.12439309973825714, -0.08773102719725957, 0.11567955158925407, -0.0776677002935712, 0.1915427312922122, 0.05790946604822999, 0.03659312569522368, 0.21828233659156224, 0.14201738966156296, 0.12182628580216151, 0.15783025657778968, 0.008289864526561169, -0.12319824320556068, -0.33055879503710944, -0.12803362542763352, -0.15416438792790496, 0.0632434318592744, -0.010877262140448733, -0.1428336409240294, 0.39758617870176016, 0.10534702824539881, 0.25847355546012746, 0.012390439789533726, 0.221008160554651, 0.186929151255971, 0.11970285205048885, -0.0008258154101447383, 0.23806551102993648, 0.13998409958014182, 0.11234797686060417, -0.2457512611264377, -0.020279998849354573, 0.0709239453313622] |
1,802.10094 | Insights on Dark Matter from Hydrogen during Cosmic Dawn | The origin and composition of the cosmological dark matter remain a mystery.
However, upcoming 21-cm measurements during cosmic dawn, the period of the
first stellar formation, can provide new clues on the nature of dark matter.
During this era, the baryon-dark matter fluid is the slowest it will ever be,
making it ideal to search for dark matter elastically scattering with baryons
through massless mediators, such as the photon. Here we explore whether
dark-matter particles with an electric "minicharge" can significantly alter the
baryonic temperature and, thus, affect 21-cm observations. We find that the
entirety of the dark matter cannot be minicharged at a significant level, lest
it interferes with Galactic and extragalactic magnetic fields. However, if
minicharged particles comprise a subpercent fraction of the dark matter, and
have charges $\epsilon \sim 10^{-6}$---in units of the electron charge---and
masses $m_\chi \sim 1-60$ MeV, they can significantly cool down the baryonic
fluid, and be discovered in 21-cm experiments. We show how this scenario can
explain the recent result by the EDGES collaboration, which requires a lower
baryonic temperature than possible within the standard model, while remaining
consistent with all current observations.
| astro-ph.CO hep-ph | the origin and composition of the cosmological dark matter remain a mystery however upcoming 21cm measurements during cosmic dawn the period of the first stellar formation can provide new clues on the nature of dark matter during this era the baryondark matter fluid is the slowest it will ever be making it ideal to search for dark matter elastically scattering with baryons through massless mediators such as the photon here we explore whether darkmatter particles with an electric minicharge can significantly alter the baryonic temperature and thus affect 21cm observations we find that the entirety of the dark matter cannot be minicharged at a significant level lest it interferes with galactic and extragalactic magnetic fields however if minicharged particles comprise a subpercent fraction of the dark matter and have charges epsilon sim 106in units of the electron chargeand masses m_chi sim 160 mev they can significantly cool down the baryonic fluid and be discovered in 21cm experiments we show how this scenario can explain the recent result by the edges collaboration which requires a lower baryonic temperature than possible within the standard model while remaining consistent with all current observations | [['the', 'origin', 'and', 'composition', 'of', 'the', 'cosmological', 'dark', 'matter', 'remain', 'a', 'mystery', 'however', 'upcoming', '21cm', 'measurements', 'during', 'cosmic', 'dawn', 'the', 'period', 'of', 'the', 'first', 'stellar', 'formation', 'can', 'provide', 'new', 'clues', 'on', 'the', 'nature', 'of', 'dark', 'matter', 'during', 'this', 'era', 'the', 'baryondark', 'matter', 'fluid', 'is', 'the', 'slowest', 'it', 'will', 'ever', 'be', 'making', 'it', 'ideal', 'to', 'search', 'for', 'dark', 'matter', 'elastically', 'scattering', 'with', 'baryons', 'through', 'massless', 'mediators', 'such', 'as', 'the', 'photon', 'here', 'we', 'explore', 'whether', 'darkmatter', 'particles', 'with', 'an', 'electric', 'minicharge', 'can', 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1,802.10095 | Strain-Induced Topological Magnon Phase Transitions: Applications to
Kagome-Lattice Ferromagnets | A common feature of topological insulators is that they are characterized by
topologically invariant quantity such as the Chern number and the
$\mathbb{Z}_2$ index. This quantity distinguishes a nontrivial topological
system from a trivial one. A topological phase transition may occur when there
are two topologically distinct phases, and it is usually defined by a gap
closing point where the topologically invariant quantity is ill-defined. In
this paper, we show that the magnon bands in the strained (distorted)
kagome-lattice ferromagnets realize an example of a topological magnon phase
transition in the realistic parameter regime of the system. When spin-orbit
coupling (SOC) is neglected (i.e. no Dzyaloshinskii-Moriya interaction), we
show that all three magnon branches are dispersive with no flat band, and there
exists a critical point where tilted Dirac and semi-Dirac point coexist in the
magnon spectra. The critical point separates two gapless magnon phases as
opposed to the usual phase transition. Upon the inclusion of SOC, we realize a
topological magnon phase transition point at the critical strain
$\delta_c=\frac{1}{2}\big[ 1-(D/J)^2\big]$, where $D$ and $J$ denote the
perturbative SOC and the Heisenberg spin exchange interaction respectively. It
separates two distinct topological magnon phases with different Chern numbers
for $\delta<\delta_c$ and for $\delta>\delta_c$. The associated anomalous
thermal Hall conductivity develops an abrupt change at $\delta_c$, due to the
divergence of the Berry curvature in momentum space. The proposed topological
magnon phase transition is experimentally feasible by applying external
perturbations such as uniaxial strain or pressure.
| cond-mat.str-el | a common feature of topological insulators is that they are characterized by topologically invariant quantity such as the chern number and the mathbbz_2 index this quantity distinguishes a nontrivial topological system from a trivial one a topological phase transition may occur when there are two topologically distinct phases and it is usually defined by a gap closing point where the topologically invariant quantity is illdefined in this paper we show that the magnon bands in the strained distorted kagomelattice ferromagnets realize an example of a topological magnon phase transition in the realistic parameter regime of the system when spinorbit coupling soc is neglected ie no dzyaloshinskiimoriya interaction we show that all three magnon branches are dispersive with no flat band and there exists a critical point where tilted dirac and semidirac point coexist in the magnon spectra the critical point separates two gapless magnon phases as opposed to the usual phase transition upon the inclusion of soc we realize a topological magnon phase transition point at the critical strain delta_cfrac12big 1dj2big where d and j denote the perturbative soc and the heisenberg spin exchange interaction respectively it separates two distinct topological magnon phases with different chern numbers for deltadelta_c and for deltadelta_c the associated anomalous thermal hall conductivity develops an abrupt change at delta_c due to the divergence of the berry curvature in momentum space the proposed topological magnon phase transition is experimentally feasible by applying external perturbations such as uniaxial strain or pressure | [['a', 'common', 'feature', 'of', 'topological', 'insulators', 'is', 'that', 'they', 'are', 'characterized', 'by', 'topologically', 'invariant', 'quantity', 'such', 'as', 'the', 'chern', 'number', 'and', 'the', 'mathbbz_2', 'index', 'this', 'quantity', 'distinguishes', 'a', 'nontrivial', 'topological', 'system', 'from', 'a', 'trivial', 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1,802.10096 | The imprint of cosmic reionisation on the luminosity function of
galaxies | The (re)ionisation of hydrogen in the early universe has a profound effect on
the formation of the first galaxies: by raising the gas temperature and
pressure, it prevents gas from cooling into small haloes thus affecting the
abundance of present-day small galaxies. Using the Galform semi-analytic model
of galaxy formation, we show that two key aspects of the reionisation process
-- when reionisation takes place and the characteristic scale below which it
suppresses galaxy formation -- are imprinted in the luminosity function of
dwarf galaxies. We focus on the luminosity function of satellites of galaxies
like the Milky Way and the LMC, which is easier to measure than the luminosity
function of the dwarf population as a whole. Our results show that the details
of these two characteristic properties of reionisation determine the shape of
the luminosity distribution of satellites in a unique way, and is largely
independent of the other details of the galaxy formation model. Our models
generically predict a bimodality in the distribution of satellites as a
function of luminosity: a population of faint satellites and population of
bright satellites separated by a 'valley' forged by reionisation. We show that
this bimodal distribution is present at high statistical significance in the
combined satellite luminosity function of the Milky Way and M31. We make
predictions for the expected number of satellites around LMC-mass dwarfs where
the bimodality may also be measurable in future observational programmes. Our
preferred model predicts a total of $26 \pm 10$ (68 per cent confidence)
satellites brighter than ${\rm M}_V=0$ in LMC-mass systems.
| astro-ph.GA astro-ph.CO | the reionisation of hydrogen in the early universe has a profound effect on the formation of the first galaxies by raising the gas temperature and pressure it prevents gas from cooling into small haloes thus affecting the abundance of presentday small galaxies using the galform semianalytic model of galaxy formation we show that two key aspects of the reionisation process when reionisation takes place and the characteristic scale below which it suppresses galaxy formation are imprinted in the luminosity function of dwarf galaxies we focus on the luminosity function of satellites of galaxies like the milky way and the lmc which is easier to measure than the luminosity function of the dwarf population as a whole our results show that the details of these two characteristic properties of reionisation determine the shape of the luminosity distribution of satellites in a unique way and is largely independent of the other details of the galaxy formation model our models generically predict a bimodality in the distribution of satellites as a function of luminosity a population of faint satellites and population of bright satellites separated by a valley forged by reionisation we show that this bimodal distribution is present at high statistical significance in the combined satellite luminosity function of the milky way and m31 we make predictions for the expected number of satellites around lmcmass dwarfs where the bimodality may also be measurable in future observational programmes our preferred model predicts a total of 26 pm 10 68 per cent confidence satellites brighter than rm m_v0 in lmcmass systems | [['the', 'reionisation', 'of', 'hydrogen', 'in', 'the', 'early', 'universe', 'has', 'a', 'profound', 'effect', 'on', 'the', 'formation', 'of', 'the', 'first', 'galaxies', 'by', 'raising', 'the', 'gas', 'temperature', 'and', 'pressure', 'it', 'prevents', 'gas', 'from', 'cooling', 'into', 'small', 'haloes', 'thus', 'affecting', 'the', 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1,802.10097 | A new leading contribution to neutrinoless double-beta decay | Within the framework of chiral effective field theory we discuss the leading
contributions to the neutrinoless double-beta decay transition operator induced
by light Majorana neutrinos. Based on renormalization arguments in both
dimensional regularization with minimal subtraction and a coordinate-space
cutoff scheme, we show the need to introduce a leading-order short-range
operator, missing in all current calculations. We discuss strategies to
determine the finite part of the short-range coupling by matching to lattice
QCD or by relating it via chiral symmetry to isospin-breaking observables in
the two-nucleon sector. Finally, we speculate on the impact of this new
contribution on nuclear matrix elements of relevance to experiment.
| hep-ph hep-lat nucl-th | within the framework of chiral effective field theory we discuss the leading contributions to the neutrinoless doublebeta decay transition operator induced by light majorana neutrinos based on renormalization arguments in both dimensional regularization with minimal subtraction and a coordinatespace cutoff scheme we show the need to introduce a leadingorder shortrange operator missing in all current calculations we discuss strategies to determine the finite part of the shortrange coupling by matching to lattice qcd or by relating it via chiral symmetry to isospinbreaking observables in the twonucleon sector finally we speculate on the impact of this new contribution on nuclear matrix elements of relevance to experiment | [['within', 'the', 'framework', 'of', 'chiral', 'effective', 'field', 'theory', 'we', 'discuss', 'the', 'leading', 'contributions', 'to', 'the', 'neutrinoless', 'doublebeta', 'decay', 'transition', 'operator', 'induced', 'by', 'light', 'majorana', 'neutrinos', 'based', 'on', 'renormalization', 'arguments', 'in', 'both', 'dimensional', 'regularization', 'with', 'minimal', 'subtraction', 'and', 'a', 'coordinatespace', 'cutoff', 'scheme', 'we', 'show', 'the', 'need', 'to', 'introduce', 'a', 'leadingorder', 'shortrange', 'operator', 'missing', 'in', 'all', 'current', 'calculations', 'we', 'discuss', 'strategies', 'to', 'determine', 'the', 'finite', 'part', 'of', 'the', 'shortrange', 'coupling', 'by', 'matching', 'to', 'lattice', 'qcd', 'or', 'by', 'relating', 'it', 'via', 'chiral', 'symmetry', 'to', 'isospinbreaking', 'observables', 'in', 'the', 'twonucleon', 'sector', 'finally', 'we', 'speculate', 'on', 'the', 'impact', 'of', 'this', 'new', 'contribution', 'on', 'nuclear', 'matrix', 'elements', 'of', 'relevance', 'to', 'experiment']] | [-0.08989676638462005, 0.20961406881965342, -0.08830997577557961, 0.1129636615370622, -0.07161692744120955, -0.08654263087637012, 0.062110192965649604, 0.35578419657069305, -0.2120096502204736, -0.23205201710086493, 0.032139354206932085, -0.310641504841901, -0.14255548947756844, 0.07105262465331526, 0.04042766798021538, 0.06298284944856451, 0.015431581916553633, 0.027518758050254766, -0.11631996356216924, -0.20434664902720778, 0.38036205307802273, 0.04598129243545589, 0.2262245720917625, 0.17834922697483785, 0.04917966864027438, 0.04620946898080763, -0.06231089855677315, -0.056983006772186075, -0.1341097962332978, 0.10547609900434812, 0.22056663570748197, 0.025089359270142657, 0.16875770246343955, -0.4495260643994524, -0.17026081703425872, 0.09751182615180455, 0.12513107262729178, 0.1561102764769679, -0.07868399005715869, -0.3123830691778234, 0.07597864473327284, -0.24434639458500204, -0.14467164222816273, -0.15933513847357106, -0.04843920584923277, -0.07344513416645072, -0.30744282971358017, 0.06410162951658657, -0.03849041317367838, 0.013254719023479127, -0.024927268396242565, -0.1603715179554586, 0.06419093701101485, 0.06419438727510472, 0.12203009768965699, 0.012645628799994786, 0.1389278931288226, -0.1423155457566498, -0.14979486645066312, 0.39967445330638884, -0.09641160947503521, -0.1781690978400764, 0.09770256790576413, -0.15618329462817027, -0.12721251572171846, 0.08999214292659113, 0.16302470352855467, 0.07694880901586397, -0.1607914940143625, 0.13880206663993055, 0.017742472572163458, 0.1547928759273851, 0.008386296758960401, 0.059952798893763905, 0.18631476177168743, 0.15525844058997573, 0.06179980413899535, 0.05988245545221227, -0.0650401343702383, -0.10196281305647321, -0.39899892477939525, -0.07781329729727336, -0.16044687706023633, 0.04642451190434042, -0.08532409823618807, -0.15945517467334866, 0.4214959484204536, 0.18465434720994728, 0.18597829380028305, -0.013130926704477696, 0.294431716562914, 0.10617947097634897, 0.11698559310198539, 0.013966833170325984, 0.28113192746060944, 0.18257698624040045, 0.0373245797652219, -0.3488204025441692, -0.043686733638779035, 0.17440782705144514] |
1,802.10098 | The Bright and Choked Gamma-Ray Burst Contribution to the IceCube and
ANTARES Low-Energy Excess | The increasing statistics of the high-energy neutrino flux observed by the
IceCube Observatory points towards an excess of events above the atmospheric
neutrino background in the 30--400 TeV energy range. Such an excess is
compatible with the findings of the ANTARES Telescope and it would naturally
imply the possibility that more than one source class contributes to the
observed flux. Electromagnetically hidden sources have been invoked to
interpret this excess of events at low energies. By adopting a unified model
for the electromagnetically bright and choked gamma-ray bursts and taking into
account particle acceleration at the internal and collimation shock radii, we
discuss whether bright and choked bursts are viable candidates. Our findings
suggest that, although producing a copious neutrino flux, choked and bright
astrophysical jets cannot be the dominant sources of the excess of neutrino
events. A fine tuning of the model parameters or distinct scenarios for choked
jets should be invoked in order to explain the low-energy neutrino data of
IceCube and ANTARES.
| astro-ph.HE hep-ph | the increasing statistics of the highenergy neutrino flux observed by the icecube observatory points towards an excess of events above the atmospheric neutrino background in the 30400 tev energy range such an excess is compatible with the findings of the antares telescope and it would naturally imply the possibility that more than one source class contributes to the observed flux electromagnetically hidden sources have been invoked to interpret this excess of events at low energies by adopting a unified model for the electromagnetically bright and choked gammaray bursts and taking into account particle acceleration at the internal and collimation shock radii we discuss whether bright and choked bursts are viable candidates our findings suggest that although producing a copious neutrino flux choked and bright astrophysical jets cannot be the dominant sources of the excess of neutrino events a fine tuning of the model parameters or distinct scenarios for choked jets should be invoked in order to explain the lowenergy neutrino data of icecube and antares | [['the', 'increasing', 'statistics', 'of', 'the', 'highenergy', 'neutrino', 'flux', 'observed', 'by', 'the', 'icecube', 'observatory', 'points', 'towards', 'an', 'excess', 'of', 'events', 'above', 'the', 'atmospheric', 'neutrino', 'background', 'in', 'the', '30400', 'tev', 'energy', 'range', 'such', 'an', 'excess', 'is', 'compatible', 'with', 'the', 'findings', 'of', 'the', 'antares', 'telescope', 'and', 'it', 'would', 'naturally', 'imply', 'the', 'possibility', 'that', 'more', 'than', 'one', 'source', 'class', 'contributes', 'to', 'the', 'observed', 'flux', 'electromagnetically', 'hidden', 'sources', 'have', 'been', 'invoked', 'to', 'interpret', 'this', 'excess', 'of', 'events', 'at', 'low', 'energies', 'by', 'adopting', 'a', 'unified', 'model', 'for', 'the', 'electromagnetically', 'bright', 'and', 'choked', 'gammaray', 'bursts', 'and', 'taking', 'into', 'account', 'particle', 'acceleration', 'at', 'the', 'internal', 'and', 'collimation', 'shock', 'radii', 'we', 'discuss', 'whether', 'bright', 'and', 'choked', 'bursts', 'are', 'viable', 'candidates', 'our', 'findings', 'suggest', 'that', 'although', 'producing', 'a', 'copious', 'neutrino', 'flux', 'choked', 'and', 'bright', 'astrophysical', 'jets', 'can', 'not', 'be', 'the', 'dominant', 'sources', 'of', 'the', 'excess', 'of', 'neutrino', 'events', 'a', 'fine', 'tuning', 'of', 'the', 'model', 'parameters', 'or', 'distinct', 'scenarios', 'for', 'choked', 'jets', 'should', 'be', 'invoked', 'in', 'order', 'to', 'explain', 'the', 'lowenergy', 'neutrino', 'data', 'of', 'icecube', 'and', 'antares']] | [-0.062274441694565884, 0.24682258158878015, -0.02187527411235833, 0.24707770514784447, -0.1018669442624325, -0.08722607193918652, 0.040881625831082284, 0.3956110195764509, -0.18943998063577855, -0.402676602982613, 0.0309476627020098, -0.3238979863249753, 0.025987095509498685, 0.22902304864999087, 0.018104668631298934, -0.027217008128582715, 0.07822023742798581, -0.0661823387111885, 0.009044902143910169, -0.1679247827717967, 0.2857900940201593, 0.19680617863160885, 0.209543282457863, 0.0516689345465008, 0.12255166791707658, -0.11714093638121162, -0.05580113473325878, -0.05513410070414532, -0.05790185537625803, 0.024485892818185938, 0.2325079972709877, 0.1133294911895239, 0.11567869738739472, -0.4209292814225318, -0.2885224040715495, 0.18306292026831084, 0.1684046593236636, 0.015478802442337465, -0.08660388494330158, -0.31815675232020846, 0.07203966101837704, -0.20406642987979126, -0.18815114548575718, 0.03824878571953355, -0.02240518229755472, 0.01526487634463954, -0.23948448081500828, 0.05468524665240737, 0.017311821231640965, -0.011728287859629077, -0.08471588484090135, -0.07927779098958652, -0.021908753974424922, 0.03646964811388942, 0.14062689703395478, 0.004952698281169476, 0.13987633429680874, -0.1564849186338013, -0.13259999292442598, 0.37834235847400255, -0.0324832553880083, -0.025345538939203483, 0.18219627333659094, -0.17931782003177935, -0.17092041456118137, 0.24361341754086765, 0.15371804251910626, 0.04441305476939306, -0.18959392090671673, -0.006880805848190191, -0.03259381176258651, 0.15702540401849022, 0.032773349044216145, 0.06567204203204173, 0.3466008007975228, 0.18211641350371136, 0.05006191031642662, 0.04621188676248428, -0.23071630311995206, -0.002059248379846833, -0.3665575997185815, -0.08038114893519466, -0.09909103984989405, 0.08731181653791896, -0.06445820154616938, -0.09891655374001375, 0.3941658711094544, 0.13502309250880976, 0.20839614791975145, -0.051097571925563086, 0.2646567980023886, 0.09864156251473083, 0.09234948142667312, 0.10967531704613154, 0.35868253499965175, 0.08606179749048933, 0.12501671011293172, -0.20686015688971313, 0.0603237016833421, 0.006310389500605054] |
1,802.10099 | The Higgs Mechanism in Higher-Rank Symmetric $U(1)$ Gauge Theories | We use the Higgs mechanism to investigate connections between higher-rank
symmetric $U(1)$ gauge theories and gapped fracton phases. We define two
classes of rank-2 symmetric $U(1)$ gauge theories: the $(m,n)$ scalar and
vector charge theories, for integer $m$ and $n$, which respect the symmetry of
the square (cubic) lattice in two (three) spatial dimensions. We further
provide local lattice rotor models whose low energy dynamics are described by
these theories. We then describe in detail the Higgs phases obtained when the
$U(1)$ gauge symmetry is spontaneously broken to a discrete subgroup. A subset
of the scalar charge theories indeed have X-cube fracton order as their Higgs
phase, although we find that this can only occur if the continuum higher rank
gauge theory breaks continuous spatial rotational symmetry. However, not all
higher rank gauge theories have fractonic Higgs phases; other Higgs phases
possess conventional topological order. Nevertheless, they yield interesting
novel exactly solvable models of conventional topological order, somewhat
reminiscent of the color code models in both two and three spatial dimensions.
We also investigate phase transitions in these models and find a possible
direct phase transition between four copies of $\mathbb{Z}_2$ gauge theory in
three spatial dimensions and X-cube fracton order.
| cond-mat.str-el hep-th quant-ph | we use the higgs mechanism to investigate connections between higherrank symmetric u1 gauge theories and gapped fracton phases we define two classes of rank2 symmetric u1 gauge theories the mn scalar and vector charge theories for integer m and n which respect the symmetry of the square cubic lattice in two three spatial dimensions we further provide local lattice rotor models whose low energy dynamics are described by these theories we then describe in detail the higgs phases obtained when the u1 gauge symmetry is spontaneously broken to a discrete subgroup a subset of the scalar charge theories indeed have xcube fracton order as their higgs phase although we find that this can only occur if the continuum higher rank gauge theory breaks continuous spatial rotational symmetry however not all higher rank gauge theories have fractonic higgs phases other higgs phases possess conventional topological order nevertheless they yield interesting novel exactly solvable models of conventional topological order somewhat reminiscent of the color code models in both two and three spatial dimensions we also investigate phase transitions in these models and find a possible direct phase transition between four copies of mathbbz_2 gauge theory in three spatial dimensions and xcube fracton order | [['we', 'use', 'the', 'higgs', 'mechanism', 'to', 'investigate', 'connections', 'between', 'higherrank', 'symmetric', 'u1', 'gauge', 'theories', 'and', 'gapped', 'fracton', 'phases', 'we', 'define', 'two', 'classes', 'of', 'rank2', 'symmetric', 'u1', 'gauge', 'theories', 'the', 'mn', 'scalar', 'and', 'vector', 'charge', 'theories', 'for', 'integer', 'm', 'and', 'n', 'which', 'respect', 'the', 'symmetry', 'of', 'the', 'square', 'cubic', 'lattice', 'in', 'two', 'three', 'spatial', 'dimensions', 'we', 'further', 'provide', 'local', 'lattice', 'rotor', 'models', 'whose', 'low', 'energy', 'dynamics', 'are', 'described', 'by', 'these', 'theories', 'we', 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1,802.101 | Hall viscosity and geometric response in the Chern-Simons matrix model
of the Laughlin states | We study geometric aspects of the Laughlin fractional quantum Hall (FQH)
states using a description of these states in terms of a matrix quantum
mechanics model known as the Chern-Simons matrix model (CSMM). This model was
proposed by Polychronakos as a regularization of the noncommutative
Chern-Simons theory description of the Laughlin states proposed earlier by
Susskind. Both models can be understood as describing the electrons in a FQH
state as forming a noncommutative fluid, i.e., a fluid occupying a
noncommutative space. Here we revisit the CSMM in light of recent work on
geometric response in the FQH effect, with the goal of determining whether the
CSMM captures this aspect of the physics of the Laughlin states. For this model
we compute the Hall viscosity, Hall conductance in a non-uniform electric
field, and the Hall viscosity in the presence of anisotropy (or intrinsic
geometry). Our calculations show that the CSMM captures the guiding center
contribution to the known values of these quantities in the Laughlin states,
but lacks the Landau orbit contribution. The interesting correlations in a
Laughlin state are contained entirely in the guiding center part of the
state/wave function, and so we conclude that the CSMM accurately describes the
most important aspects of the physics of the Laughlin FQH states, including the
Hall viscosity and other geometric properties of these states which are of
current interest.
| cond-mat.str-el hep-th | we study geometric aspects of the laughlin fractional quantum hall fqh states using a description of these states in terms of a matrix quantum mechanics model known as the chernsimons matrix model csmm this model was proposed by polychronakos as a regularization of the noncommutative chernsimons theory description of the laughlin states proposed earlier by susskind both models can be understood as describing the electrons in a fqh state as forming a noncommutative fluid ie a fluid occupying a noncommutative space here we revisit the csmm in light of recent work on geometric response in the fqh effect with the goal of determining whether the csmm captures this aspect of the physics of the laughlin states for this model we compute the hall viscosity hall conductance in a nonuniform electric field and the hall viscosity in the presence of anisotropy or intrinsic geometry our calculations show that the csmm captures the guiding center contribution to the known values of these quantities in the laughlin states but lacks the landau orbit contribution the interesting correlations in a laughlin state are contained entirely in the guiding center part of the statewave function and so we conclude that the csmm accurately describes the most important aspects of the physics of the laughlin fqh states including the hall viscosity and other geometric properties of these states which are of current interest | [['we', 'study', 'geometric', 'aspects', 'of', 'the', 'laughlin', 'fractional', 'quantum', 'hall', 'fqh', 'states', 'using', 'a', 'description', 'of', 'these', 'states', 'in', 'terms', 'of', 'a', 'matrix', 'quantum', 'mechanics', 'model', 'known', 'as', 'the', 'chernsimons', 'matrix', 'model', 'csmm', 'this', 'model', 'was', 'proposed', 'by', 'polychronakos', 'as', 'a', 'regularization', 'of', 'the', 'noncommutative', 'chernsimons', 'theory', 'description', 'of', 'the', 'laughlin', 'states', 'proposed', 'earlier', 'by', 'susskind', 'both', 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1,802.10101 | Extracting foreground-obscured $\mu$-distortion anisotropies to
constrain primordial non-Gaussianity | Correlations between cosmic microwave background (CMB) temperature,
polarization and spectral distortion anisotropies can be used as a probe of
primordial non-Gaussianity. Here, we perform a reconstruction of
$\mu$-distortion anisotropies in the presence of Galactic and extragalactic
foregrounds, applying the so-called Constrained ILC component separation method
to simulations of proposed CMB space missions (PIXIE, LiteBIRD, CORE, PICO).
Our sky simulations include Galactic dust, Galactic synchrotron, Galactic
free-free, thermal Sunyaev-Zeldovich effect, as well as primary CMB temperature
and $\mu$-distortion anisotropies, the latter being added as correlated field.
The Constrained ILC method allows us to null the CMB temperature anisotropies
in the reconstructed $\mu$-map (and vice versa), in addition to mitigating the
contaminations from astrophysical foregrounds and instrumental noise. We
compute the cross-power spectrum between the reconstructed (CMB-free)
$\mu$-distortion map and the ($\mu$-free) CMB temperature map, after foreground
removal and component separation. Since the cross-power spectrum is
proportional to the primordial non-Gaussianity parameter, $f_{\rm NL}$, on
scales $k\simeq 740$ Mpc$^{-1}$, this allows us to derive $f_{\rm
NL}$-detection limits for the aforementioned future CMB experiments. Our
analysis shows that foregrounds degrade the theoretical detection limits (based
mostly on instrumental noise) by more than one order of magnitude, with PICO
standing the best chance at placing upper limits on scale-dependent
non-Gaussianity. We also discuss the dependence of the constraints on the
channel sensitivities and chosen bands. Like for $B$-mode polarization
measurements, extended coverage at frequencies $\nu\lesssim 40\,{\rm GHz}$ and
$\nu\gtrsim 400\,{\rm GHz}$ provides more leverage than increased channel
sensitivity.
| astro-ph.CO astro-ph.IM | correlations between cosmic microwave background cmb temperature polarization and spectral distortion anisotropies can be used as a probe of primordial nongaussianity here we perform a reconstruction of mudistortion anisotropies in the presence of galactic and extragalactic foregrounds applying the socalled constrained ilc component separation method to simulations of proposed cmb space missions pixie litebird core pico our sky simulations include galactic dust galactic synchrotron galactic freefree thermal sunyaevzeldovich effect as well as primary cmb temperature and mudistortion anisotropies the latter being added as correlated field the constrained ilc method allows us to null the cmb temperature anisotropies in the reconstructed mumap and vice versa in addition to mitigating the contaminations from astrophysical foregrounds and instrumental noise we compute the crosspower spectrum between the reconstructed cmbfree mudistortion map and the mufree cmb temperature map after foreground removal and component separation since the crosspower spectrum is proportional to the primordial nongaussianity parameter f_rm nl on scales ksimeq 740 mpc1 this allows us to derive f_rm nldetection limits for the aforementioned future cmb experiments our analysis shows that foregrounds degrade the theoretical detection limits based mostly on instrumental noise by more than one order of magnitude with pico standing the best chance at placing upper limits on scaledependent nongaussianity we also discuss the dependence of the constraints on the channel sensitivities and chosen bands like for bmode polarization measurements extended coverage at frequencies nulesssim 40rm ghz and nugtrsim 400rm ghz provides more leverage than increased channel sensitivity | [['correlations', 'between', 'cosmic', 'microwave', 'background', 'cmb', 'temperature', 'polarization', 'and', 'spectral', 'distortion', 'anisotropies', 'can', 'be', 'used', 'as', 'a', 'probe', 'of', 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1,802.10102 | The nature of luminous Lyman-alpha emitters at z~2-3: maximal dust-poor
starbursts and highly ionising AGN | Deep narrow-band surveys have revealed a large population of faint
Lyman-alpha (Lya) emitters (LAEs) in the distant Universe, but relatively
little is known about the most luminous sources ($L_{Ly\alpha}>10^{42.7}$
erg/s; $L_{Ly\alpha}>L^*_{Ly\alpha}$). Here we present the spectroscopic
follow-up of 21 luminous LAEs at z~2-3 found with panoramic narrow-band surveys
over five independent extragalactic fields (~4x10$^6$ Mpc$^{3}$ surveyed at
z~2.2 and z~3.1). We use WHT/ISIS, Keck/DEIMOS and VLT/X-SHOOTER to study these
sources using high ionisation UV lines. Luminous LAEs at z~2-3 have blue UV
slopes ($\beta=-2.0^{+0.3}_{-0.1}$), high Lya escape fractions
($50^{+20}_{-15}$%) and span five orders of magnitude in UV luminosity
($M_{UV}\approx-19$ to -24). Many (70%) show at least one high ionisation
rest-frame UV line such as CIV, NV, CIII], HeII or OIII], typically
blue-shifted by ~100-200 km/s relative to Lya. Their Lya profiles reveal a wide
variety of shapes, including significant blue-shifted components and widths
from 200 to 4000 km/s. Overall, 60+-11% appear to be AGN dominated, and at
$L_{Ly\alpha}>10^{43.3}$ erg/s and/or $M_{UV}<-21.5$ virtually all LAEs are AGN
with high ionisation parameters (log U=0.6+-0.5) and with metallicities of
~0.5-1 Zsun. Those lacking signatures of AGN (40+-11%) have lower ionisation
parameters ($\log U=-3.0^{+1.6}_{-0.9}$ and $\log\xi_{\rm ion}=25.4\pm0.2$) and
are apparently metal-poor sources likely powered by young, dust-poor "maximal"
starbursts. Our results show that luminous LAEs at z~2-3 are a diverse
population and that 2xL$^*_{Ly\alpha}$ and 2xM$_{UV}^*$ mark a sharp transition
in the nature of LAEs, from star formation dominated to AGN dominated.
| astro-ph.GA astro-ph.CO | deep narrowband surveys have revealed a large population of faint lymanalpha lya emitters laes in the distant universe but relatively little is known about the most luminous sources l_lyalpha10427 ergs l_lyalphal_lyalpha here we present the spectroscopic followup of 21 luminous laes at z23 found with panoramic narrowband surveys over five independent extragalactic fields 4x106 mpc3 surveyed at z22 and z31 we use whtisis keckdeimos and vltxshooter to study these sources using high ionisation uv lines luminous laes at z23 have blue uv slopes beta2003_01 high lya escape fractions 5020_15 and span five orders of magnitude in uv luminosity m_uvapprox19 to 24 many 70 show at least one high ionisation restframe uv line such as civ nv ciii heii or oiii typically blueshifted by 100200 kms relative to lya their lya profiles reveal a wide variety of shapes including significant blueshifted components and widths from 200 to 4000 kms overall 6011 appear to be agn dominated and at l_lyalpha10433 ergs andor m_uv215 virtually all laes are agn with high ionisation parameters log u0605 and with metallicities of 051 zsun those lacking signatures of agn 4011 have lower ionisation parameters log u3016_09 and logxi_rm ion254pm02 and are apparently metalpoor sources likely powered by young dustpoor maximal starbursts our results show that luminous laes at z23 are a diverse population and that 2xl_lyalpha and 2xm_uv mark a sharp transition in the nature of laes from star formation dominated to agn dominated | [['deep', 'narrowband', 'surveys', 'have', 'revealed', 'a', 'large', 'population', 'of', 'faint', 'lymanalpha', 'lya', 'emitters', 'laes', 'in', 'the', 'distant', 'universe', 'but', 'relatively', 'little', 'is', 'known', 'about', 'the', 'most', 'luminous', 'sources', 'l_lyalpha10427', 'ergs', 'l_lyalphal_lyalpha', 'here', 'we', 'present', 'the', 'spectroscopic', 'followup', 'of', '21', 'luminous', 'laes', 'at', 'z23', 'found', 'with', 'panoramic', 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1,802.10103 | The Holographic Shape of Entanglement and Einstein's Equations | We study shape-deformations of the entanglement entropy and the modular
Hamiltonian for an arbitrary subregion and state (with a smooth dual geometry)
in a holographic conformal field theory. More precisely, we study a
double-deformation comprising of a shape deformation together with a state
deformation, where the latter corresponds to a small change in the bulk
geometry. Using a purely gravitational identity from the Hollands-Iyer-Wald
formalism together with the assumption of equality between bulk and boundary
modular flows for the original, undeformed state and subregion, we rewrite a
purely CFT expression for this double deformation of the entropy in terms of
bulk gravitational variables and show that it precisely agrees with the
Ryu-Takayanagi formula including quantum corrections. As a corollary, this
gives a novel, CFT derivation of the JLMS formula for arbitrary subregions in
the vacuum, without using the replica trick. Finally, we use our results to
give an argument that if a general, asymptotically AdS spacetime satisfies the
Ryu-Takayanagi formula for arbitrary subregions, then it must necessarily
satisfy the non-linear Einstein equation.
| hep-th | we study shapedeformations of the entanglement entropy and the modular hamiltonian for an arbitrary subregion and state with a smooth dual geometry in a holographic conformal field theory more precisely we study a doubledeformation comprising of a shape deformation together with a state deformation where the latter corresponds to a small change in the bulk geometry using a purely gravitational identity from the hollandsiyerwald formalism together with the assumption of equality between bulk and boundary modular flows for the original undeformed state and subregion we rewrite a purely cft expression for this double deformation of the entropy in terms of bulk gravitational variables and show that it precisely agrees with the ryutakayanagi formula including quantum corrections as a corollary this gives a novel cft derivation of the jlms formula for arbitrary subregions in the vacuum without using the replica trick finally we use our results to give an argument that if a general asymptotically ads spacetime satisfies the ryutakayanagi formula for arbitrary subregions then it must necessarily satisfy the nonlinear einstein equation | [['we', 'study', 'shapedeformations', 'of', 'the', 'entanglement', 'entropy', 'and', 'the', 'modular', 'hamiltonian', 'for', 'an', 'arbitrary', 'subregion', 'and', 'state', 'with', 'a', 'smooth', 'dual', 'geometry', 'in', 'a', 'holographic', 'conformal', 'field', 'theory', 'more', 'precisely', 'we', 'study', 'a', 'doubledeformation', 'comprising', 'of', 'a', 'shape', 'deformation', 'together', 'with', 'a', 'state', 'deformation', 'where', 'the', 'latter', 'corresponds', 'to', 'a', 'small', 'change', 'in', 'the', 'bulk', 'geometry', 'using', 'a', 'purely', 'gravitational', 'identity', 'from', 'the', 'hollandsiyerwald', 'formalism', 'together', 'with', 'the', 'assumption', 'of', 'equality', 'between', 'bulk', 'and', 'boundary', 'modular', 'flows', 'for', 'the', 'original', 'undeformed', 'state', 'and', 'subregion', 'we', 'rewrite', 'a', 'purely', 'cft', 'expression', 'for', 'this', 'double', 'deformation', 'of', 'the', 'entropy', 'in', 'terms', 'of', 'bulk', 'gravitational', 'variables', 'and', 'show', 'that', 'it', 'precisely', 'agrees', 'with', 'the', 'ryutakayanagi', 'formula', 'including', 'quantum', 'corrections', 'as', 'a', 'corollary', 'this', 'gives', 'a', 'novel', 'cft', 'derivation', 'of', 'the', 'jlms', 'formula', 'for', 'arbitrary', 'subregions', 'in', 'the', 'vacuum', 'without', 'using', 'the', 'replica', 'trick', 'finally', 'we', 'use', 'our', 'results', 'to', 'give', 'an', 'argument', 'that', 'if', 'a', 'general', 'asymptotically', 'ads', 'spacetime', 'satisfies', 'the', 'ryutakayanagi', 'formula', 'for', 'arbitrary', 'subregions', 'then', 'it', 'must', 'necessarily', 'satisfy', 'the', 'nonlinear', 'einstein', 'equation']] | [-0.11625503617429764, 0.10104125634420624, -0.159225744718807, 0.057875750343915976, -0.07282776890609127, -0.15122260874930835, 0.0001490990791095079, 0.2704128739327611, -0.21700828025922092, -0.23899372300607036, 0.08277824934373593, -0.26000457786067704, -0.16658262034586063, 0.16980140571917832, -0.08353875715908259, 0.037909966852163246, 0.027309629218873276, 0.09673338169617766, -0.14556619716524394, -0.19204581991187986, 0.36414412933969376, 0.013678450096045902, 0.27220764618984167, 0.05484486192178268, 0.12243862044804636, 0.051283635469098414, 0.02685559923297687, 0.06717812302990778, -0.18291511126015866, 0.1385792701163456, 0.21903006386111032, 0.08623568194549112, 0.17751772390932022, -0.43180090969307183, -0.20860251784049108, 0.07318394813003272, 0.09507742592067452, 0.15777200235042876, -0.005279965205245497, -0.25608986608970624, 0.05302801093406226, -0.19699198820424327, -0.18430071772136808, -0.0706657809315569, 0.028572760641536285, -0.08477807543433365, -0.26775384316022494, 0.0972712446064771, 0.06121812764549705, 0.02547557483642147, -0.11151924328988738, 0.0020463524845059544, -0.0442029026449939, 0.08915760436166938, 0.0418852240772995, 0.06870256171330325, 0.11261067451832034, -0.14097369245953373, -0.0716741475698224, 0.3203318579530222, -0.06708596584272775, -0.26290660087754897, 0.11937077531106109, -0.1377328149643699, -0.13266509751232683, 0.08638237475709626, 0.0724742633770027, 0.154702883596758, -0.12422748619811774, 0.15406816867324827, -0.05989667717243418, 0.14091493385518797, 0.08439126387018071, 0.03792838862795416, 0.20813107429369843, 0.04510497347453124, 0.0574875867459923, 0.24863956909290563, -0.015462293838441494, -0.128605457921044, -0.4310075419365302, -0.22167977626481009, -0.17893053974388662, 0.10810527177913302, -0.16700304435666294, -0.2050953943684653, 0.3530054993640918, 0.07000161198092854, 0.19299192789435035, 0.11246940763612118, 0.2543977373582724, 0.1328587669330875, 0.0679088177103632, 0.07998260005257374, 0.2145981965255896, 0.16985568340272594, 0.08172406530567064, -0.2354389683167125, -0.02779559574100966, 0.15048128441417005] |
1,802.10104 | From gauge to higher gauge models of topological phases | We consider exactly solvable models in (3+1)d whose ground states are
described by topological lattice gauge theories. Using simplicial arguments, we
emphasize how the consistency condition of the unitary map performing a local
change of triangulation is equivalent to the coherence relation of the
pentagonator 2-morphism of a monoidal 2-category. By weakening some axioms of
such 2-category, we obtain a cohomological model whose underlying 1-category is
a 2-group. Topological models from 2-groups together with their lattice
realization are then studied from a higher gauge theory point of view. Symmetry
protected topological phases protected by higher symmetry structures are
explicitly constructed, and the gauging procedure which yields the
corresponding topological gauge theories is discussed in detail. We finally
study the correspondence between symmetry protected topological phases and 't
Hooft anomalies in the context of these higher group symmetries.
| cond-mat.str-el hep-th | we consider exactly solvable models in 31d whose ground states are described by topological lattice gauge theories using simplicial arguments we emphasize how the consistency condition of the unitary map performing a local change of triangulation is equivalent to the coherence relation of the pentagonator 2morphism of a monoidal 2category by weakening some axioms of such 2category we obtain a cohomological model whose underlying 1category is a 2group topological models from 2groups together with their lattice realization are then studied from a higher gauge theory point of view symmetry protected topological phases protected by higher symmetry structures are explicitly constructed and the gauging procedure which yields the corresponding topological gauge theories is discussed in detail we finally study the correspondence between symmetry protected topological phases and t hooft anomalies in the context of these higher group symmetries | [['we', 'consider', 'exactly', 'solvable', 'models', 'in', '31d', 'whose', 'ground', 'states', 'are', 'described', 'by', 'topological', 'lattice', 'gauge', 'theories', 'using', 'simplicial', 'arguments', 'we', 'emphasize', 'how', 'the', 'consistency', 'condition', 'of', 'the', 'unitary', 'map', 'performing', 'a', 'local', 'change', 'of', 'triangulation', 'is', 'equivalent', 'to', 'the', 'coherence', 'relation', 'of', 'the', 'pentagonator', '2morphism', 'of', 'a', 'monoidal', '2category', 'by', 'weakening', 'some', 'axioms', 'of', 'such', '2category', 'we', 'obtain', 'a', 'cohomological', 'model', 'whose', 'underlying', '1category', 'is', 'a', '2group', 'topological', 'models', 'from', '2groups', 'together', 'with', 'their', 'lattice', 'realization', 'are', 'then', 'studied', 'from', 'a', 'higher', 'gauge', 'theory', 'point', 'of', 'view', 'symmetry', 'protected', 'topological', 'phases', 'protected', 'by', 'higher', 'symmetry', 'structures', 'are', 'explicitly', 'constructed', 'and', 'the', 'gauging', 'procedure', 'which', 'yields', 'the', 'corresponding', 'topological', 'gauge', 'theories', 'is', 'discussed', 'in', 'detail', 'we', 'finally', 'study', 'the', 'correspondence', 'between', 'symmetry', 'protected', 'topological', 'phases', 'and', 't', 'hooft', 'anomalies', 'in', 'the', 'context', 'of', 'these', 'higher', 'group', 'symmetries']] | [-0.18330271317801602, 0.20346695202084342, -0.08557382145954762, 0.10652495978095378, -0.09069896848557298, -0.168905327175333, 0.04282432018782642, 0.36034513827796805, -0.2780453135286841, -0.26578637233058755, 0.0782565062168835, -0.24804266850525677, -0.18109501747633605, 0.06512710532029707, -0.07952078246778589, 0.014969461719053523, -0.0357508951873409, 0.046006846875089276, -0.15819297287174883, -0.24723417874637937, 0.3635421165176119, -0.020653193131746614, 0.3048871771624202, 0.02171006631653975, 0.0832440911908634, -0.028293786251143663, 0.0017394658883430941, 0.03608843493480783, -0.1412778916351004, 0.09661870425513959, 0.23621246115689085, 0.03426390489381875, 0.08790854468551355, -0.4325811027083546, -0.1954348755397779, 0.08394649101640372, 0.08156737675616409, 0.1320265641749275, -0.010692610898438622, -0.3816207805853885, 0.12165935592801201, -0.1988893559832564, -0.13309520225790467, -0.12715869271607302, -0.010805568808470578, -0.09796805929919869, -0.18145918243509881, 0.032145922198919034, 0.07140919514109983, 0.16738124705751248, -0.0637387426202836, -0.018848597159376368, -0.14571480010293753, 0.08623844060553786, 0.02924409875413403, 0.01742458645672099, 0.09784161354165168, -0.16615327382597195, -0.19287951755284347, 0.44027478732716513, -0.022029157942383523, -0.2111961555424119, 0.16567906574688523, -0.09855877837488901, -0.19753204652806744, 0.08780665460867834, 0.033098892413203004, 0.11860008499078344, -0.08056278355583987, 0.19296435352252422, -0.0864634600618635, 0.08108829174927772, 0.04717411855167216, 0.07721857110300334, 0.22771854537559727, 0.0894457575152902, 0.060755879988017326, 0.1634975089075263, 0.051520156917189634, -0.10879346487619092, -0.4052086642340702, -0.13748360994641723, -0.156505900893963, 0.08656644087408066, -0.08452325449166785, -0.1337262921151705, 0.4053942247530144, 0.14826680670033537, 0.17638347695858958, 0.07017648735456854, 0.1708391674054677, 0.10894127959823784, 0.07080359811815844, -0.0008069854477927199, 0.15286526129249764, 0.2160032746495049, -0.016851645596462357, -0.1895737873757539, -0.058671747766578956, 0.22758330219007536] |
1,802.10105 | Alignment between satellite and central galaxies in the SDSS DR7:
dependence on large-scale environment | The alignment between satellites and central galaxies has been studied in
detail both in observational and theoretical works. The widely accepted fact is
that the satellites preferentially reside along the major axis of their central
galaxy. However, the origin and large-scale environment dependence of this
alignment are still unknown. In an attempt to figure out those, we use data
constructed from SDSS DR7 to investigate the large-scale environmental
dependence of this alignment with emphasis on examining the alignments'
dependence on the colour of the central galaxy. We find a very strong
large-scale environmental dependence of the satellite-central alignment in
groups with blue centrals. Satellites of blue centrals in knots are
preferentially located perpendicular to the major axis of the centrals, and the
alignment angle decreases with environment namely when going from knots to
voids. The alignment angle strongly depend on the ${}^{0.1}(g-r)$ colour of
centrals. We suggest that the satellite-central alignment is the result of a
competition between satellite accretion within large scale-structure and galaxy
evolution inside host haloes. For groups containing red central galaxies, the
satellite-central alignment is mainly determined by the evolution effect, while
for blue central dominated groups, the effect of large-scale structure plays a
more important role, especially in knots. Our results provide an explanation
for how the satellite-central alignment forms within different large-scale
environments. The perpendicular case in groups and knots with blue centrals may
also provide insight into understanding similar polar arrangements such the
formation of the Milky Way and Centaurus A's satellite system.
| astro-ph.GA astro-ph.CO | the alignment between satellites and central galaxies has been studied in detail both in observational and theoretical works the widely accepted fact is that the satellites preferentially reside along the major axis of their central galaxy however the origin and largescale environment dependence of this alignment are still unknown in an attempt to figure out those we use data constructed from sdss dr7 to investigate the largescale environmental dependence of this alignment with emphasis on examining the alignments dependence on the colour of the central galaxy we find a very strong largescale environmental dependence of the satellitecentral alignment in groups with blue centrals satellites of blue centrals in knots are preferentially located perpendicular to the major axis of the centrals and the alignment angle decreases with environment namely when going from knots to voids the alignment angle strongly depend on the 01gr colour of centrals we suggest that the satellitecentral alignment is the result of a competition between satellite accretion within large scalestructure and galaxy evolution inside host haloes for groups containing red central galaxies the satellitecentral alignment is mainly determined by the evolution effect while for blue central dominated groups the effect of largescale structure plays a more important role especially in knots our results provide an explanation for how the satellitecentral alignment forms within different largescale environments the perpendicular case in groups and knots with blue centrals may also provide insight into understanding similar polar arrangements such the formation of the milky way and centaurus as satellite system | [['the', 'alignment', 'between', 'satellites', 'and', 'central', 'galaxies', 'has', 'been', 'studied', 'in', 'detail', 'both', 'in', 'observational', 'and', 'theoretical', 'works', 'the', 'widely', 'accepted', 'fact', 'is', 'that', 'the', 'satellites', 'preferentially', 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1,802.10106 | The Cocoon Shocks of Cygnus A: Pressures and Their Implications for the
Jets and Lobes | We use 2.0 Msec of Chandra observations to investigate the cocoon shocks of
Cygnus A and some implications for its lobes and jet. Measured shock Mach
numbers vary in the range 1.18-1.66 around the cocoon. We estimate a total
outburst energy of $\simeq 4.7\times10^{60}\rm\ erg$, with an age of $\simeq 2
\times 10^{7}\rm\ yr$. The average postshock pressure is found to be $8.6 \pm
0.3 \times 10^{-10}\rm\ erg\ cm^{-3}$, which agrees with the average pressure
of the thin rim of compressed gas between the radio lobes and shocks, as
determined from X-ray spectra. However, average rim pressures are found to be
lower in the western lobe than in the eastern lobe by $\simeq 20\%$. Pressure
estimates for hotspots A and D from synchrotron self-Compton models imply that
each jet exerts a ram pressure $\gtrsim$ 3 times its static pressure,
consistent with the positions of the hotspots moving about on the cocoon shock
over time. A steady, one-dimensional flow model is used to estimate jet
properties, finding mildly relativistic flow speeds within the allowed
parameter range. Models in which the jet carries a negligible flux of rest mass
are consistent with with the observed properties of the jets and hotspots. This
favors the jets being light, implying that the kinetic power and momentum flux
are carried primarily by the internal energy of the jet plasma rather than by
its rest mass.
| astro-ph.HE | we use 20 msec of chandra observations to investigate the cocoon shocks of cygnus a and some implications for its lobes and jet measured shock mach numbers vary in the range 118166 around the cocoon we estimate a total outburst energy of simeq 47times1060rm erg with an age of simeq 2 times 107rm yr the average postshock pressure is found to be 86 pm 03 times 1010rm erg cm3 which agrees with the average pressure of the thin rim of compressed gas between the radio lobes and shocks as determined from xray spectra however average rim pressures are found to be lower in the western lobe than in the eastern lobe by simeq 20 pressure estimates for hotspots a and d from synchrotron selfcompton models imply that each jet exerts a ram pressure gtrsim 3 times its static pressure consistent with the positions of the hotspots moving about on the cocoon shock over time a steady onedimensional flow model is used to estimate jet properties finding mildly relativistic flow speeds within the allowed parameter range models in which the jet carries a negligible flux of rest mass are consistent with with the observed properties of the jets and hotspots this favors the jets being light implying that the kinetic power and momentum flux are carried primarily by the internal energy of the jet plasma rather than by its rest mass | [['we', 'use', '20', 'msec', 'of', 'chandra', 'observations', 'to', 'investigate', 'the', 'cocoon', 'shocks', 'of', 'cygnus', 'a', 'and', 'some', 'implications', 'for', 'its', 'lobes', 'and', 'jet', 'measured', 'shock', 'mach', 'numbers', 'vary', 'in', 'the', 'range', '118166', 'around', 'the', 'cocoon', 'we', 'estimate', 'a', 'total', 'outburst', 'energy', 'of', 'simeq', '47times1060rm', 'erg', 'with', 'an', 'age', 'of', 'simeq', '2', 'times', '107rm', 'yr', 'the', 'average', 'postshock', 'pressure', 'is', 'found', 'to', 'be', '86', 'pm', '03', 'times', '1010rm', 'erg', 'cm3', 'which', 'agrees', 'with', 'the', 'average', 'pressure', 'of', 'the', 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1,802.10107 | Dominance phenomena: mutation, scattering and cluster algebras | An exchange matrix $B$ dominates an exchange matrix $B'$ if the signs of
corresponding entries weakly agree, with the entry of $B$ always having weakly
greater absolute value. When $B$ dominates $B'$, interesting things happen in
many cases (but not always): the identity map between the associated
mutation-linear structures is often mutation-linear; the mutation fan for $B$
often refines the mutation fan for $B'$; the scattering (diagram) fan for $B$
often refines the scattering fan for $B'$; and there is often an injective
homomorphism from the principal-coefficients cluster algebra for $B'$ to the
principal-coefficients cluster algebra for $B$, preserving $\mathbf{g}$-vectors
and sending the set of cluster variables for $B'$ (or an analogous larger set)
into the set of cluster variables for $B$ (or an analogous larger set). The
scope of the description "often" is not the same in all four contexts and is
not settled in any of them. In this paper, we prove theorems that provide
examples of these dominance phenomena.
| math.CO math.AC math.RA math.RT | an exchange matrix b dominates an exchange matrix b if the signs of corresponding entries weakly agree with the entry of b always having weakly greater absolute value when b dominates b interesting things happen in many cases but not always the identity map between the associated mutationlinear structures is often mutationlinear the mutation fan for b often refines the mutation fan for b the scattering diagram fan for b often refines the scattering fan for b and there is often an injective homomorphism from the principalcoefficients cluster algebra for b to the principalcoefficients cluster algebra for b preserving mathbfgvectors and sending the set of cluster variables for b or an analogous larger set into the set of cluster variables for b or an analogous larger set the scope of the description often is not the same in all four contexts and is not settled in any of them in this paper we prove theorems that provide examples of these dominance phenomena | [['an', 'exchange', 'matrix', 'b', 'dominates', 'an', 'exchange', 'matrix', 'b', 'if', 'the', 'signs', 'of', 'corresponding', 'entries', 'weakly', 'agree', 'with', 'the', 'entry', 'of', 'b', 'always', 'having', 'weakly', 'greater', 'absolute', 'value', 'when', 'b', 'dominates', 'b', 'interesting', 'things', 'happen', 'in', 'many', 'cases', 'but', 'not', 'always', 'the', 'identity', 'map', 'between', 'the', 'associated', 'mutationlinear', 'structures', 'is', 'often', 'mutationlinear', 'the', 'mutation', 'fan', 'for', 'b', 'often', 'refines', 'the', 'mutation', 'fan', 'for', 'b', 'the', 'scattering', 'diagram', 'fan', 'for', 'b', 'often', 'refines', 'the', 'scattering', 'fan', 'for', 'b', 'and', 'there', 'is', 'often', 'an', 'injective', 'homomorphism', 'from', 'the', 'principalcoefficients', 'cluster', 'algebra', 'for', 'b', 'to', 'the', 'principalcoefficients', 'cluster', 'algebra', 'for', 'b', 'preserving', 'mathbfgvectors', 'and', 'sending', 'the', 'set', 'of', 'cluster', 'variables', 'for', 'b', 'or', 'an', 'analogous', 'larger', 'set', 'into', 'the', 'set', 'of', 'cluster', 'variables', 'for', 'b', 'or', 'an', 'analogous', 'larger', 'set', 'the', 'scope', 'of', 'the', 'description', 'often', 'is', 'not', 'the', 'same', 'in', 'all', 'four', 'contexts', 'and', 'is', 'not', 'settled', 'in', 'any', 'of', 'them', 'in', 'this', 'paper', 'we', 'prove', 'theorems', 'that', 'provide', 'examples', 'of', 'these', 'dominance', 'phenomena']] | [-0.109862229898863, 0.11757626175285622, -0.009302144421963022, 0.055872109723713946, -0.05443838721839711, -0.16222784408601001, 0.06827402674025507, 0.3242137020570226, -0.3257095660257619, -0.23379104336490855, 0.09135003268020228, -0.26287531107918766, -0.12449109947774559, 0.18063083836750593, -0.0719081501418259, -0.06308373206411488, 0.07000850629992783, 0.10360868584120908, -0.023645569836662616, -0.24534764859708957, 0.3375593848177232, -0.008516633231192828, 0.21514569827122615, -0.00906455673102755, 0.04401501571119297, 0.05297402756405063, -0.05583422039780998, 0.030856301109531616, -0.10851371006160662, 0.06516590392857324, 0.20817300799244548, 0.16474018705048366, 0.23130277772725094, -0.34640996626694687, -0.09145568766107318, 0.1724652804317884, 0.15177372999605723, 0.04423872890183702, 0.010047475596365985, -0.2411229188204743, 0.12052789337321883, -0.16172983485303122, -0.0980425355839543, -0.05461325345095247, 0.1255314153924701, -0.016299782152054833, -0.3230768971669022, 0.04989264857722446, 0.11970010294462555, 0.09237181805656292, -0.05781016247783555, -0.16431801544094923, -0.03550415869685821, 0.1378131426166874, 0.008632351228152401, 0.08070687308500055, 0.11110678496479523, -0.15001127249124693, -0.08956783167959656, 0.3786738260183483, -0.0011479798611617297, -0.18173264630604535, 0.2387182328675408, -0.19144701889017596, -0.1352405487879878, 0.14503311020525872, 0.07307184749515727, 0.07348427668621298, -0.13136908576607312, 0.13663486102486785, -0.10645125126466155, 0.10144820408895612, 0.07112607983290217, -0.002354816798469983, 0.18332355309976264, 0.056909497750166335, 0.09957036891319149, 0.08574576377286576, -0.033469311160115464, -0.05077711268531857, -0.3328959059144836, -0.15485300258442294, -0.14266606164819678, 0.06146662938872396, -0.08492527398893798, -0.19698433523299172, 0.3265434589819051, 0.09530888549052179, 0.24087039298610763, 0.01251705752511043, 0.22296057594940066, 0.09166420802102948, 0.08163820600639156, 0.09083594103576616, 0.17891223032202105, 0.17710980226984246, 0.051883364302921106, -0.16388510319666239, 0.0809773591638077, 0.08713081614114344] |
1,802.10108 | Fracton topological order from Higgs and partial confinement mechanisms
of rank-two gauge theory | Fractons are gapped point-like excitations in $d=3$ topological ordered
phases whose motion is constrained. They have been discovered in several gapped
models but a unifying physical mechanism for generating them is still missing.
It has been noticed that in symmetric-tensor ${\rm U}(1)$ gauge theories,
charges are fractons and cannot move freely due to, for example, the
conservation of not only the charge but also the dipole moment. To connect
these theories with fully gapped fracton models, we study Higgs and partial
confinement mechanisms in rank-2 symmetric-tensor gauge theories, where charges
or magnetic excitations, respectively, are condensed. Specifically, we describe
two different routes from the rank-2 ${\rm U}(1)$ scalar charge theory to the
X-cube fracton topological order, finding that a combination of Higgs and
partial confinement mechanisms is necessary to obtain the fully gapped fracton
model. On the other hand, the rank-2 $\mathbb{Z}_2$ scalar charge theory, which
is obtained from the former theory upon condensing charge-2 matter, is
equivalent to four copies of the $d=3$ toric code and does not support fracton
excitations. We also explain how the checkerboard fracton model can be viewed
as a rank-2 $\mathbb{Z}_2$ gauge theory with two different Gauss' law
constraints on different lattice sites.
| cond-mat.str-el | fractons are gapped pointlike excitations in d3 topological ordered phases whose motion is constrained they have been discovered in several gapped models but a unifying physical mechanism for generating them is still missing it has been noticed that in symmetrictensor rm u1 gauge theories charges are fractons and cannot move freely due to for example the conservation of not only the charge but also the dipole moment to connect these theories with fully gapped fracton models we study higgs and partial confinement mechanisms in rank2 symmetrictensor gauge theories where charges or magnetic excitations respectively are condensed specifically we describe two different routes from the rank2 rm u1 scalar charge theory to the xcube fracton topological order finding that a combination of higgs and partial confinement mechanisms is necessary to obtain the fully gapped fracton model on the other hand the rank2 mathbbz_2 scalar charge theory which is obtained from the former theory upon condensing charge2 matter is equivalent to four copies of the d3 toric code and does not support fracton excitations we also explain how the checkerboard fracton model can be viewed as a rank2 mathbbz_2 gauge theory with two different gauss law constraints on different lattice sites | [['fractons', 'are', 'gapped', 'pointlike', 'excitations', 'in', 'd3', 'topological', 'ordered', 'phases', 'whose', 'motion', 'is', 'constrained', 'they', 'have', 'been', 'discovered', 'in', 'several', 'gapped', 'models', 'but', 'a', 'unifying', 'physical', 'mechanism', 'for', 'generating', 'them', 'is', 'still', 'missing', 'it', 'has', 'been', 'noticed', 'that', 'in', 'symmetrictensor', 'rm', 'u1', 'gauge', 'theories', 'charges', 'are', 'fractons', 'and', 'can', 'not', 'move', 'freely', 'due', 'to', 'for', 'example', 'the', 'conservation', 'of', 'not', 'only', 'the', 'charge', 'but', 'also', 'the', 'dipole', 'moment', 'to', 'connect', 'these', 'theories', 'with', 'fully', 'gapped', 'fracton', 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1,802.10109 | Multi-peaked signatures of primordial gravitational waves from
multi-step electroweak phase transition | The first-order electroweak phase transition in the early universe could
occur in multiple steps leading to specific multi-peaked signatures in the
primordial gravitational wave (GW) spectrum. We argue that these signatures are
generic phenomena in multi-scalar extensions of the Standard Model. In a simple
example of such an extension, we have studied the emergence of reoccurring and
nested vacuum bubble configurations and their role in the formation of multiple
peaks in the GW spectrum. The conditions for potential detectability of these
features by the forthcoming generation of interferometers have been studied.
| hep-ph gr-qc hep-th | the firstorder electroweak phase transition in the early universe could occur in multiple steps leading to specific multipeaked signatures in the primordial gravitational wave gw spectrum we argue that these signatures are generic phenomena in multiscalar extensions of the standard model in a simple example of such an extension we have studied the emergence of reoccurring and nested vacuum bubble configurations and their role in the formation of multiple peaks in the gw spectrum the conditions for potential detectability of these features by the forthcoming generation of interferometers have been studied | [['the', 'firstorder', 'electroweak', 'phase', 'transition', 'in', 'the', 'early', 'universe', 'could', 'occur', 'in', 'multiple', 'steps', 'leading', 'to', 'specific', 'multipeaked', 'signatures', 'in', 'the', 'primordial', 'gravitational', 'wave', 'gw', 'spectrum', 'we', 'argue', 'that', 'these', 'signatures', 'are', 'generic', 'phenomena', 'in', 'multiscalar', 'extensions', 'of', 'the', 'standard', 'model', 'in', 'a', 'simple', 'example', 'of', 'such', 'an', 'extension', 'we', 'have', 'studied', 'the', 'emergence', 'of', 'reoccurring', 'and', 'nested', 'vacuum', 'bubble', 'configurations', 'and', 'their', 'role', 'in', 'the', 'formation', 'of', 'multiple', 'peaks', 'in', 'the', 'gw', 'spectrum', 'the', 'conditions', 'for', 'potential', 'detectability', 'of', 'these', 'features', 'by', 'the', 'forthcoming', 'generation', 'of', 'interferometers', 'have', 'been', 'studied']] | [-0.17914574218729695, 0.15506762120464004, -0.07778546245318356, 0.14465240591748074, -0.03479942044621886, -0.03934426840578953, -0.03936440843044893, 0.35925194204549543, -0.22793509244181953, -0.28006523497566416, 0.0902001787818825, -0.2457245970144868, -0.17091594892681913, 0.17763794998249427, 0.046948673850907896, 0.032254425465937826, 0.020180351703407262, 0.007944472819812351, -0.04919172311969265, -0.199450464903858, 0.3351415405868665, 0.0824675465330154, 0.22934247807159527, 0.034197613274535306, -0.008966262071076167, -0.053900059358636426, -0.028215706642655717, -0.011063431942282797, -0.11463842401576835, 0.02538186284089154, 0.24027579494209572, 0.15097832693820717, 0.23048445336766296, -0.4735602739236348, -0.27735338337555693, 0.14275199569669644, 0.12368584008232414, 0.15753588810112779, -0.08257621779505696, -0.3019695947008146, 0.06168987064693983, -0.19987383603558437, -0.1455396560511992, -0.05161816025009522, -0.0033055048181347877, 0.00840352072411186, -0.21608841636187429, 0.08280840730627201, 0.03439046630820075, 0.011329357650458486, -0.06005478510633111, -0.05582179507793306, -0.018480822774018725, 0.07544484218214076, 0.03206987914265962, -0.0250029727499318, 0.11015518611376328, -0.17345126004439299, -0.16833507490170363, 0.39796960382507396, -0.1265332761967739, -0.08911847436268415, 0.19770467524918225, -0.18933462878627763, -0.190405207189762, 0.14417528696000004, 0.16738873030376303, 0.10479379636632115, -0.11179416530233409, 0.07418510673828628, 0.05494066334990298, 0.087598284271515, 0.10955421452072787, 0.10806579900148151, 0.3320044674859433, 0.15019909736628717, -0.01570699739034523, 0.11452722145598843, -0.12068289264545336, -0.09913624331846342, -0.3304795626727455, -0.10769945632789162, -0.11888329353654287, -0.012089321450720501, -0.07859676786164937, -0.1917802818160463, 0.44802721810864876, 0.15351330136619942, 0.19404102539500365, -0.040613897676978795, 0.24201211315364793, 0.11774178349366923, 0.0696986118346903, -0.01083860708820214, 0.31261267399435844, 0.09108880250062282, 0.10201727584577523, -0.2042636374154916, 0.04316325795806044, 0.026273513417486308] |
1,802.1011 | Collective excitations in Weyl semimetals in the hydrodynamic regime | The spectrum of collective excitations in Weyl materials is studied by using
consistent hydrodynamics. The corresponding framework includes the vortical and
chiral anomaly effects, as well as the dependence on the separations between
the Weyl nodes in energy $b_0$ and momentum $\mathbf{b}$. The latter are
introduced via the Chern-Simons contributions to the electric current and
charge densities in Maxwell's equations. It is found that, even in the absence
of a background magnetic field, certain collective excitations (e.g. the
helicon-like modes and the anomalous Hall waves) are strongly affected by the
chiral shift $\mathbf{b}$. In a background magnetic field, the existence of the
distinctive longitudinal and transverse anomalous Hall waves with a linear
dispersion relation is predicted. They originate from the oscillations of the
electric charge density and electromagnetic fields, in which different
components of the fields are connected via the anomalous Hall effect in Weyl
semimetals.
| cond-mat.str-el hep-th | the spectrum of collective excitations in weyl materials is studied by using consistent hydrodynamics the corresponding framework includes the vortical and chiral anomaly effects as well as the dependence on the separations between the weyl nodes in energy b_0 and momentum mathbfb the latter are introduced via the chernsimons contributions to the electric current and charge densities in maxwells equations it is found that even in the absence of a background magnetic field certain collective excitations eg the heliconlike modes and the anomalous hall waves are strongly affected by the chiral shift mathbfb in a background magnetic field the existence of the distinctive longitudinal and transverse anomalous hall waves with a linear dispersion relation is predicted they originate from the oscillations of the electric charge density and electromagnetic fields in which different components of the fields are connected via the anomalous hall effect in weyl semimetals | [['the', 'spectrum', 'of', 'collective', 'excitations', 'in', 'weyl', 'materials', 'is', 'studied', 'by', 'using', 'consistent', 'hydrodynamics', 'the', 'corresponding', 'framework', 'includes', 'the', 'vortical', 'and', 'chiral', 'anomaly', 'effects', 'as', 'well', 'as', 'the', 'dependence', 'on', 'the', 'separations', 'between', 'the', 'weyl', 'nodes', 'in', 'energy', 'b_0', 'and', 'momentum', 'mathbfb', 'the', 'latter', 'are', 'introduced', 'via', 'the', 'chernsimons', 'contributions', 'to', 'the', 'electric', 'current', 'and', 'charge', 'densities', 'in', 'maxwells', 'equations', 'it', 'is', 'found', 'that', 'even', 'in', 'the', 'absence', 'of', 'a', 'background', 'magnetic', 'field', 'certain', 'collective', 'excitations', 'eg', 'the', 'heliconlike', 'modes', 'and', 'the', 'anomalous', 'hall', 'waves', 'are', 'strongly', 'affected', 'by', 'the', 'chiral', 'shift', 'mathbfb', 'in', 'a', 'background', 'magnetic', 'field', 'the', 'existence', 'of', 'the', 'distinctive', 'longitudinal', 'and', 'transverse', 'anomalous', 'hall', 'waves', 'with', 'a', 'linear', 'dispersion', 'relation', 'is', 'predicted', 'they', 'originate', 'from', 'the', 'oscillations', 'of', 'the', 'electric', 'charge', 'density', 'and', 'electromagnetic', 'fields', 'in', 'which', 'different', 'components', 'of', 'the', 'fields', 'are', 'connected', 'via', 'the', 'anomalous', 'hall', 'effect', 'in', 'weyl', 'semimetals']] | [-0.22814573703076818, 0.27602763557726323, -0.04209064341206425, 0.05182889330136622, -0.08913095156373135, -0.07297555536095952, -0.03903217307966331, 0.30359488335149043, -0.24459014206739335, -0.2930312916122634, 0.008481800255108753, -0.3026604946831177, -0.14764732382549295, 0.15625735349182424, 0.054951714313235776, 0.0010924212152844874, -0.07178921748016928, 0.05148017893962819, -0.053932000734393706, -0.13595199706675162, 0.34026936309990186, 0.014275801685991987, 0.3334933499837744, 0.05419027453352665, 0.08203408561390022, 0.0014114702714542891, 0.007042213998221118, 0.10550342892328726, -0.06536079591640938, 0.026884647025245016, 0.2073187554945591, -0.0845131676796631, 0.14813354096279063, -0.44501304946325976, -0.1946863645495012, 0.026189855910066902, 0.13120104402558605, 0.1370313697775569, -0.057470760251202714, -0.3286403726529458, 0.030509443966479137, -0.13907215831608608, -0.12764178918401614, -0.0732936993016508, 0.022999083011507476, 0.015632873685259757, -0.2476795041837312, 0.1688692923506786, 0.06428515655390019, 0.06252398287299378, -0.09366834289876037, -0.11210945721330313, -0.09608470000615664, 0.08033519837812617, 0.1307426991342599, 0.035810577891895484, 0.16889132798874174, -0.21176217823642596, -0.14623200803320727, 0.38564593696581395, -0.08782022837549448, -0.19737042330590815, 0.144570277446624, -0.2209693621715595, -0.05714861140907582, 0.16295186526880695, 0.15590548920686004, 0.0860812412271806, -0.11561105935673775, 0.11780357881336762, -0.017796358797731327, 0.06090326971245994, 0.03831182791337628, 0.07240014091005613, 0.29891818014840627, 0.07272684710614126, 0.016959303910874135, 0.09201436837942435, -0.11476053714848541, -0.016274885409351052, -0.32326545433366094, -0.13511819935500108, -0.19491772183120765, 0.04472701912103542, -0.047841567006704784, -0.18764423966279317, 0.4336661632654482, 0.15318364129177944, 0.17144972496376984, -0.06024649965914031, 0.2824579396686549, 0.16777119475802213, 0.11741100856070888, 0.0948709498416504, 0.29534304784249577, 0.24365284433588386, 0.13915984515293406, -0.3173247220829643, -0.006814672936010977, 0.04311983702736425] |
1,802.10111 | Inner Structure of CME Shock Fronts Revealed by the Electromotive Force
and Turbulent Transport Coefficients in Helios-2 Observations | Electromotive force is an essential quantity in dynamo theory. During a
coronal mass ejection (CME), magnetic helicity gets decoupled from the Sun and
advected into the heliosphere with the solar wind. Eventually, a heliospheric
magnetic transient event might pass by a spacecraft, such as the Helios space
observatories. Our aim is to investigate the electromotive force, the kinetic
helicity effect ($\alpha$ term), the turbulent diffusion ($\beta$ term) and the
cross-helicity effect ($\gamma$ term) in the inner heliosphere below 1 au. We
set up a one-dimensional model of the solar wind velocity and magnetic field
for a hypothetic interplanetary CME. Because turbulent structures within the
solar wind evolve much slower than this structure needs to pass by the
spacecraft, we use a reduced curl operator to compute the current density and
vorticity. We test our CME shock-front model against an observed magnetic
transient that passes by the Helios-2 spacecraft. At the peak of the
fluctuations in this event we find strongly enhanced $\alpha$, $\beta$ and
$\gamma$ terms, as well as a strong peak in the total electromotive force. Our
method allows us to automatically identify magnetic transient events from any
in-situ spacecraft observations that contain magnetic field and plasma velocity
data of the solar wind.
| astro-ph.SR physics.plasm-ph | electromotive force is an essential quantity in dynamo theory during a coronal mass ejection cme magnetic helicity gets decoupled from the sun and advected into the heliosphere with the solar wind eventually a heliospheric magnetic transient event might pass by a spacecraft such as the helios space observatories our aim is to investigate the electromotive force the kinetic helicity effect alpha term the turbulent diffusion beta term and the crosshelicity effect gamma term in the inner heliosphere below 1 au we set up a onedimensional model of the solar wind velocity and magnetic field for a hypothetic interplanetary cme because turbulent structures within the solar wind evolve much slower than this structure needs to pass by the spacecraft we use a reduced curl operator to compute the current density and vorticity we test our cme shockfront model against an observed magnetic transient that passes by the helios2 spacecraft at the peak of the fluctuations in this event we find strongly enhanced alpha beta and gamma terms as well as a strong peak in the total electromotive force our method allows us to automatically identify magnetic transient events from any insitu spacecraft observations that contain magnetic field and plasma velocity data of the solar wind | [['electromotive', 'force', 'is', 'an', 'essential', 'quantity', 'in', 'dynamo', 'theory', 'during', 'a', 'coronal', 'mass', 'ejection', 'cme', 'magnetic', 'helicity', 'gets', 'decoupled', 'from', 'the', 'sun', 'and', 'advected', 'into', 'the', 'heliosphere', 'with', 'the', 'solar', 'wind', 'eventually', 'a', 'heliospheric', 'magnetic', 'transient', 'event', 'might', 'pass', 'by', 'a', 'spacecraft', 'such', 'as', 'the', 'helios', 'space', 'observatories', 'our', 'aim', 'is', 'to', 'investigate', 'the', 'electromotive', 'force', 'the', 'kinetic', 'helicity', 'effect', 'alpha', 'term', 'the', 'turbulent', 'diffusion', 'beta', 'term', 'and', 'the', 'crosshelicity', 'effect', 'gamma', 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1,802.10112 | Qubit Parity Measurement by Parametric Driving in Circuit QED | Multi-qubit parity measurements are essential to quantum error correction.
Current realizations of these measurements often rely on ancilla qubits, a
method that is sensitive to faulty two-qubit gates and which requires
significant experimental overhead. We propose a hardware-efficient multi-qubit
parity measurement exploiting the bifurcation dynamics of a parametrically
driven nonlinear oscillator. This approach takes advantage of the resonator's
parametric oscillation threshold which is a function of the joint parity of
dispersively coupled qubits, leading to high-amplitude oscillations for one
parity subspace and no oscillation for the other. We present analytical and
numerical results for two- and four-qubit parity measurements with
high-fidelity readout preserving the parity eigenpaces. Moreover, we discuss a
possible realization which can be readily implemented with the current circuit
QED experimental toolbox. These results could lead to significant
simplifications in the experimental implementation of quantum error correction,
and notably of the surface code.
| quant-ph | multiqubit parity measurements are essential to quantum error correction current realizations of these measurements often rely on ancilla qubits a method that is sensitive to faulty twoqubit gates and which requires significant experimental overhead we propose a hardwareefficient multiqubit parity measurement exploiting the bifurcation dynamics of a parametrically driven nonlinear oscillator this approach takes advantage of the resonators parametric oscillation threshold which is a function of the joint parity of dispersively coupled qubits leading to highamplitude oscillations for one parity subspace and no oscillation for the other we present analytical and numerical results for two and fourqubit parity measurements with highfidelity readout preserving the parity eigenpaces moreover we discuss a possible realization which can be readily implemented with the current circuit qed experimental toolbox these results could lead to significant simplifications in the experimental implementation of quantum error correction and notably of the surface code | [['multiqubit', 'parity', 'measurements', 'are', 'essential', 'to', 'quantum', 'error', 'correction', 'current', 'realizations', 'of', 'these', 'measurements', 'often', 'rely', 'on', 'ancilla', 'qubits', 'a', 'method', 'that', 'is', 'sensitive', 'to', 'faulty', 'twoqubit', 'gates', 'and', 'which', 'requires', 'significant', 'experimental', 'overhead', 'we', 'propose', 'a', 'hardwareefficient', 'multiqubit', 'parity', 'measurement', 'exploiting', 'the', 'bifurcation', 'dynamics', 'of', 'a', 'parametrically', 'driven', 'nonlinear', 'oscillator', 'this', 'approach', 'takes', 'advantage', 'of', 'the', 'resonators', 'parametric', 'oscillation', 'threshold', 'which', 'is', 'a', 'function', 'of', 'the', 'joint', 'parity', 'of', 'dispersively', 'coupled', 'qubits', 'leading', 'to', 'highamplitude', 'oscillations', 'for', 'one', 'parity', 'subspace', 'and', 'no', 'oscillation', 'for', 'the', 'other', 'we', 'present', 'analytical', 'and', 'numerical', 'results', 'for', 'two', 'and', 'fourqubit', 'parity', 'measurements', 'with', 'highfidelity', 'readout', 'preserving', 'the', 'parity', 'eigenpaces', 'moreover', 'we', 'discuss', 'a', 'possible', 'realization', 'which', 'can', 'be', 'readily', 'implemented', 'with', 'the', 'current', 'circuit', 'qed', 'experimental', 'toolbox', 'these', 'results', 'could', 'lead', 'to', 'significant', 'simplifications', 'in', 'the', 'experimental', 'implementation', 'of', 'quantum', 'error', 'correction', 'and', 'notably', 'of', 'the', 'surface', 'code']] | [-0.18053980265782835, 0.15960564054290038, -0.01819856551204187, 0.007312954257132433, -0.04607216995080105, -0.25952168544689713, 0.07190757577579159, 0.3500550097669475, -0.1960090451175347, -0.3097919607033772, 0.07736298472203391, -0.2503341260243259, -0.12113871609714504, 0.2532536157458607, -0.036310046972681045, 0.17021577432751656, 0.11704342151561933, -0.007819355556016995, -0.07918630339695988, -0.22801150205648607, 0.26214770901909407, 0.060756768850195736, 0.28360242675343117, 0.028490597378954083, 0.10977698328982417, -0.040820627531502396, 0.011722278580742164, -0.034620100139161676, -0.08593609205647429, 0.09893313070966138, 0.2639992841415935, 0.10605918204964837, 0.20739480785171813, -0.47814728714810273, -0.14631716687856372, 0.09481634078029957, 0.11771457100662196, 0.26844228191718383, -0.07411687192587932, -0.3234844354705678, 0.021567159688048478, -0.17985933329651338, -0.059967061071397945, -0.16266600754816965, -0.024052858501414046, -0.039110054164969675, -0.298474192360623, 0.07639842323583758, 0.048879965661197074, 0.04005227187412351, 0.031665607064496726, -0.0775509244025064, 0.050353014296787374, 0.08678992437489796, -0.06326940905677879, 0.007957527902261872, 0.15810264972808202, -0.07815531304448894, -0.1895135963568464, 0.3153348705378044, -0.03735325816604826, -0.22724308132860138, 0.14137887349675615, -0.10127011240708977, -0.13509904990011515, 0.0766537735859553, 0.14627636151271872, 0.02894309059572859, -0.10745347213620941, 0.05098169363393228, 0.01936939556940666, 0.24338498978209422, 0.024405527982809063, 0.13343633944087843, 0.15436286030388954, 0.13170323228081948, 0.09340843998426054, 0.15981455780047327, -0.09036192557121264, -0.11963550265297979, -0.36093190715311924, -0.13810970216420376, -0.1696907290477409, 0.07472551320663318, -0.04580428536297, -0.13887291773830335, 0.4600175463904937, 0.15354854092098927, 0.14891029928063895, 0.011018458807989696, 0.367152748707061, 0.1316215531041962, 0.1110516217045693, 0.03643264993378478, 0.2626988445990719, 0.16321559224323007, 0.020086445091389276, -0.3319275716591316, 0.04791058829464924, 0.008393524781341612] |
1,802.10113 | Multiwavelength observations of the blazar BL Lacertae: a new fast TeV
gamma-ray flare | Combined with very-long-baseline interferometry measurements, the
observations of fast TeV gamma-ray flares probe the structure and emission
mechanism of blazar jets. However, only a handful of such flares have been
detected to date, and only within the last few years have these flares been
observed from lower-frequency-peaked BL~Lac objects and flat-spectrum radio
quasars. We report on a fast TeV gamma-ray flare from the blazar BL~Lacertae
observed by VERITAS, with a rise time of $\sim$2.3~hr and a decay time of
$\sim$36~min. The peak flux above 200 GeV is $(4.2 \pm 0.6) \times 10^{-6}
\;\text{photon} \;\text{m}^{-2}\; \text{s}^{-1}$ measured with a
4-minute-binned light curve, corresponding to $\sim$180\% of the flux which is
observed from the Crab Nebula above the same energy threshold. Variability
contemporaneous with the TeV gamma-ray flare was observed in GeV gamma-ray,
X-ray, and optical flux, as well as in optical and radio polarization.
Additionally, a possible moving emission feature with superluminal apparent
velocity was identified in VLBA observations at 43 GHz, potentially passing the
radio core of the jet around the time of the gamma-ray flare. We discuss the
constraints on the size, Lorentz factor, and location of the emitting region of
the flare, and the interpretations with several theoretical models which invoke
relativistic plasma passing stationary shocks.
| astro-ph.HE | combined with verylongbaseline interferometry measurements the observations of fast tev gammaray flares probe the structure and emission mechanism of blazar jets however only a handful of such flares have been detected to date and only within the last few years have these flares been observed from lowerfrequencypeaked bllac objects and flatspectrum radio quasars we report on a fast tev gammaray flare from the blazar bllacertae observed by veritas with a rise time of sim23hr and a decay time of sim36min the peak flux above 200 gev is 42 pm 06 times 106 textphoton textm2 texts1 measured with a 4minutebinned light curve corresponding to sim180 of the flux which is observed from the crab nebula above the same energy threshold variability contemporaneous with the tev gammaray flare was observed in gev gammaray xray and optical flux as well as in optical and radio polarization additionally a possible moving emission feature with superluminal apparent velocity was identified in vlba observations at 43 ghz potentially passing the radio core of the jet around the time of the gammaray flare we discuss the constraints on the size lorentz factor and location of the emitting region of the flare and the interpretations with several theoretical models which invoke relativistic plasma passing stationary shocks | [['combined', 'with', 'verylongbaseline', 'interferometry', 'measurements', 'the', 'observations', 'of', 'fast', 'tev', 'gammaray', 'flares', 'probe', 'the', 'structure', 'and', 'emission', 'mechanism', 'of', 'blazar', 'jets', 'however', 'only', 'a', 'handful', 'of', 'such', 'flares', 'have', 'been', 'detected', 'to', 'date', 'and', 'only', 'within', 'the', 'last', 'few', 'years', 'have', 'these', 'flares', 'been', 'observed', 'from', 'lowerfrequencypeaked', 'bllac', 'objects', 'and', 'flatspectrum', 'radio', 'quasars', 'we', 'report', 'on', 'a', 'fast', 'tev', 'gammaray', 'flare', 'from', 'the', 'blazar', 'bllacertae', 'observed', 'by', 'veritas', 'with', 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1,802.10114 | Modelling the UV spectrum of SDSS-III/BOSS galaxies: hints towards the
detection of the UV upturn at high-z | We exploit stellar population models of absorption line indices in the
ultraviolet (from 2000 - 3200 Angstrom) to study the spectra of massive
galaxies. Our central aim is to investigate the occurrence at high-redshift of
the UV upturn, i.e. the increased UV emission due to old stars observed in
massive galaxies and spiral bulges in the local Universe. We use a large
(~275,000) sample of z~0.6 massive (log M*/Msun > 11.5) galaxies using both
individual spectra and stacks and employ a suite of models including a UV
contribution from old populations, spanning various effective temperatures,
fuel consumptions and metallicities. We find that a subset of our indices, Mg
I, Fe I, and BL3096, are able to differentiate between old and young UV ages.
We find evidence for old stars contributing to the UV in massive galaxies,
rather than star formation. The data favour models with low/medium upturn
temperatures (10,000 - 25,000K) consistent with local galaxies, depending on
the assumed metallicity, and with a larger fuel (f ~ 0.065 Msun). Models with
one typical temperature are favoured over models with a temperature range,
which would be typical of an extended horizontal branch. Old UV-bright
populations are found in the whole galaxy sample (~92%), with a mass fraction
peaking around 20-30%. Upturn galaxies are massive and have redder colours, in
agreement with findings in the local Universe. We find that the upturn
phenomenon appears at z~1 and its frequency increases towards lower redshift,
as expected by stellar evolution of low mass stars. Our findings will help
constrain stellar evolution in the exotic UV upturn phase.
| astro-ph.GA | we exploit stellar population models of absorption line indices in the ultraviolet from 2000 3200 angstrom to study the spectra of massive galaxies our central aim is to investigate the occurrence at highredshift of the uv upturn ie the increased uv emission due to old stars observed in massive galaxies and spiral bulges in the local universe we use a large 275000 sample of z06 massive log mmsun 115 galaxies using both individual spectra and stacks and employ a suite of models including a uv contribution from old populations spanning various effective temperatures fuel consumptions and metallicities we find that a subset of our indices mg i fe i and bl3096 are able to differentiate between old and young uv ages we find evidence for old stars contributing to the uv in massive galaxies rather than star formation the data favour models with lowmedium upturn temperatures 10000 25000k consistent with local galaxies depending on the assumed metallicity and with a larger fuel f 0065 msun models with one typical temperature are favoured over models with a temperature range which would be typical of an extended horizontal branch old uvbright populations are found in the whole galaxy sample 92 with a mass fraction peaking around 2030 upturn galaxies are massive and have redder colours in agreement with findings in the local universe we find that the upturn phenomenon appears at z1 and its frequency increases towards lower redshift as expected by stellar evolution of low mass stars our findings will help constrain stellar evolution in the exotic uv upturn phase | [['we', 'exploit', 'stellar', 'population', 'models', 'of', 'absorption', 'line', 'indices', 'in', 'the', 'ultraviolet', 'from', '2000', '3200', 'angstrom', 'to', 'study', 'the', 'spectra', 'of', 'massive', 'galaxies', 'our', 'central', 'aim', 'is', 'to', 'investigate', 'the', 'occurrence', 'at', 'highredshift', 'of', 'the', 'uv', 'upturn', 'ie', 'the', 'increased', 'uv', 'emission', 'due', 'to', 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1,802.10115 | Exploring the squeezed three-point galaxy correlation function with
generalized halo occupation distribution models | We present the GeneRalized ANd Differentiable Halo Occupation Distribution
(GRAND-HOD) routine that generalizes the standard 5 parameter halo occupation
distribution model (HOD) with various halo-scale physics and assembly bias. We
describe the methodology of 4 different generalizations: satellite distribution
generalization, velocity bias, closest approach distance generalization, and
assembly bias. We showcase the signatures of these generalizations in the
2-point correlation function (2PCF) and the squeezed 3-point correlation
function (squeezed 3PCF). We identify generalized HOD prescriptions that are
nearly degenerate in the projected 2PCF and demonstrate that these degeneracies
are broken in the redshift-space anisotropic 2PCF and the squeezed 3PCF. We
also discuss the possibility of identifying degeneracies in the anisotropic
2PCF and further demonstrate the extra constraining power of the squeezed 3PCF
on galaxy-halo connection models. We find that within our current HOD
framework, the anisotropic 2PCF can predict the squeezed 3PCF better than its
statistical error. This implies that a discordant squeezed 3PCF measurement
could falsify the particular HOD model space. Alternatively, it is possible
that further generalizations of the HOD model would open opportunities for the
squeezed 3PCF to provide novel parameter measurements. The GRAND-HOD Python
package is publicly available at https://github.com/SandyYuan/GRAND-HOD .
| astro-ph.CO | we present the generalized and differentiable halo occupation distribution grandhod routine that generalizes the standard 5 parameter halo occupation distribution model hod with various haloscale physics and assembly bias we describe the methodology of 4 different generalizations satellite distribution generalization velocity bias closest approach distance generalization and assembly bias we showcase the signatures of these generalizations in the 2point correlation function 2pcf and the squeezed 3point correlation function squeezed 3pcf we identify generalized hod prescriptions that are nearly degenerate in the projected 2pcf and demonstrate that these degeneracies are broken in the redshiftspace anisotropic 2pcf and the squeezed 3pcf we also discuss the possibility of identifying degeneracies in the anisotropic 2pcf and further demonstrate the extra constraining power of the squeezed 3pcf on galaxyhalo connection models we find that within our current hod framework the anisotropic 2pcf can predict the squeezed 3pcf better than its statistical error this implies that a discordant squeezed 3pcf measurement could falsify the particular hod model space alternatively it is possible that further generalizations of the hod model would open opportunities for the squeezed 3pcf to provide novel parameter measurements the grandhod python package is publicly available at httpsgithubcomsandyyuangrandhod | [['we', 'present', 'the', 'generalized', 'and', 'differentiable', 'halo', 'occupation', 'distribution', 'grandhod', 'routine', 'that', 'generalizes', 'the', 'standard', '5', 'parameter', 'halo', 'occupation', 'distribution', 'model', 'hod', 'with', 'various', 'haloscale', 'physics', 'and', 'assembly', 'bias', 'we', 'describe', 'the', 'methodology', 'of', '4', 'different', 'generalizations', 'satellite', 'distribution', 'generalization', 'velocity', 'bias', 'closest', 'approach', 'distance', 'generalization', 'and', 'assembly', 'bias', 'we', 'showcase', 'the', 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1,802.10116 | Generalized Byzantine-tolerant SGD | We propose three new robust aggregation rules for distributed synchronous
Stochastic Gradient Descent~(SGD) under a general Byzantine failure model. The
attackers can arbitrarily manipulate the data transferred between the servers
and the workers in the parameter server~(PS) architecture. We prove the
Byzantine resilience properties of these aggregation rules. Empirical analysis
shows that the proposed techniques outperform current approaches for realistic
use cases and Byzantine attack scenarios.
| cs.DC stat.ML | we propose three new robust aggregation rules for distributed synchronous stochastic gradient descentsgd under a general byzantine failure model the attackers can arbitrarily manipulate the data transferred between the servers and the workers in the parameter serverps architecture we prove the byzantine resilience properties of these aggregation rules empirical analysis shows that the proposed techniques outperform current approaches for realistic use cases and byzantine attack scenarios | [['we', 'propose', 'three', 'new', 'robust', 'aggregation', 'rules', 'for', 'distributed', 'synchronous', 'stochastic', 'gradient', 'descentsgd', 'under', 'a', 'general', 'byzantine', 'failure', 'model', 'the', 'attackers', 'can', 'arbitrarily', 'manipulate', 'the', 'data', 'transferred', 'between', 'the', 'servers', 'and', 'the', 'workers', 'in', 'the', 'parameter', 'serverps', 'architecture', 'we', 'prove', 'the', 'byzantine', 'resilience', 'properties', 'of', 'these', 'aggregation', 'rules', 'empirical', 'analysis', 'shows', 'that', 'the', 'proposed', 'techniques', 'outperform', 'current', 'approaches', 'for', 'realistic', 'use', 'cases', 'and', 'byzantine', 'attack', 'scenarios']] | [-0.20360545012535472, -0.003150662858829354, -0.05934322690308997, 0.06496290899248737, -0.0470663073656121, -0.26157534303792723, 0.16909648599738086, 0.36690814728199533, -0.2979329189243303, -0.27986189429507113, 0.06568241975037381, -0.2529000952614076, -0.18926632325306084, 0.1364570981364302, -0.14668035689321574, 0.12871541252190416, 0.07615319429191225, 0.00459258738467752, 0.012642250096453636, -0.2994415389204567, 0.25883443460439925, -0.0029724308035590434, 0.3725587134390618, -0.013973952854002797, 0.06606084742110618, 0.0064189091402416425, 0.03265292066278176, 0.014346924848751136, -0.1045223938370217, 0.12433687538247216, 0.2949207781842261, 0.2109058809882933, 0.31065249166479614, -0.474709838064331, -0.18370221350624255, 0.13699778005706542, 0.12397110712613953, 0.16501187170488815, -0.03188034728042443, -0.30558583470569417, 0.1331621031206327, -0.24209035235936893, -0.07061085761189602, -0.17107818861294424, -0.03982313175572816, 0.09050659354155262, -0.3476285760530807, 0.04539805805225941, 0.056098397454303325, 0.030256191134509263, -0.0684836831465928, -0.06959094485500827, 0.0701012885494327, 0.10768075969606412, 0.031037462492487535, -0.056759299117733135, 0.19836397188235866, -0.10523852404245797, -0.2057451756713404, 0.3117514386575556, -0.007743467689689362, -0.20716545150869273, 0.17610410954909061, 0.041439013837864906, -0.19956952532414685, 0.04704499156143742, 0.22024819565316042, 0.13898516011734804, -0.16551626904049155, 0.023702678759229566, -0.021735665515403856, 0.1706304366799128, 0.01343641864756743, -0.0002367023447401483, 0.13310170093785872, 0.1566763595452137, 0.11781541280497825, 0.1548450602444284, -0.08754541175298844, -0.16772009879632882, -0.22070379921404476, -0.0671955192405166, -0.11964047929822383, -0.008128836459945887, -0.1508997016737174, -0.1216265018182722, 0.3706230709724354, 0.26664962832618394, 0.1554336893649165, 0.13320430630648677, 0.39347970638085494, 0.024958627982855294, 0.05595892882256797, 0.19739130420158757, 0.2353731799874257, 0.023916775417147262, 0.12069306715927793, -0.19494746591380768, 0.18469340169703533, -0.019834443193041916] |
1,802.10117 | Economic Implications of Blockchain Platforms | In an economy with asymmetric information, the smart contract in the
blockchain protocol mitigates uncertainty. Since, as a new trading platform,
the blockchain triggers segmentation of market and differentiation of agents in
both the sell and buy sides of the market, it recomposes the asymmetric
information and generates spreads in asset price and quality between itself and
a traditional platform. We show that marginal innovation and sophistication of
the smart contract have non-monotonic effects on the trading value in the
blockchain platform, its fundamental value, the price of cryptocurrency, and
consumers' welfare. Moreover, a blockchain manager who controls the level of
the innovation of the smart contract has an incentive to keep it lower than the
first best when the underlying information asymmetry is not severe, leading to
welfare loss for consumers.
| q-fin.PR cs.CR q-fin.EC | in an economy with asymmetric information the smart contract in the blockchain protocol mitigates uncertainty since as a new trading platform the blockchain triggers segmentation of market and differentiation of agents in both the sell and buy sides of the market it recomposes the asymmetric information and generates spreads in asset price and quality between itself and a traditional platform we show that marginal innovation and sophistication of the smart contract have nonmonotonic effects on the trading value in the blockchain platform its fundamental value the price of cryptocurrency and consumers welfare moreover a blockchain manager who controls the level of the innovation of the smart contract has an incentive to keep it lower than the first best when the underlying information asymmetry is not severe leading to welfare loss for consumers | [['in', 'an', 'economy', 'with', 'asymmetric', 'information', 'the', 'smart', 'contract', 'in', 'the', 'blockchain', 'protocol', 'mitigates', 'uncertainty', 'since', 'as', 'a', 'new', 'trading', 'platform', 'the', 'blockchain', 'triggers', 'segmentation', 'of', 'market', 'and', 'differentiation', 'of', 'agents', 'in', 'both', 'the', 'sell', 'and', 'buy', 'sides', 'of', 'the', 'market', 'it', 'recomposes', 'the', 'asymmetric', 'information', 'and', 'generates', 'spreads', 'in', 'asset', 'price', 'and', 'quality', 'between', 'itself', 'and', 'a', 'traditional', 'platform', 'we', 'show', 'that', 'marginal', 'innovation', 'and', 'sophistication', 'of', 'the', 'smart', 'contract', 'have', 'nonmonotonic', 'effects', 'on', 'the', 'trading', 'value', 'in', 'the', 'blockchain', 'platform', 'its', 'fundamental', 'value', 'the', 'price', 'of', 'cryptocurrency', 'and', 'consumers', 'welfare', 'moreover', 'a', 'blockchain', 'manager', 'who', 'controls', 'the', 'level', 'of', 'the', 'innovation', 'of', 'the', 'smart', 'contract', 'has', 'an', 'incentive', 'to', 'keep', 'it', 'lower', 'than', 'the', 'first', 'best', 'when', 'the', 'underlying', 'information', 'asymmetry', 'is', 'not', 'severe', 'leading', 'to', 'welfare', 'loss', 'for', 'consumers']] | [-0.11955755114740202, 0.03407541507671104, -0.1106844813676679, 0.08045490663800786, -0.1447899086500397, -0.18578488666933912, 0.1502960864241228, 0.40583445650759997, -0.3124161172402269, -0.2836030948949793, 0.15409254107556752, -0.3124353242842552, -0.1096462341352501, 0.12446824198176387, -0.1498380476121883, -0.01222026698826279, -0.009643599810434207, 0.0460885013915769, 0.08359620383876654, -0.3007661068655607, 0.2648542646819882, 0.0762723633870198, 0.365283899714829, 0.12636528702324812, 0.10552816458743151, -0.011522697025327055, 0.002335274506729978, -0.052201821399454514, -0.10542013255004168, 0.1721028095281875, 0.29414353620986106, 0.18241798335362852, 0.42246529326297855, -0.442566744037655, -0.08114356993171493, 0.10267399950308427, 0.03744554570662782, 0.030351552977191127, -0.03700679940622983, -0.2742185851644355, 0.01846890565974794, -0.32053896822106404, -0.09552757924365747, -0.05307102506582177, 0.002274483200589209, 0.0212417783087674, -0.29969098286361984, 0.0011557842683018618, 0.030403546907206754, 0.02778797206746144, -0.032859254556437886, -0.07397639958138172, -0.11722024767624058, 0.19221311338527575, 0.10612536308298755, -0.08223019908639986, 0.19736815616843922, -0.18405145971204034, -0.18159999696267698, 0.39060118530684984, -0.0017595238996294632, -0.1252452697985244, 0.07007977694187684, -0.0970030021533825, -0.09286496400093759, 0.07275132173743412, 0.21704889695295168, -0.005215453833984993, -0.1717738146838805, 0.025287641721105786, -0.022526494710784377, 0.20588753804678225, 0.060764543693477134, 0.033734879125876506, 0.19842340173319742, 0.2345428004103734, 0.20924196939316458, 0.06933066460040917, 0.014988914020146236, -0.2059951498535753, -0.22515838356770376, -0.17166478779764122, -0.15984166534581998, 0.03364815582525259, -0.15745567254340437, -0.15998600450351494, 0.38196133327393134, 0.18235110374121352, 0.09226464465587535, 0.041440086087339935, 0.36764053462201174, 0.08204509777759864, 0.08323774941421988, 0.1510156193030074, 0.205906328578117, -0.060116917713818975, 0.2162884156795517, -0.18308479880437767, 0.2329445181926357, -0.03624629774948454] |
1,802.10118 | The cosmic evolution of the spatially-resolved star formation rate and
stellar mass of the CALIFA survey | We investigate the cosmic evolution of the absolute and specific star
formation rate (SFR, sSFR) of galaxies as derived from a spatially-resolved
study of the stellar populations in a set of 366 nearby galaxies from the
CALIFA survey. The analysis combines GALEX and SDSS images with the 4000 break,
H_beta, and [MgFe] indices measured from the datacubes, to constrain parametric
models for the SFH, which are then used to study the cosmic evolution of the
star formation rate density (SFRD), the sSFR, the main sequence of star
formation (MSSF), and the stellar mass density (SMD). A delayed-tau model,
provides the best results, in good agreement with those obtained from
cosmological surveys. Our main results from this model are: a) The time since
the onset of the star formation is larger in the inner regions than in the
outer ones, while tau is similar or smaller in the inner than in the outer
regions. b) The sSFR declines rapidly as the Universe evolves, and faster for
early than for late type galaxies, and for the inner than for the outer regions
of galaxies. c) SFRD and SMD agree well with results from cosmological surveys.
At z< 0.5, most star formation takes place in the outer regions of late spiral
galaxies, while at z>2 the inner regions of the progenitors of the current E
and S0 are the major contributors to SFRD. d) The inner regions of galaxies are
the major contributor to SMD at z> 0.5, growing their mass faster than the
outer regions, with a lookback time at 50% SMD of 9 and 6 Gyr for the inner and
outer regions. e) The MSSF follows a power-law at high redshift, with the slope
evolving with time, but always being sub-linear. f) In agreement with galaxy
surveys at different redshifts, the average SFH of CALIFA galaxies indicates
that galaxies grow their mass mainly in a mode that is well represented by a
delayed-tau model, with the peak at z~2 and an e-folding time of 3.9 Gyr.
| astro-ph.GA | we investigate the cosmic evolution of the absolute and specific star formation rate sfr ssfr of galaxies as derived from a spatiallyresolved study of the stellar populations in a set of 366 nearby galaxies from the califa survey the analysis combines galex and sdss images with the 4000 break h_beta and mgfe indices measured from the datacubes to constrain parametric models for the sfh which are then used to study the cosmic evolution of the star formation rate density sfrd the ssfr the main sequence of star formation mssf and the stellar mass density smd a delayedtau model provides the best results in good agreement with those obtained from cosmological surveys our main results from this model are a the time since the onset of the star formation is larger in the inner regions than in the outer ones while tau is similar or smaller in the inner than in the outer regions b the ssfr declines rapidly as the universe evolves and faster for early than for late type galaxies and for the inner than for the outer regions of galaxies c sfrd and smd agree well with results from cosmological surveys at z 05 most star formation takes place in the outer regions of late spiral galaxies while at z2 the inner regions of the progenitors of the current e and s0 are the major contributors to sfrd d the inner regions of galaxies are the major contributor to smd at z 05 growing their mass faster than the outer regions with a lookback time at 50 smd of 9 and 6 gyr for the inner and outer regions e the mssf follows a powerlaw at high redshift with the slope evolving with time but always being sublinear f in agreement with galaxy surveys at different redshifts the average sfh of califa galaxies indicates that galaxies grow their mass mainly in a mode that is well represented by a delayedtau model with the peak at z2 and an efolding time of 39 gyr | [['we', 'investigate', 'the', 'cosmic', 'evolution', 'of', 'the', 'absolute', 'and', 'specific', 'star', 'formation', 'rate', 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1,802.10119 | Hidden Variables and the Two Theorems of John Bell | Although skeptical of the prohibitive power of no-hidden-variables theorems,
John Bell was himself responsible for the two most important ones. I describe
some recent versions of the lesser known of the two (familar to experts as the
"Kochen-Specker theorem") which have transparently simple proofs. One of the
new versions can be converted without additional analysis into a powerful form
of the very much better known "Bell's Theorem", thereby clarifying the
conceptual link between these two results of Bell.
| quant-ph physics.hist-ph | although skeptical of the prohibitive power of nohiddenvariables theorems john bell was himself responsible for the two most important ones i describe some recent versions of the lesser known of the two familar to experts as the kochenspecker theorem which have transparently simple proofs one of the new versions can be converted without additional analysis into a powerful form of the very much better known bells theorem thereby clarifying the conceptual link between these two results of bell | [['although', 'skeptical', 'of', 'the', 'prohibitive', 'power', 'of', 'nohiddenvariables', 'theorems', 'john', 'bell', 'was', 'himself', 'responsible', 'for', 'the', 'two', 'most', 'important', 'ones', 'i', 'describe', 'some', 'recent', 'versions', 'of', 'the', 'lesser', 'known', 'of', 'the', 'two', 'familar', 'to', 'experts', 'as', 'the', 'kochenspecker', 'theorem', 'which', 'have', 'transparently', 'simple', 'proofs', 'one', 'of', 'the', 'new', 'versions', 'can', 'be', 'converted', 'without', 'additional', 'analysis', 'into', 'a', 'powerful', 'form', 'of', 'the', 'very', 'much', 'better', 'known', 'bells', 'theorem', 'thereby', 'clarifying', 'the', 'conceptual', 'link', 'between', 'these', 'two', 'results', 'of', 'bell']] | [-0.07265659706676021, 0.06321243039714411, -0.1234305851543561, 0.16833883048727727, -0.13336716047846353, -0.24490620577349687, 0.04369805635024722, 0.2469219696493103, -0.22756842679089645, -0.33439359961985016, 0.11806748693999954, -0.22446583033515474, -0.10066448106497261, 0.26235054099621874, -0.09551955586394821, 0.011646820424805181, 0.04432888808719909, -0.004074169054197578, -0.04106004468093698, -0.26205302639685285, 0.29796441849798727, 0.02650109501570487, 0.25629789121926594, 0.06184313437925317, 0.0208783973283015, 0.013670182154060174, -0.07366490165571658, 0.012539007474119082, -0.09022056275996594, 0.16913335550074968, 0.2531380114706758, 0.21185380416826752, 0.33105193971632385, -0.46109120862988323, -0.13854706898415223, 0.11299621643653761, 0.09648881515171617, 0.10850932738498952, 0.009289192214894753, -0.3279531049446609, 0.043697579620549314, -0.14238706989309344, -0.1424015342639998, -0.09679680807181658, -0.016713850409126818, -0.010283437427670624, -0.16519688383843273, 0.07552070502573863, 0.1890001923072701, 0.03315288709619871, 0.006417799218653295, -0.1580445858088728, 0.020718711458194334, 0.11844559719499487, 0.05989193037534372, 0.002568450708610889, 0.040351411960541435, -0.12583017487747547, -0.17445665704181942, 0.3613776732713748, 0.02817072179646064, -0.17247048113495111, 0.22080689444182774, -0.09148707332758185, -0.19322676963220614, 0.06571614812725247, 0.06170883040445355, 0.07235611864747718, -0.16333409854903436, 0.0048389809432988744, -0.10264122567306726, 0.1260824560139997, 0.1476981781441002, 0.09722447634125367, 0.18793285608243865, 0.07759593720010553, 0.019493534489391513, 0.1436303824869892, 0.006682120526257234, -0.13024072038630644, -0.31516904800604933, -0.19732793532789517, -0.17594794123336518, 0.08509953658377083, -0.11237334759117892, -0.0960540299778446, 0.37546132640757907, 0.11593123289565437, 0.12123541666481358, 0.026594346438427098, 0.284830779923747, 0.08071507432778628, 0.11531696353221121, 0.04291084812333187, 0.2657789124421423, 0.18097921118187982, 0.09781422920954916, -0.09901500745493252, 0.09861254071942173, 0.09796524925294738] |
1,802.1012 | Twisted Hilbert Spaces of 3d Supersymmetric Gauge Theories | We study aspects of 3d $\mathcal{N}=2$ supersymmetric gauge theories on the
product of a line and a Riemann surface. Performing a topological twist along
the Riemann surface leads to an effective supersymmetric quantum mechanics on
the line. We propose a construction of the space of supersymmetric ground
states as a graded vector space in terms of a certain cohomology of generalized
vortex moduli spaces on the Riemann surface. This exhibits a rich dependence on
deformation parameters compatible with the topological twist, including
superpotentials, real mass parameters, and background vector bundles associated
to flavour symmetries. By matching spaces of supersymmetric ground states, we
perform new checks of 3d abelian mirror symmetry.
| hep-th | we study aspects of 3d mathcaln2 supersymmetric gauge theories on the product of a line and a riemann surface performing a topological twist along the riemann surface leads to an effective supersymmetric quantum mechanics on the line we propose a construction of the space of supersymmetric ground states as a graded vector space in terms of a certain cohomology of generalized vortex moduli spaces on the riemann surface this exhibits a rich dependence on deformation parameters compatible with the topological twist including superpotentials real mass parameters and background vector bundles associated to flavour symmetries by matching spaces of supersymmetric ground states we perform new checks of 3d abelian mirror symmetry | [['we', 'study', 'aspects', 'of', '3d', 'mathcaln2', 'supersymmetric', 'gauge', 'theories', 'on', 'the', 'product', 'of', 'a', 'line', 'and', 'a', 'riemann', 'surface', 'performing', 'a', 'topological', 'twist', 'along', 'the', 'riemann', 'surface', 'leads', 'to', 'an', 'effective', 'supersymmetric', 'quantum', 'mechanics', 'on', 'the', 'line', 'we', 'propose', 'a', 'construction', 'of', 'the', 'space', 'of', 'supersymmetric', 'ground', 'states', 'as', 'a', 'graded', 'vector', 'space', 'in', 'terms', 'of', 'a', 'certain', 'cohomology', 'of', 'generalized', 'vortex', 'moduli', 'spaces', 'on', 'the', 'riemann', 'surface', 'this', 'exhibits', 'a', 'rich', 'dependence', 'on', 'deformation', 'parameters', 'compatible', 'with', 'the', 'topological', 'twist', 'including', 'superpotentials', 'real', 'mass', 'parameters', 'and', 'background', 'vector', 'bundles', 'associated', 'to', 'flavour', 'symmetries', 'by', 'matching', 'spaces', 'of', 'supersymmetric', 'ground', 'states', 'we', 'perform', 'new', 'checks', 'of', '3d', 'abelian', 'mirror', 'symmetry']] | [-0.18116363901644944, 0.16928567132259062, -0.05334196207113564, 0.10575884028062732, -0.10566814420744777, -0.12271906910675832, -0.012429486550602385, 0.3266654816710136, -0.19600040797482837, -0.2518118297850544, 0.07600636097327383, -0.22401412623003125, -0.1689304534684528, 0.14154530978676946, -0.08345450950146187, 0.08664910468611528, 0.020559140176258303, 0.05084137662567876, -0.20508091776335444, -0.23235716058724476, 0.43196211973713206, -0.0360952612076124, 0.29279330418529836, 0.04817169050008736, 0.11249388429145753, 0.0215857470810244, 0.021538830794055355, -0.00890935371598144, -0.14842806723476812, 0.17730239094975828, 0.200770171219483, 0.028870346583426, 0.07753051020713016, -0.4250861374745992, -0.2220256956185701, 0.10582377974959938, 0.10666371277448806, 0.07553314142437144, -0.007915484113618731, -0.34070566548881204, 0.02956254772672599, -0.15217135289514608, -0.16629597843539987, -0.12321015299848197, -0.006367495545948094, -0.09473418983927166, -0.21122119328515096, -0.0040683975668137215, -0.025282516338947146, 0.10620384830134837, -0.08206664583730426, -0.057620780483226886, -0.15302467851645568, 0.04161641649393873, 0.08195410377599976, 0.056591928511096, 0.1456978375907056, -0.20529922667086464, -0.17744745525785469, 0.3991690491072156, -0.06387517108497294, -0.2719472342763435, 0.13536442880180072, -0.09046067983250726, -0.18467261996966872, 0.14800098057497632, 0.14602382076396184, 0.15391366720114918, 0.009063307995992628, 0.20891260776816953, -0.10534505821256475, 0.11982321320101619, 0.04605631840372966, 0.008558334825052456, 0.2767718205313114, 0.1345252989706668, 0.06921751847998663, 0.14463688550432297, -0.07247575544381768, -0.11853478217645633, -0.42918918080289253, -0.23813402545876505, -0.1172670163679868, 0.11864203672898425, -0.11174730363868135, -0.250642299590717, 0.4690378353592347, 0.04492475038225001, 0.21419182319633281, 0.07611612436276945, 0.2016609181057323, 0.0498275182961317, 0.06208263173360716, -0.02445926423057575, 0.1687654139812697, 0.20807627497283235, 0.018655993611636487, -0.20897180926139383, -0.10302133076739582, 0.2240040461045944] |
1,802.10121 | PROMETHEUS: PROcedural METhodology for developing HEuristics of
USability | Usability is used to assess the effectiveness of a software product from the
user point of view. Hence, proper methodologies and techniques to perform this
assessment are very relevant. Heuristic evaluation is probably the most
commonly used method for usability assessment. Developed by Nielsen and Molich
in the '90s, traditional heuristic evaluations rely on Nielsen's 10 usability
heuristics. However, recent evidence suggests that such heuristics are not
sufficiently complete for dealing with new domains such as interactive
television, virtual worlds, and many others. In addition to the lack of
suitability of traditional heuristics, in the past years the lack of a robust
methodology or process to effectively develop and validate these new
domain-specific heuristics has been documented. In this paper we summarize
current evidence on the lack of suitability of traditional heuristics, as well
as the need to develop new domain-specific heuristics. After identifying and
acknowledging existing gaps in heuristics for state-of-the-art technology, we
present PROMETHEUS, a PROcedural METhodology for developing HEuristics of
USability. PROMETHEUS refines the methodology of Rusu et. al. (2011), and is
composed of 8 stages. PROMETHEUS clearly defines the artifacts that are
required and produced by each stage, and also presents a set of quality
indicators in order to assess the need for further refinement in the
development of new heuristics. As an initial validation of PROMETHEUS, we apply
a questionnaire to several researchers that have used the methodology of Rusu
et. al., and we have also performed a small retrospective study, computing the
quality indicators of several previous studies. Our results suggest that
PROMETHEUS is a very promising methodology, and that the metrics and indicators
are indeed pertinent with respect to the conclusions of previous studies.
| cs.HC | usability is used to assess the effectiveness of a software product from the user point of view hence proper methodologies and techniques to perform this assessment are very relevant heuristic evaluation is probably the most commonly used method for usability assessment developed by nielsen and molich in the 90s traditional heuristic evaluations rely on nielsens 10 usability heuristics however recent evidence suggests that such heuristics are not sufficiently complete for dealing with new domains such as interactive television virtual worlds and many others in addition to the lack of suitability of traditional heuristics in the past years the lack of a robust methodology or process to effectively develop and validate these new domainspecific heuristics has been documented in this paper we summarize current evidence on the lack of suitability of traditional heuristics as well as the need to develop new domainspecific heuristics after identifying and acknowledging existing gaps in heuristics for stateoftheart technology we present prometheus a procedural methodology for developing heuristics of usability prometheus refines the methodology of rusu et al 2011 and is composed of 8 stages prometheus clearly defines the artifacts that are required and produced by each stage and also presents a set of quality indicators in order to assess the need for further refinement in the development of new heuristics as an initial validation of prometheus we apply a questionnaire to several researchers that have used the methodology of rusu et al and we have also performed a small retrospective study computing the quality indicators of several previous studies our results suggest that prometheus is a very promising methodology and that the metrics and indicators are indeed pertinent with respect to the conclusions of previous studies | [['usability', 'is', 'used', 'to', 'assess', 'the', 'effectiveness', 'of', 'a', 'software', 'product', 'from', 'the', 'user', 'point', 'of', 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1,802.10122 | The phase diagram of the underdoped cuprates at high magnetic field | The experimentally measured phase diagram of cuprate superconductors in the
temperature-applied magnetic field plane illuminates key issues in
understanding the physics of these materials. At low temperature, the
superconducting state gives way to a long-range charge order with increasing
magnetic field; both the orders coexist in a small intermediate region. The
charge order transition is strikingly insensitive to temperature, and quickly
reaches a transition temperature close to the zero-field superconducting $T_c$.
We argue that such a transition along with the presence of the coexisting phase
cannot be described simply by a competing orders formalism. We demonstrate that
for some range of parameters there is an enlarged symmetry of the strongly
coupled charge and superconducting orders in the system depending on their
relative masses and the coupling strength of the two orders. We establish that
this sharp switch from the superconducting phase to the charge order phase can
be understood in the framework of a composite SU(2) order parameter comprising
the charge and superconducting orders. Finally, we illustrate that there is a
possibility of the coexisting phase of the competing charge and superconducting
orders only when the SU(2) symmetry between them is weakly broken due to
biquadratic terms in the free energy. The relation of this sharp transition to
the proximity to the pseudogap quantum critical doping is also discussed.
| cond-mat.supr-con | the experimentally measured phase diagram of cuprate superconductors in the temperatureapplied magnetic field plane illuminates key issues in understanding the physics of these materials at low temperature the superconducting state gives way to a longrange charge order with increasing magnetic field both the orders coexist in a small intermediate region the charge order transition is strikingly insensitive to temperature and quickly reaches a transition temperature close to the zerofield superconducting t_c we argue that such a transition along with the presence of the coexisting phase cannot be described simply by a competing orders formalism we demonstrate that for some range of parameters there is an enlarged symmetry of the strongly coupled charge and superconducting orders in the system depending on their relative masses and the coupling strength of the two orders we establish that this sharp switch from the superconducting phase to the charge order phase can be understood in the framework of a composite su2 order parameter comprising the charge and superconducting orders finally we illustrate that there is a possibility of the coexisting phase of the competing charge and superconducting orders only when the su2 symmetry between them is weakly broken due to biquadratic terms in the free energy the relation of this sharp transition to the proximity to the pseudogap quantum critical doping is also discussed | [['the', 'experimentally', 'measured', 'phase', 'diagram', 'of', 'cuprate', 'superconductors', 'in', 'the', 'temperatureapplied', 'magnetic', 'field', 'plane', 'illuminates', 'key', 'issues', 'in', 'understanding', 'the', 'physics', 'of', 'these', 'materials', 'at', 'low', 'temperature', 'the', 'superconducting', 'state', 'gives', 'way', 'to', 'a', 'longrange', 'charge', 'order', 'with', 'increasing', 'magnetic', 'field', 'both', 'the', 'orders', 'coexist', 'in', 'a', 'small', 'intermediate', 'region', 'the', 'charge', 'order', 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1,802.10123 | Latent-space Physics: Towards Learning the Temporal Evolution of Fluid
Flow | We propose a method for the data-driven inference of temporal evolutions of
physical functions with deep learning. More specifically, we target fluid
flows, i.e. Navier-Stokes problems, and we propose a novel LSTM-based approach
to predict the changes of pressure fields over time. The central challenge in
this context is the high dimensionality of Eulerian space-time data sets. We
demonstrate for the first time that dense 3D+time functions of physics system
can be predicted within the latent spaces of neural networks, and we arrive at
a neural-network based simulation algorithm with significant practical
speed-ups. We highlight the capabilities of our method with a series of complex
liquid simulations, and with a set of single-phase buoyancy simulations. With a
set of trained networks, our method is more than two orders of magnitudes
faster than a traditional pressure solver. Additionally, we present and discuss
a series of detailed evaluations for the different components of our algorithm.
| cs.LG cs.GR | we propose a method for the datadriven inference of temporal evolutions of physical functions with deep learning more specifically we target fluid flows ie navierstokes problems and we propose a novel lstmbased approach to predict the changes of pressure fields over time the central challenge in this context is the high dimensionality of eulerian spacetime data sets we demonstrate for the first time that dense 3dtime functions of physics system can be predicted within the latent spaces of neural networks and we arrive at a neuralnetwork based simulation algorithm with significant practical speedups we highlight the capabilities of our method with a series of complex liquid simulations and with a set of singlephase buoyancy simulations with a set of trained networks our method is more than two orders of magnitudes faster than a traditional pressure solver additionally we present and discuss a series of detailed evaluations for the different components of our algorithm | [['we', 'propose', 'a', 'method', 'for', 'the', 'datadriven', 'inference', 'of', 'temporal', 'evolutions', 'of', 'physical', 'functions', 'with', 'deep', 'learning', 'more', 'specifically', 'we', 'target', 'fluid', 'flows', 'ie', 'navierstokes', 'problems', 'and', 'we', 'propose', 'a', 'novel', 'lstmbased', 'approach', 'to', 'predict', 'the', 'changes', 'of', 'pressure', 'fields', 'over', 'time', 'the', 'central', 'challenge', 'in', 'this', 'context', 'is', 'the', 'high', 'dimensionality', 'of', 'eulerian', 'spacetime', 'data', 'sets', 'we', 'demonstrate', 'for', 'the', 'first', 'time', 'that', 'dense', '3dtime', 'functions', 'of', 'physics', 'system', 'can', 'be', 'predicted', 'within', 'the', 'latent', 'spaces', 'of', 'neural', 'networks', 'and', 'we', 'arrive', 'at', 'a', 'neuralnetwork', 'based', 'simulation', 'algorithm', 'with', 'significant', 'practical', 'speedups', 'we', 'highlight', 'the', 'capabilities', 'of', 'our', 'method', 'with', 'a', 'series', 'of', 'complex', 'liquid', 'simulations', 'and', 'with', 'a', 'set', 'of', 'singlephase', 'buoyancy', 'simulations', 'with', 'a', 'set', 'of', 'trained', 'networks', 'our', 'method', 'is', 'more', 'than', 'two', 'orders', 'of', 'magnitudes', 'faster', 'than', 'a', 'traditional', 'pressure', 'solver', 'additionally', 'we', 'present', 'and', 'discuss', 'a', 'series', 'of', 'detailed', 'evaluations', 'for', 'the', 'different', 'components', 'of', 'our', 'algorithm']] | [-0.09596052380297088, 0.03979324747342616, -0.11078836163812268, 0.03070963150285503, -0.05104633475849895, -0.09273250250905556, 0.03143076269005082, 0.406825107130173, -0.2606305831577629, -0.3245796673459393, 0.06719112733385134, -0.242988507894456, -0.17255686546406268, 0.22294877138675043, -0.03029312145372387, 0.08855226627354951, 0.09224913717786733, -0.00708004113709505, -0.11913069713045843, -0.25346675971032756, 0.3262878514611346, 0.02663497043613461, 0.27635898208245635, 0.00023575214129921638, 0.15880457218506644, -0.058685191283553935, -0.0356884590276566, 0.05239378121299715, -0.10393209602419742, 0.15284272769775653, 0.24143723307765627, 0.1495601132781686, 0.3342891534863922, -0.4522321083288836, -0.2512764533810121, 0.08676392707581583, 0.11695192452814233, 0.13299981108866632, -0.035426030607356405, -0.26763581731479225, 0.09367561781331651, -0.17804160021784665, -0.052880790096854695, -0.1482759055154594, -0.01939004615843786, 0.033546742725631795, -0.2952379720640908, 0.08397165636262416, 0.036906834632789376, 0.06476412187207882, -0.06412171504818712, -0.10954740967932403, 0.03961953986895663, 0.09305976955652352, 0.01205025073814843, 0.0402148515629386, 0.11472317944265485, -0.14580715566070898, -0.13900712294133355, 0.39358885233952223, -0.07021572438048009, -0.1977232871148245, 0.22224412547994257, -0.11353093022970777, -0.13476210821720183, 0.11557956373182701, 0.25607415934485434, 0.15566428607072388, -0.12020207655165761, 0.0009486898396923942, -0.053222290368897744, 0.1791786771201786, -0.006859173475899489, -0.027260606241485987, 0.1709111856524894, 0.2906352364776754, 0.040857737382602385, 0.14790307383258264, -0.11632448242438075, -0.07941518099266288, -0.2779846972185432, -0.15220083045699684, -0.15752933027627142, -0.018627971196302065, -0.14837228552105922, -0.16090185713408955, 0.41828264700444906, 0.221587135710778, 0.18091804912853005, 0.11809634811882126, 0.331101575961312, 0.08151345956388181, 0.060462248677044715, 0.13424627502497874, 0.1664848811036025, 0.07303779284273715, 0.12526821493290635, -0.18508002016077577, 0.033648290354329605, 0.052865394688284904] |
1,802.10124 | A Short Path Quantum Algorithm for Exact Optimization | We give a quantum algorithm to exactly solve certain problems in
combinatorial optimization, including weighted MAX-2-SAT as well as problems
where the objective function is a weighted sum of products of Ising variables,
all terms of the same degree $D$; this problem is called weighted
MAX-E$D$-LIN2. We require that the optimal solution be unique for odd $D$ and
doubly degenerate for even $D$; however, we expect that the algorithm still
works without this condition and we show how to reduce to the case without this
assumption at the cost of an additional overhead. While the time required is
still exponential, the algorithm provably outperforms Grover's algorithm
assuming a mild condition on the number of low energy states of the target
Hamiltonian. The detailed analysis of the runtime dependence on a tradeoff
between the number of such states and algorithm speed: fewer such states allows
a greater speedup. This leads to a natural hybrid algorithm that finds either
an exact or approximate solution.
| quant-ph | we give a quantum algorithm to exactly solve certain problems in combinatorial optimization including weighted max2sat as well as problems where the objective function is a weighted sum of products of ising variables all terms of the same degree d this problem is called weighted maxedlin2 we require that the optimal solution be unique for odd d and doubly degenerate for even d however we expect that the algorithm still works without this condition and we show how to reduce to the case without this assumption at the cost of an additional overhead while the time required is still exponential the algorithm provably outperforms grovers algorithm assuming a mild condition on the number of low energy states of the target hamiltonian the detailed analysis of the runtime dependence on a tradeoff between the number of such states and algorithm speed fewer such states allows a greater speedup this leads to a natural hybrid algorithm that finds either an exact or approximate solution | [['we', 'give', 'a', 'quantum', 'algorithm', 'to', 'exactly', 'solve', 'certain', 'problems', 'in', 'combinatorial', 'optimization', 'including', 'weighted', 'max2sat', 'as', 'well', 'as', 'problems', 'where', 'the', 'objective', 'function', 'is', 'a', 'weighted', 'sum', 'of', 'products', 'of', 'ising', 'variables', 'all', 'terms', 'of', 'the', 'same', 'degree', 'd', 'this', 'problem', 'is', 'called', 'weighted', 'maxedlin2', 'we', 'require', 'that', 'the', 'optimal', 'solution', 'be', 'unique', 'for', 'odd', 'd', 'and', 'doubly', 'degenerate', 'for', 'even', 'd', 'however', 'we', 'expect', 'that', 'the', 'algorithm', 'still', 'works', 'without', 'this', 'condition', 'and', 'we', 'show', 'how', 'to', 'reduce', 'to', 'the', 'case', 'without', 'this', 'assumption', 'at', 'the', 'cost', 'of', 'an', 'additional', 'overhead', 'while', 'the', 'time', 'required', 'is', 'still', 'exponential', 'the', 'algorithm', 'provably', 'outperforms', 'grovers', 'algorithm', 'assuming', 'a', 'mild', 'condition', 'on', 'the', 'number', 'of', 'low', 'energy', 'states', 'of', 'the', 'target', 'hamiltonian', 'the', 'detailed', 'analysis', 'of', 'the', 'runtime', 'dependence', 'on', 'a', 'tradeoff', 'between', 'the', 'number', 'of', 'such', 'states', 'and', 'algorithm', 'speed', 'fewer', 'such', 'states', 'allows', 'a', 'greater', 'speedup', 'this', 'leads', 'to', 'a', 'natural', 'hybrid', 'algorithm', 'that', 'finds', 'either', 'an', 'exact', 'or', 'approximate', 'solution']] | [-0.14396623374824846, 0.0601769274706961, -0.0773388984561059, 0.08592627545611163, -0.07468235002894255, -0.1668184452186923, 0.09287759945626654, 0.3578727201830526, -0.28778279111113236, -0.357645421699615, 0.09396326314095373, -0.23131925450872576, -0.15830739128391796, 0.18880403108218025, -0.06995652407777976, 0.09999746587763754, 0.09504467520504171, 0.07924963989416542, -0.08060879682682227, -0.2860521166187694, 0.27610014773173525, 0.039913962652287825, 0.2400554525752708, 0.06518060896655556, 0.13521391621816858, 0.021641367185941857, 0.04562622675837035, 0.025710771560252452, -0.08546040341544929, 0.0875693021594512, 0.22122080386500598, 0.18491972245923852, 0.3074965196378205, -0.4179659486337571, -0.15289852744176613, 0.19305673827307288, 0.15064320173866538, 0.12445186567492783, -0.0057570064015200605, -0.19408482100571628, 0.11465685511794613, -0.11844951795026883, -0.1211987829279814, -0.07065001148614825, -0.01732394529032226, -0.00021915179959307453, -0.3318420903927499, 0.07386419780679648, 0.08436889866994612, 0.01695061952558271, -0.04628276025698526, -0.13341087480914426, 0.027326941566819453, 0.07980135282044594, 0.03212559590064082, 0.04406293930185045, 0.04766707106418214, -0.1288143246151183, -0.13875494969094762, 0.3685997297686542, -0.03800977583286231, -0.24400693676521226, 0.15848901060045414, -0.06481328145571932, -0.1454322209121856, 0.1425633983070505, 0.16491314527283638, 0.1612383933095782, -0.09892074827984068, 0.104231132032973, -0.07126780222198978, 0.17571596863754788, 0.056547951572198676, 0.06299615851227448, 0.09224457723690162, 0.14364571749053387, 0.1813609694472011, 0.17145380761108495, -0.023249537708065676, -0.0998152152010419, -0.2995310771388945, -0.1723993156815341, -0.20709531254537103, 0.047554657059166325, -0.12091401053611724, -0.18357422175059407, 0.38320513185900373, 0.11814112634461674, 0.21190365731010433, 0.11219352772690772, 0.31202224454038446, 0.12366534442559857, 0.028246022791598824, 0.1325666796340031, 0.16916726875084204, 0.07173593058424382, 0.055937230215344275, -0.24337749249411758, 0.08455074708677413, 0.0710726621103768] |
1,802.10125 | Guessing models and the approachability ideal | Starting with two supercompact cardinals we produce a generic extension of
the universe in which a principle that we call ${\rm GM}^+(\omega_3,\omega_1)$
holds. This principle implies ${\rm ISP}(\omega_2)$ and ${\rm ISP}(\omega_3)$,
and hence the tree property at $\omega_2$ and $\omega_3$, the Singular Cardinal
Hypothesis, and the failure of the weak square principle
$\square(\omega_2,\lambda)$, for all regular $\lambda \geq \omega_2$. In
addition, it implies that the restriction of the approachability ideal
$I[\omega_2]$ to the set of ordinals of cofinality $\omega_1$ is the non
stationary ideal on this set. The consistency of this last statement was
previously shown by Mitchell.
| math.LO | starting with two supercompact cardinals we produce a generic extension of the universe in which a principle that we call rm gmomega_3omega_1 holds this principle implies rm ispomega_2 and rm ispomega_3 and hence the tree property at omega_2 and omega_3 the singular cardinal hypothesis and the failure of the weak square principle squareomega_2lambda for all regular lambda geq omega_2 in addition it implies that the restriction of the approachability ideal iomega_2 to the set of ordinals of cofinality omega_1 is the non stationary ideal on this set the consistency of this last statement was previously shown by mitchell | [['starting', 'with', 'two', 'supercompact', 'cardinals', 'we', 'produce', 'a', 'generic', 'extension', 'of', 'the', 'universe', 'in', 'which', 'a', 'principle', 'that', 'we', 'call', 'rm', 'gmomega_3omega_1', 'holds', 'this', 'principle', 'implies', 'rm', 'ispomega_2', 'and', 'rm', 'ispomega_3', 'and', 'hence', 'the', 'tree', 'property', 'at', 'omega_2', 'and', 'omega_3', 'the', 'singular', 'cardinal', 'hypothesis', 'and', 'the', 'failure', 'of', 'the', 'weak', 'square', 'principle', 'squareomega_2lambda', 'for', 'all', 'regular', 'lambda', 'geq', 'omega_2', 'in', 'addition', 'it', 'implies', 'that', 'the', 'restriction', 'of', 'the', 'approachability', 'ideal', 'iomega_2', 'to', 'the', 'set', 'of', 'ordinals', 'of', 'cofinality', 'omega_1', 'is', 'the', 'non', 'stationary', 'ideal', 'on', 'this', 'set', 'the', 'consistency', 'of', 'this', 'last', 'statement', 'was', 'previously', 'shown', 'by', 'mitchell']] | [-0.17346118624257717, 0.13755580600341188, -0.09056609725341835, 0.10357334547765315, -0.0986114558417033, -0.09924967339301997, 0.026676799060449875, 0.29271663524250086, -0.29186552198247073, -0.16595133966667222, 0.11798078263862098, -0.24673334106882203, -0.03740759307835648, 0.1667343460152203, -0.04947930308643411, 0.008456140177007368, 0.03734772277877052, 0.08717490043094818, 0.006305018464658171, -0.21087272906121104, 0.39298109270315223, -0.037192384615178875, 0.2700792082208902, 0.038316634519550793, 0.15149352775312008, -0.006730109814831868, 0.05512377854679374, 0.06807480900092645, -0.20249750105830708, 0.09839245893353438, 0.21458230567897887, 0.17405385475982219, 0.2846609847223822, -0.3089269749285217, -0.13048302680452137, 0.1935899795845468, 0.05043147979898656, 0.021687229167660103, 0.06183917084684041, -0.2650748798623681, 0.17200551199246236, -0.1584947052352289, -0.20002639388289065, -0.01785650615520934, 0.07143235705951427, -0.01052350573677649, -0.3309850469627913, 0.05007854803524753, 0.21529366985642093, 0.07363992223040537, -0.02926537183489888, -0.09707864409590021, -0.026013143672706917, 0.014632092739277064, 0.023688165671588417, 0.05838634102466576, 0.031060196489016426, -0.04878271734180979, -0.08131079033557127, 0.35556992441861635, -0.10400583299788389, -0.17566110772090626, 0.17894229950739982, -0.2063637963803287, -0.20527812181674737, 0.09847528343039387, -0.019657473426629254, 0.0899980820002074, -0.08461316155784941, 0.18812307828115893, -0.1587677581911966, 0.1554614210382421, 0.146888096747484, 0.04452400443520635, 0.17144321829595782, 0.12675459912799775, 0.11935034451728806, 0.12273358413949609, -0.022212868717380187, 0.018298904659186908, -0.37207510525439963, -0.13680913048657647, -0.1568301913608361, 0.11509802607333962, -0.10572400730180039, -0.17767507924810994, 0.2801962657336225, 0.15642854371702575, 0.12033831891405614, 0.15613764369033, 0.20651624934311877, 0.07569544497125613, 0.03048529087422178, 0.06030531213222508, 0.22979899206535614, 0.13137557649083356, 0.003623512950032315, -0.1489061980825314, 0.043151371319718815, 0.11927868654713669] |
1,802.10126 | Orbit and Dynamical Mass of the Late-T Dwarf Gl 758 B | Gl 758 B is a late-T dwarf orbiting a metal-rich Sun-like star at a projected
separation of $\rho$ $\approx$ 1.6" (25 AU). We present four epochs of
astrometry of this system with NIRC2 at Keck Observatory spanning 2010 to 2017
together with 630 radial velocities (RVs) of the host star acquired over the
past two decades from McDonald Observatory, Keck Observatory, and the Automated
Planet Finder at Lick Observatory. The RVs reveal that Gl 758 is accelerating
with an evolving rate that varies between 2-5 m s$^{-1}$ yr$^{-1}$, consistent
with the expected influence of the imaged companion Gl 758 B. A joint fit of
the RVs and astrometry yields a dynamical mass of 42$^{+19}_{-7}$
M$_\mathrm{Jup}$ for the companion with a robust lower limit of 30.5
M$_\mathrm{Jup}$ at the 4-$\sigma$ level. Gl 758 B is on an eccentric orbit
($e$ = 0.26-0.67 at 95% confidence) with a semimajor axis of $a$ =
$21.1_{-1.3}^{+2.7}$ AU and an orbital period of $P$ = $96_{-9}^{+21}$ yr,
which takes it within $\approx$9 AU from its host star at periastron passage.
Substellar evolutionary models generally underpredict the mass of Gl 758 B for
nominal ages of 1-6 Gyr that have previously been adopted for the host star.
This discrepancy can be reconciled if the system is older---which is consistent
with activity indicators and recent isochrone fitting of the host star---or
alternatively if the models are systematically overluminous by $\approx$0.1-0.2
dex. Gl 758 B is currently the lowest-mass directly imaged companion inducing a
measured acceleration on its host star. In the future, bridging RVs and
high-contrast imaging with the next generation of extremely large telescopes
and space-based facilities will open the door to the first dynamical mass
measurements of imaged exoplanets.
| astro-ph.EP astro-ph.SR | gl 758 b is a latet dwarf orbiting a metalrich sunlike star at a projected separation of rho approx 16 25 au we present four epochs of astrometry of this system with nirc2 at keck observatory spanning 2010 to 2017 together with 630 radial velocities rvs of the host star acquired over the past two decades from mcdonald observatory keck observatory and the automated planet finder at lick observatory the rvs reveal that gl 758 is accelerating with an evolving rate that varies between 25 m s1 yr1 consistent with the expected influence of the imaged companion gl 758 b a joint fit of the rvs and astrometry yields a dynamical mass of 4219_7 m_mathrmjup for the companion with a robust lower limit of 305 m_mathrmjup at the 4sigma level gl 758 b is on an eccentric orbit e 026067 at 95 confidence with a semimajor axis of a 211_1327 au and an orbital period of p 96_921 yr which takes it within approx9 au from its host star at periastron passage substellar evolutionary models generally underpredict the mass of gl 758 b for nominal ages of 16 gyr that have previously been adopted for the host star this discrepancy can be reconciled if the system is olderwhich is consistent with activity indicators and recent isochrone fitting of the host staror alternatively if the models are systematically overluminous by approx0102 dex gl 758 b is currently the lowestmass directly imaged companion inducing a measured acceleration on its host star in the future bridging rvs and highcontrast imaging with the next generation of extremely large telescopes and spacebased facilities will open the door to the first dynamical mass measurements of imaged exoplanets | [['gl', '758', 'b', 'is', 'a', 'latet', 'dwarf', 'orbiting', 'a', 'metalrich', 'sunlike', 'star', 'at', 'a', 'projected', 'separation', 'of', 'rho', 'approx', '16', '25', 'au', 'we', 'present', 'four', 'epochs', 'of', 'astrometry', 'of', 'this', 'system', 'with', 'nirc2', 'at', 'keck', 'observatory', 'spanning', 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1,802.10127 | Identifying structural changes with unsupervised machine learning
methods | Unsupervised machine learning methods are used to identify structural changes
using the melting point transition in classical molecular dynamics simulations
as an example application of the approach. Dimensionality reduction and
clustering methods are applied to instantaneous radial distributions of atomic
configurations from classical molecular dynamics simulations of metallic
systems over a large temperature range. Principal component analysis is used to
dramatically reduce the dimensionality of the feature space across the samples
using an orthogonal linear transformation that preserves the statistical
variance of the data under the condition that the new feature space is linearly
independent. From there, k-means clustering is used to partition the samples
into solid and liquid phases through a criterion motivated by the geometry of
the reduced feature space of the samples, allowing for an estimation of the
melting point transition. This pattern criterion is conceptually similar to how
humans interpret the data but with far greater throughput, as the shapes of the
radial distributions are different for each phase and easily distinguishable by
humans. The transition temperature estimates derived from this machine learning
approach produce comparable results to other methods on similarly small system
sizes. These results show that machine learning approaches can be applied to
structural changes in physical systems.
| physics.comp-ph cond-mat.mtrl-sci | unsupervised machine learning methods are used to identify structural changes using the melting point transition in classical molecular dynamics simulations as an example application of the approach dimensionality reduction and clustering methods are applied to instantaneous radial distributions of atomic configurations from classical molecular dynamics simulations of metallic systems over a large temperature range principal component analysis is used to dramatically reduce the dimensionality of the feature space across the samples using an orthogonal linear transformation that preserves the statistical variance of the data under the condition that the new feature space is linearly independent from there kmeans clustering is used to partition the samples into solid and liquid phases through a criterion motivated by the geometry of the reduced feature space of the samples allowing for an estimation of the melting point transition this pattern criterion is conceptually similar to how humans interpret the data but with far greater throughput as the shapes of the radial distributions are different for each phase and easily distinguishable by humans the transition temperature estimates derived from this machine learning approach produce comparable results to other methods on similarly small system sizes these results show that machine learning approaches can be applied to structural changes in physical systems | [['unsupervised', 'machine', 'learning', 'methods', 'are', 'used', 'to', 'identify', 'structural', 'changes', 'using', 'the', 'melting', 'point', 'transition', 'in', 'classical', 'molecular', 'dynamics', 'simulations', 'as', 'an', 'example', 'application', 'of', 'the', 'approach', 'dimensionality', 'reduction', 'and', 'clustering', 'methods', 'are', 'applied', 'to', 'instantaneous', 'radial', 'distributions', 'of', 'atomic', 'configurations', 'from', 'classical', 'molecular', 'dynamics', 'simulations', 'of', 'metallic', 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1,802.10128 | Topological first-order solitons in a gauged $CP(2)$ model with the
Maxwell-Chern-Simons action | We verify the existence of radially symmetric first-order solitons in a
gauged $CP(2)$ scenario in which the dynamics of the Abelian gauge field is
controlled by the Maxwell-Chern-Simons action. We implement the standard
Bogomol'nyi-Prasad-Sommerfield (BPS) formalism, from which we obtain a
well-defined lower bound for the corresponding energy (i.e. the Bogomol'nyi
bound) and the first-order equations saturating it. We solve these first-order
equations numerically by means of the finite-difference scheme, therefore
obtaining regular solutions of the effective model, their energy being
quantized according the winding number rotulating the final configurations, as
expected. We depict the numerical solutions, whilst commenting on the main
properties they engender.
| hep-th nlin.PS | we verify the existence of radially symmetric firstorder solitons in a gauged cp2 scenario in which the dynamics of the abelian gauge field is controlled by the maxwellchernsimons action we implement the standard bogomolnyiprasadsommerfield bps formalism from which we obtain a welldefined lower bound for the corresponding energy ie the bogomolnyi bound and the firstorder equations saturating it we solve these firstorder equations numerically by means of the finitedifference scheme therefore obtaining regular solutions of the effective model their energy being quantized according the winding number rotulating the final configurations as expected we depict the numerical solutions whilst commenting on the main properties they engender | [['we', 'verify', 'the', 'existence', 'of', 'radially', 'symmetric', 'firstorder', 'solitons', 'in', 'a', 'gauged', 'cp2', 'scenario', 'in', 'which', 'the', 'dynamics', 'of', 'the', 'abelian', 'gauge', 'field', 'is', 'controlled', 'by', 'the', 'maxwellchernsimons', 'action', 'we', 'implement', 'the', 'standard', 'bogomolnyiprasadsommerfield', 'bps', 'formalism', 'from', 'which', 'we', 'obtain', 'a', 'welldefined', 'lower', 'bound', 'for', 'the', 'corresponding', 'energy', 'ie', 'the', 'bogomolnyi', 'bound', 'and', 'the', 'firstorder', 'equations', 'saturating', 'it', 'we', 'solve', 'these', 'firstorder', 'equations', 'numerically', 'by', 'means', 'of', 'the', 'finitedifference', 'scheme', 'therefore', 'obtaining', 'regular', 'solutions', 'of', 'the', 'effective', 'model', 'their', 'energy', 'being', 'quantized', 'according', 'the', 'winding', 'number', 'rotulating', 'the', 'final', 'configurations', 'as', 'expected', 'we', 'depict', 'the', 'numerical', 'solutions', 'whilst', 'commenting', 'on', 'the', 'main', 'properties', 'they', 'engender']] | [-0.15634788981501166, 0.1404885043235621, -0.08493782895787333, 0.11081343303242018, -0.07322149971374668, -0.12896175522249764, 0.02961722691095649, 0.29132746734942955, -0.2135514420873593, -0.3168717401388746, 0.09045118029686049, -0.23435320347869912, -0.14805608883034438, 0.13851307755192885, 0.0027160823195187664, 0.07386061593066327, -0.012100771891150193, 0.0775621381874841, -0.0850269477042065, -0.2541563943780672, 0.33312946118754694, -0.009083546326459887, 0.2825382205012899, 0.015582114820762608, 0.08597334109407921, -0.04680569269112311, 0.013664586849559922, 0.02205836140854864, -0.17429472135532145, 0.09457406973636423, 0.182253660074471, 0.06392500151503974, 0.17523744417121634, -0.4422086659066666, -0.16724994774043667, 0.09704784092117244, 0.16198197652388793, 0.18103586133041133, -0.05004172136922044, -0.32161606646080215, 0.10200766782061411, -0.15850504494469184, -0.18598738194179112, -0.11960288064214043, -0.023591682022715058, 0.03413790414253107, -0.2346305725178144, 0.06728936849734825, 0.07100968222724847, -0.01288234474710547, -0.12419240718456702, -0.056352866535934694, -0.07982054469623388, 0.060651664286314584, 0.060727215742540114, -0.005617254216653796, 0.06361235094776091, -0.17245432010251813, -0.11182885684963996, 0.36116888248272094, -0.0848980466208349, -0.27000678903333697, 0.1428298460422621, -0.09086125156877992, -0.07959557586582378, 0.1416409329036609, 0.1295621783221857, 0.22367870495117342, -0.10518177929155242, 0.13633100812876364, -0.07394457753532781, 0.14678138151514128, 0.08388963707525712, 0.01346323599976201, 0.22771143410892153, 0.11706559006751587, 0.06391441346540187, 0.16325074961283603, -0.005634740606183186, -0.18721812923635858, -0.37038507242687047, -0.12008202603944412, -0.1266242437861645, 0.06612382298604083, -0.09091030682597753, -0.16937759612651113, 0.40268542304927624, 0.13281286152330443, 0.145004107146703, 0.08072257661786772, 0.26039249386387664, 0.1934655212177089, 0.04633220309411767, 0.09415939696079406, 0.26368293582569236, 0.15495569904585585, 0.08793975979250927, -0.26768828774668063, -0.05625891894137917, 0.1660037949564307] |
1,802.10129 | Comparative study of DFT+$U$ functionals for non-collinear magnetism | We performed comparative analysis for DFT+$U$ functionals to better
understand their applicability to non-collinear magnetism. Taking LiNiPO$_4$
and Sr$_2$IrO$_4$ as examples, we investigated the results out of two
formalisms based on charge-only density and spin density functional plus $U$
calculations. Our results show that the ground state spin order in terms of
tilting angle is strongly dependent on Hund $J$. In particular, the opposite
behavior of canting angles as a function of $J$ is found for LiNiPO$_4$. The
dependence on the other physical parameters such as Hubbard $U$ and Slater
parameterization $F^4/F^2$ is investigated. We also discuss the formal aspects
of these functional dependences as well as parameter dependences. The current
study provides useful information and important intuition for the
first-principles calculation of non-collinear magnetic materials.
| cond-mat.str-el cond-mat.mtrl-sci | we performed comparative analysis for dftu functionals to better understand their applicability to noncollinear magnetism taking linipo_4 and sr_2iro_4 as examples we investigated the results out of two formalisms based on chargeonly density and spin density functional plus u calculations our results show that the ground state spin order in terms of tilting angle is strongly dependent on hund j in particular the opposite behavior of canting angles as a function of j is found for linipo_4 the dependence on the other physical parameters such as hubbard u and slater parameterization f4f2 is investigated we also discuss the formal aspects of these functional dependences as well as parameter dependences the current study provides useful information and important intuition for the firstprinciples calculation of noncollinear magnetic materials | [['we', 'performed', 'comparative', 'analysis', 'for', 'dftu', 'functionals', 'to', 'better', 'understand', 'their', 'applicability', 'to', 'noncollinear', 'magnetism', 'taking', 'linipo_4', 'and', 'sr_2iro_4', 'as', 'examples', 'we', 'investigated', 'the', 'results', 'out', 'of', 'two', 'formalisms', 'based', 'on', 'chargeonly', 'density', 'and', 'spin', 'density', 'functional', 'plus', 'u', 'calculations', 'our', 'results', 'show', 'that', 'the', 'ground', 'state', 'spin', 'order', 'in', 'terms', 'of', 'tilting', 'angle', 'is', 'strongly', 'dependent', 'on', 'hund', 'j', 'in', 'particular', 'the', 'opposite', 'behavior', 'of', 'canting', 'angles', 'as', 'a', 'function', 'of', 'j', 'is', 'found', 'for', 'linipo_4', 'the', 'dependence', 'on', 'the', 'other', 'physical', 'parameters', 'such', 'as', 'hubbard', 'u', 'and', 'slater', 'parameterization', 'f4f2', 'is', 'investigated', 'we', 'also', 'discuss', 'the', 'formal', 'aspects', 'of', 'these', 'functional', 'dependences', 'as', 'well', 'as', 'parameter', 'dependences', 'the', 'current', 'study', 'provides', 'useful', 'information', 'and', 'important', 'intuition', 'for', 'the', 'firstprinciples', 'calculation', 'of', 'noncollinear', 'magnetic', 'materials']] | [-0.1304590589478612, 0.10363405637443066, -0.04550575771182776, 0.09692748649651185, -0.07495059961453081, -0.08633010823652149, 0.06276887134462596, 0.3799304922819138, -0.2291662940979004, -0.3056448414996266, 0.013620789648965001, -0.3130943987295032, -0.15767283990979195, 0.17923583293519915, 0.06975915133580565, 0.02497032931819558, -0.009155740931630135, -0.013152976222336292, -0.1560319938957691, -0.18306533217150717, 0.31135120262019333, 0.02690535740181804, 0.2864022972197272, 0.12254756289999932, 0.05827412712574005, 0.07694210588932038, 0.04587582453712821, 0.04563122673332691, -0.19541137504793005, 0.05741453316248953, 0.26353410485386847, -0.010489594783633947, 0.2192644767984748, -0.43311083310842513, -0.20478645449876784, -0.030344991870224478, 0.0916304500773549, 0.09461248199641704, -0.02319506920594722, -0.26914120350405574, 0.03606147575750947, -0.17336093050800264, -0.134215686715208, -0.19789747224003076, 0.022520058766007423, 0.06131538103055209, -0.2692986078336835, 0.08850863987742923, 0.05091090963827446, 0.08636751622095472, -0.09172343529015779, -0.22465705993771554, -0.08398512614239008, 0.0815165398339741, 0.09710153539665044, 0.0631510008322075, 0.13616789405047894, -0.10644270793348551, -0.12133573821187019, 0.36556168979406356, -0.06008152491878718, -0.18552627751231193, 0.17791429670527578, -0.15342597418278456, -0.14412744342535735, 0.034670906130224464, 0.09810414942912757, 0.12056635148823261, -0.11897019594628364, 0.1020637041516602, -0.018026853579329326, 0.1554547872953117, -0.0077467171549797055, 0.08415207557752728, 0.1724857098441571, 0.16469953894801437, 0.03532522571645677, 0.10005332023324445, -0.09884412269480526, -0.12040818768180907, -0.2819308102428913, -0.12909934195876122, -0.20955207989737393, 0.04560163841210306, -0.08346031501470133, -0.1632441950812936, 0.426710159951821, 0.16191759303957223, 0.15699438114091754, -0.04573222040105611, 0.24645010238885878, 0.10819921277090908, 0.006081152088940144, 0.004122839408926666, 0.23234991449862719, 0.18289254452101886, 0.0692325626462698, -0.2713594785705209, 0.09506908873841166, 0.04548423871770501] |
1,802.1013 | Phases of ${\cal N}=1$ Theories in 2+1 Dimensions | We study the dynamics of 2+1 dimensional theories with ${\cal N}=1$
supersymmetry. In these theories the supersymmetric ground states behave
discontinuously at co-dimension one walls in the space of couplings, with new
vacua coming in from infinity in field space. We show that the dynamics near
these walls is calculable: the two-loop effective potential yields exact
results about the ground states near the walls. Far away from the walls the
ground states can be inferred by decoupling arguments. In this way, we are able
to follow the ground states of ${\cal N}=1$ theories in 2+1 dimensions and
construct the infrared phases of these theories. We study two examples in
detail: Adjoint SQCD and SQCD with one fundamental quark. In Adjoint QCD we
show that for sufficiently small Chern-Simons level the theory has a
non-perturbative metastable supersymmetry-breaking ground state. We also
briefly discuss the critical points of this theory. For SQCD with one quark we
establish an infrared duality between a $U(N)$ gauge theory and an $SU(N)$
gauge theory. The duality crucially involves the vacua that appear from
infinity near the walls.
| hep-th | we study the dynamics of 21 dimensional theories with cal n1 supersymmetry in these theories the supersymmetric ground states behave discontinuously at codimension one walls in the space of couplings with new vacua coming in from infinity in field space we show that the dynamics near these walls is calculable the twoloop effective potential yields exact results about the ground states near the walls far away from the walls the ground states can be inferred by decoupling arguments in this way we are able to follow the ground states of cal n1 theories in 21 dimensions and construct the infrared phases of these theories we study two examples in detail adjoint sqcd and sqcd with one fundamental quark in adjoint qcd we show that for sufficiently small chernsimons level the theory has a nonperturbative metastable supersymmetrybreaking ground state we also briefly discuss the critical points of this theory for sqcd with one quark we establish an infrared duality between a un gauge theory and an sun gauge theory the duality crucially involves the vacua that appear from infinity near the walls | [['we', 'study', 'the', 'dynamics', 'of', '21', 'dimensional', 'theories', 'with', 'cal', 'n1', 'supersymmetry', 'in', 'these', 'theories', 'the', 'supersymmetric', 'ground', 'states', 'behave', 'discontinuously', 'at', 'codimension', 'one', 'walls', 'in', 'the', 'space', 'of', 'couplings', 'with', 'new', 'vacua', 'coming', 'in', 'from', 'infinity', 'in', 'field', 'space', 'we', 'show', 'that', 'the', 'dynamics', 'near', 'these', 'walls', 'is', 'calculable', 'the', 'twoloop', 'effective', 'potential', 'yields', 'exact', 'results', 'about', 'the', 'ground', 'states', 'near', 'the', 'walls', 'far', 'away', 'from', 'the', 'walls', 'the', 'ground', 'states', 'can', 'be', 'inferred', 'by', 'decoupling', 'arguments', 'in', 'this', 'way', 'we', 'are', 'able', 'to', 'follow', 'the', 'ground', 'states', 'of', 'cal', 'n1', 'theories', 'in', '21', 'dimensions', 'and', 'construct', 'the', 'infrared', 'phases', 'of', 'these', 'theories', 'we', 'study', 'two', 'examples', 'in', 'detail', 'adjoint', 'sqcd', 'and', 'sqcd', 'with', 'one', 'fundamental', 'quark', 'in', 'adjoint', 'qcd', 'we', 'show', 'that', 'for', 'sufficiently', 'small', 'chernsimons', 'level', 'the', 'theory', 'has', 'a', 'nonperturbative', 'metastable', 'supersymmetrybreaking', 'ground', 'state', 'we', 'also', 'briefly', 'discuss', 'the', 'critical', 'points', 'of', 'this', 'theory', 'for', 'sqcd', 'with', 'one', 'quark', 'we', 'establish', 'an', 'infrared', 'duality', 'between', 'a', 'un', 'gauge', 'theory', 'and', 'an', 'sun', 'gauge', 'theory', 'the', 'duality', 'crucially', 'involves', 'the', 'vacua', 'that', 'appear', 'from', 'infinity', 'near', 'the', 'walls']] | [-0.1234974416682898, 0.25249230554883717, -0.08792966212641554, 0.1056701566744853, -0.011059145630949604, -0.12620102798370697, 0.035150091055760065, 0.3351211617623574, -0.1861740110740477, -0.2402894326912764, 0.09073452499581923, -0.2955521469657922, -0.14737932183599686, 0.06403080722605244, -0.03252363296994908, 0.011003849941572092, -0.008502149858604603, 0.05961718879002069, -0.0926335290015176, -0.2317990267145041, 0.34622246203481, -0.07223064071133486, 0.24362704970807, 0.07716678525449822, 0.053643551010005584, -0.03317873218438964, 0.06431342349053253, -0.021080191774893224, -0.1593692977880163, 0.10744396648472639, 0.24600873534369555, 0.045855474143767554, 0.13725468329442098, -0.46346352048712214, -0.18625872872785268, 0.08876997782298536, 0.17102104005900995, 0.16961675450380748, -0.011741992744786963, -0.3210717058375231, 0.06197920168919787, -0.14255118432975097, -0.21749598936702624, -0.1019148288078565, -0.038976645780835324, -0.10558923003804041, -0.2339944361107043, 0.0348717335940246, -0.04309061366051065, 0.05110843216316023, -0.06445992511384528, -0.10384709725686406, -0.09880924899065456, 0.10680608507966138, 0.13440346000433093, 0.059283508060696835, 0.1036784127020169, -0.2354449344564886, -0.165312879920155, 0.3638585667583824, -0.06377219334656363, -0.18498563474733692, 0.22756521107670105, -0.18355888366136117, -0.17783902420595452, 0.10408305951834075, 0.09510115483256047, 0.16181360937922534, -0.06717878483359327, 0.22206743432945977, -0.03860037056060292, 0.1408182768799488, 0.0781287918541354, 0.061412098099740006, 0.26578843969728244, 0.10026915443968543, 0.05828234893642881, 0.1379210537058965, -0.02895045027044185, -0.15749297187617306, -0.4227976871458865, -0.12476683540323759, -0.12788408802492926, 0.090655929021774, -0.11867986960333028, -0.12630055981897395, 0.3555938419795888, 0.15542060357308818, 0.1868830106442393, 0.044265235455202466, 0.20487402060496215, 0.10022851035451691, 0.040974218867852956, 0.0533017325054247, 0.28420614827268637, 0.1380265402499566, 0.06440271421217293, -0.23920470186141293, -0.15494187159537084, 0.16692978872541978] |
1,802.10131 | Broadly heterogeneous network topology begets order-based representation
by privileged neurons | How spiking activity reverberates through neuronal networks, how evoked and
spontaneous activity interact and blend, and how the combined activities
represent external stimulation are pivotal questions in neuroscience. We
simulated minimal models of unstructured spiking networks in silico, asking
whether and how gentle external stimulation might be subsequently reflected in
spontaneous activity fluctuations. Consistent with earlier findings in silico
and in vitro, we observe a privileged sub-population of 'pioneer neurons' that,
by their firing order, reliably encode previous external stimulation. We show
that the distinctive role of pioneer neurons is owed to a combination of
exceptional sensitivity to, and pronounced influence on, network activity. We
further show that broadly heterogeneous connection topology - a broad "middle
class" in degree of connectedness - not only increases the number of 'pioneer
neurons' in unstructured networks, but also renders the emergence of 'pioneer
neurons' more robust to changes in the excitatory-inhibitory balance. In
conclusion, we offer a minimal model for the emergence and representational
role of 'pioneer neurons', as observed experimentally in vitro. In addition, we
show how broadly heterogeneous connectivity can enhance the representational
capacity of unstructured networks.
| q-bio.NC | how spiking activity reverberates through neuronal networks how evoked and spontaneous activity interact and blend and how the combined activities represent external stimulation are pivotal questions in neuroscience we simulated minimal models of unstructured spiking networks in silico asking whether and how gentle external stimulation might be subsequently reflected in spontaneous activity fluctuations consistent with earlier findings in silico and in vitro we observe a privileged subpopulation of pioneer neurons that by their firing order reliably encode previous external stimulation we show that the distinctive role of pioneer neurons is owed to a combination of exceptional sensitivity to and pronounced influence on network activity we further show that broadly heterogeneous connection topology a broad middle class in degree of connectedness not only increases the number of pioneer neurons in unstructured networks but also renders the emergence of pioneer neurons more robust to changes in the excitatoryinhibitory balance in conclusion we offer a minimal model for the emergence and representational role of pioneer neurons as observed experimentally in vitro in addition we show how broadly heterogeneous connectivity can enhance the representational capacity of unstructured networks | [['how', 'spiking', 'activity', 'reverberates', 'through', 'neuronal', 'networks', 'how', 'evoked', 'and', 'spontaneous', 'activity', 'interact', 'and', 'blend', 'and', 'how', 'the', 'combined', 'activities', 'represent', 'external', 'stimulation', 'are', 'pivotal', 'questions', 'in', 'neuroscience', 'we', 'simulated', 'minimal', 'models', 'of', 'unstructured', 'spiking', 'networks', 'in', 'silico', 'asking', 'whether', 'and', 'how', 'gentle', 'external', 'stimulation', 'might', 'be', 'subsequently', 'reflected', 'in', 'spontaneous', 'activity', 'fluctuations', 'consistent', 'with', 'earlier', 'findings', 'in', 'silico', 'and', 'in', 'vitro', 'we', 'observe', 'a', 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1,802.10132 | Occurrence Rates from Direct Imaging Surveys | The occurrence rate of young giant planets from direct imaging surveys is a
fundamental tracer of the efficiency with which planets form and migrate at
wide orbital distances. These measurements have progressively converged to a
value of about 1% for the most massive planets ($\approx$5-13 $M_\mathrm{Jup}$)
averaged over all stellar masses at separations spanning a few tens to a few
hundreds of AU. The subtler statistical properties of this population are
beginning to emerge with ever-increasing sample sizes: there is tentative
evidence that planets on wide orbits are more frequent around stars that
possess debris disks; brown dwarf companions exist at comparable (or perhaps
slightly higher) rates as their counterparts in the planetary-mass regime; and
the substellar companion mass function appears to be smooth and may extend down
to the opacity limit for fragmentation. Within a few years, the conclusion of
second-generation direct imaging surveys will enable more definitive
interpretations with the ultimate goal of identifying the dominant origin of
this population and uncovering its relationship to planets at smaller
separations.
| astro-ph.EP | the occurrence rate of young giant planets from direct imaging surveys is a fundamental tracer of the efficiency with which planets form and migrate at wide orbital distances these measurements have progressively converged to a value of about 1 for the most massive planets approx513 m_mathrmjup averaged over all stellar masses at separations spanning a few tens to a few hundreds of au the subtler statistical properties of this population are beginning to emerge with everincreasing sample sizes there is tentative evidence that planets on wide orbits are more frequent around stars that possess debris disks brown dwarf companions exist at comparable or perhaps slightly higher rates as their counterparts in the planetarymass regime and the substellar companion mass function appears to be smooth and may extend down to the opacity limit for fragmentation within a few years the conclusion of secondgeneration direct imaging surveys will enable more definitive interpretations with the ultimate goal of identifying the dominant origin of this population and uncovering its relationship to planets at smaller separations | [['the', 'occurrence', 'rate', 'of', 'young', 'giant', 'planets', 'from', 'direct', 'imaging', 'surveys', 'is', 'a', 'fundamental', 'tracer', 'of', 'the', 'efficiency', 'with', 'which', 'planets', 'form', 'and', 'migrate', 'at', 'wide', 'orbital', 'distances', 'these', 'measurements', 'have', 'progressively', 'converged', 'to', 'a', 'value', 'of', 'about', '1', 'for', 'the', 'most', 'massive', 'planets', 'approx513', 'm_mathrmjup', 'averaged', 'over', 'all', 'stellar', 'masses', 'at', 'separations', 'spanning', 'a', 'few', 'tens', 'to', 'a', 'few', 'hundreds', 'of', 'au', 'the', 'subtler', 'statistical', 'properties', 'of', 'this', 'population', 'are', 'beginning', 'to', 'emerge', 'with', 'everincreasing', 'sample', 'sizes', 'there', 'is', 'tentative', 'evidence', 'that', 'planets', 'on', 'wide', 'orbits', 'are', 'more', 'frequent', 'around', 'stars', 'that', 'possess', 'debris', 'disks', 'brown', 'dwarf', 'companions', 'exist', 'at', 'comparable', 'or', 'perhaps', 'slightly', 'higher', 'rates', 'as', 'their', 'counterparts', 'in', 'the', 'planetarymass', 'regime', 'and', 'the', 'substellar', 'companion', 'mass', 'function', 'appears', 'to', 'be', 'smooth', 'and', 'may', 'extend', 'down', 'to', 'the', 'opacity', 'limit', 'for', 'fragmentation', 'within', 'a', 'few', 'years', 'the', 'conclusion', 'of', 'secondgeneration', 'direct', 'imaging', 'surveys', 'will', 'enable', 'more', 'definitive', 'interpretations', 'with', 'the', 'ultimate', 'goal', 'of', 'identifying', 'the', 'dominant', 'origin', 'of', 'this', 'population', 'and', 'uncovering', 'its', 'relationship', 'to', 'planets', 'at', 'smaller', 'separations']] | [-0.11189244414049694, 0.15453073802979334, -0.05513838828979608, 0.09825179563725696, -0.11901406820534784, -0.05752802794689641, 0.08849770772709127, 0.3594958027715192, -0.18820396633613307, -0.37003855352454323, 0.09378261100569302, -0.29117362290511234, -0.03331533840614344, 0.22467643216882338, -0.03232371783404447, 0.0003609079131445683, 0.13518464701346067, -0.043463752163327575, -0.06437446971574579, -0.25267038025811095, 0.28542441334506935, 0.06854567122371757, 0.059766582765287776, -0.013716234072275898, 0.009787568225360968, -0.08809539165402598, -0.013420643169871148, -0.06465041493613492, -0.17825755376740263, 0.05779994565938764, 0.27492924996596924, 0.11588908751933452, 0.2996401381377569, -0.3553262174949101, -0.196770346914555, 0.09281894241130965, 0.19421572165413048, 0.062228384274331965, -0.053761225217193204, -0.23937837065074263, 0.14314856631561484, -0.1848507347420844, -0.19707305762807237, 0.020827765215910725, 0.10251487828585702, 0.011203678878133788, -0.21767194629372918, 0.13579881773124833, 0.047240450367441074, 0.11666383020689382, -0.08689012178767691, -0.17290509307537885, -0.04099100028055117, 0.11983299286186914, 0.044727686757002685, 0.03836743755622164, 0.16479233646327082, -0.13641775693223976, -0.025134644316345014, 0.39059842264498856, -0.06200970801428946, -0.05462895939400529, 0.3389085232115844, -0.26085752189186784, -0.13755763400729526, 0.19256087658543358, 0.1826140561620431, 0.1718223835547071, -0.15900945909430875, -0.05075630773105385, -0.006478535440777812, 0.19470742109834271, 0.11571845179149771, 0.10985919616239913, 0.4303341215630473, 0.17328488509365877, 0.08675753861487678, 0.018945851716596414, -0.19915190543020692, -0.08744077825480524, -0.17696716159801273, -0.10702160383739015, -0.14924585278597935, 0.080827736240976, -0.11299763682695543, -0.11812194621135645, 0.3204857536262887, 0.16584470879135874, 0.21046985652955139, 0.09072951375821825, 0.2636658927795532, 0.06792489256134586, 0.18010880853569902, 0.07254924361443366, 0.3199239094522508, 0.15548699365737026, 0.08585906348067938, -0.16169794537503657, 0.07033659385376856, -0.05115198640919784] |
1,802.10133 | Coarse-graining Langevin dynamics using reduced-order techniques | This paper considers the reduction of the Langevin equation arising from
bio-molecular models. To facilitate the construction and implementation of the
reduced models, the problem is formulated as a reduced-order modeling problem.
The reduced models can then be directly obtained from a Galerkin projection to
appropriately defined Krylov subspaces. The equivalence to a moment-matching
procedure, previously implemented in , 2), is proved. A particular emphasis is
placed on the reduction of the stochastic noise, which is absent in many
order-reduction problems. In particular, for order less than six we can show
the reduced model obtained from the subspace projection automatically satisfies
the fluctuation-dissipation theorem. Details for the implementations, including
a bi-orthogonalization procedure and the minimization of the number of matrix
multiplications, will be discussed as well.
| math.NA | this paper considers the reduction of the langevin equation arising from biomolecular models to facilitate the construction and implementation of the reduced models the problem is formulated as a reducedorder modeling problem the reduced models can then be directly obtained from a galerkin projection to appropriately defined krylov subspaces the equivalence to a momentmatching procedure previously implemented in 2 is proved a particular emphasis is placed on the reduction of the stochastic noise which is absent in many orderreduction problems in particular for order less than six we can show the reduced model obtained from the subspace projection automatically satisfies the fluctuationdissipation theorem details for the implementations including a biorthogonalization procedure and the minimization of the number of matrix multiplications will be discussed as well | [['this', 'paper', 'considers', 'the', 'reduction', 'of', 'the', 'langevin', 'equation', 'arising', 'from', 'biomolecular', 'models', 'to', 'facilitate', 'the', 'construction', 'and', 'implementation', 'of', 'the', 'reduced', 'models', 'the', 'problem', 'is', 'formulated', 'as', 'a', 'reducedorder', 'modeling', 'problem', 'the', 'reduced', 'models', 'can', 'then', 'be', 'directly', 'obtained', 'from', 'a', 'galerkin', 'projection', 'to', 'appropriately', 'defined', 'krylov', 'subspaces', 'the', 'equivalence', 'to', 'a', 'momentmatching', 'procedure', 'previously', 'implemented', 'in', '2', 'is', 'proved', 'a', 'particular', 'emphasis', 'is', 'placed', 'on', 'the', 'reduction', 'of', 'the', 'stochastic', 'noise', 'which', 'is', 'absent', 'in', 'many', 'orderreduction', 'problems', 'in', 'particular', 'for', 'order', 'less', 'than', 'six', 'we', 'can', 'show', 'the', 'reduced', 'model', 'obtained', 'from', 'the', 'subspace', 'projection', 'automatically', 'satisfies', 'the', 'fluctuationdissipation', 'theorem', 'details', 'for', 'the', 'implementations', 'including', 'a', 'biorthogonalization', 'procedure', 'and', 'the', 'minimization', 'of', 'the', 'number', 'of', 'matrix', 'multiplications', 'will', 'be', 'discussed', 'as', 'well']] | [-0.0770830690575343, 0.05039964760503461, -0.06606914154103687, 0.07985701181666716, -0.03625026674971225, -0.13254085611767932, 0.002209355882857175, 0.31153201070546566, -0.3336140507711999, -0.2882131724993909, 0.15575480507029552, -0.22485834712372912, -0.15734819406568404, 0.2260528319053382, -0.10256566657053848, 0.07298641167055335, 0.08784439760605775, 0.008882079322281624, -0.1272762200915754, -0.23858172513991444, 0.28577914157311524, 0.04747195145295512, 0.254624642409204, -0.005670971340394669, 0.14494425814688927, -0.006113804944400345, -0.04533364287307186, 0.045567369509127834, -0.056418841548879904, 0.13559017280086635, 0.264752469311163, 0.13800797065825113, 0.271341176713254, -0.41923246863147906, -0.22043750902817155, 0.12482144552162819, 0.14700088854254817, 0.1499485774294308, 0.013444479516399424, -0.27104344043783063, 0.08214258020480854, -0.16941535156670837, -0.11281057696549161, -0.06709852802469546, -0.05732981621422955, 0.006822941483725968, -0.29477737570602086, 0.050495281090749605, 0.0764466885518613, 0.02632946050688324, -0.058602394476052255, -0.1485634744955948, -0.007951516306944071, 0.057062990771937036, 0.014959545144172866, 0.02597314928237709, 0.11947223540459338, -0.08579380405999179, -0.09700350075464455, 0.4158481934873928, -0.046153548192031, -0.28616438896184965, 0.15827952711392315, -0.05255780054346448, -0.13659605197796237, 0.10752729094219243, 0.16588258350478305, 0.1208824492059648, -0.1655120252173454, 0.1331909205004077, -0.02781955598883571, 0.14864023669712967, 0.03625297079223298, -0.015417587545309816, 0.09181338128062987, 0.18636906069643314, 0.08588652080629065, 0.15626857543717168, -0.04578680076238309, -0.1031191738171225, -0.2973381960013461, -0.12887238013589072, -0.19412234574255924, 0.02058094689592479, -0.08629365794847892, -0.14203178348825238, 0.3798255465728524, 0.1526554092772365, 0.18724042500158952, 0.06063822988371906, 0.29454820030443973, 0.18193003688112744, 0.056691594511991544, 0.05138784312763282, 0.19984865801844506, 0.15806516842360818, 0.059949361632818415, -0.206157733552954, 0.04813238085367747, 0.15808358111591528] |
1,802.10134 | Transparent Voting Platform Based on Permissioned Blockchain | Since 2004, different research was handling the challenges in the centralized
voting systems, e-voting protocols and recently the decentralized voting. So
electronic voting puts forward some difficulties regarding the voter anonymity,
the secure casting of the votes and to prevent the voting process from
frauding. The Decentralized property of the technology called "blockchain"
could have the solution for many of the challenges in voting research area and
brings a new secure mechanism of safe and transparent voting. In this paper, a
broad comparison between ongoing voting systems has studied by analyzing their
structure and the drawbacks that should consider in future to improve the whole
election process from keeping the privacy of the voter, casting a vote with the
possibility to check if it was counted correctly to publishing the results. The
result of the paper will give a new approach to extend the target of the
election from small scale to large scale despite the fact of Ethereum
limitation which can cast on the blockchain just five votes per minute. The
primary challenge is to find an answer for this question: "How to balance
between voter privacy and transparency without breaking the important rule
where the voter can proof for a specific candidate that he voted for him in a
bribe situation?".
| cs.CY cs.CR | since 2004 different research was handling the challenges in the centralized voting systems evoting protocols and recently the decentralized voting so electronic voting puts forward some difficulties regarding the voter anonymity the secure casting of the votes and to prevent the voting process from frauding the decentralized property of the technology called blockchain could have the solution for many of the challenges in voting research area and brings a new secure mechanism of safe and transparent voting in this paper a broad comparison between ongoing voting systems has studied by analyzing their structure and the drawbacks that should consider in future to improve the whole election process from keeping the privacy of the voter casting a vote with the possibility to check if it was counted correctly to publishing the results the result of the paper will give a new approach to extend the target of the election from small scale to large scale despite the fact of ethereum limitation which can cast on the blockchain just five votes per minute the primary challenge is to find an answer for this question how to balance between voter privacy and transparency without breaking the important rule where the voter can proof for a specific candidate that he voted for him in a bribe situation | [['since', '2004', 'different', 'research', 'was', 'handling', 'the', 'challenges', 'in', 'the', 'centralized', 'voting', 'systems', 'evoting', 'protocols', 'and', 'recently', 'the', 'decentralized', 'voting', 'so', 'electronic', 'voting', 'puts', 'forward', 'some', 'difficulties', 'regarding', 'the', 'voter', 'anonymity', 'the', 'secure', 'casting', 'of', 'the', 'votes', 'and', 'to', 'prevent', 'the', 'voting', 'process', 'from', 'frauding', 'the', 'decentralized', 'property', 'of', 'the', 'technology', 'called', 'blockchain', 'could', 'have', 'the', 'solution', 'for', 'many', 'of', 'the', 'challenges', 'in', 'voting', 'research', 'area', 'and', 'brings', 'a', 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1,802.10135 | Microsoft Malware Classification Challenge | The Microsoft Malware Classification Challenge was announced in 2015 along
with a publication of a huge dataset of nearly 0.5 terabytes, consisting of
disassembly and bytecode of more than 20K malware samples. Apart from serving
in the Kaggle competition, the dataset has become a standard benchmark for
research on modeling malware behaviour. To date, the dataset has been cited in
more than 50 research papers. Here we provide a high-level comparison of the
publications citing the dataset. The comparison simplifies finding potential
research directions in this field and future performance evaluation of the
dataset.
| cs.CR | the microsoft malware classification challenge was announced in 2015 along with a publication of a huge dataset of nearly 05 terabytes consisting of disassembly and bytecode of more than 20k malware samples apart from serving in the kaggle competition the dataset has become a standard benchmark for research on modeling malware behaviour to date the dataset has been cited in more than 50 research papers here we provide a highlevel comparison of the publications citing the dataset the comparison simplifies finding potential research directions in this field and future performance evaluation of the dataset | [['the', 'microsoft', 'malware', 'classification', 'challenge', 'was', 'announced', 'in', '2015', 'along', 'with', 'a', 'publication', 'of', 'a', 'huge', 'dataset', 'of', 'nearly', '05', 'terabytes', 'consisting', 'of', 'disassembly', 'and', 'bytecode', 'of', 'more', 'than', '20k', 'malware', 'samples', 'apart', 'from', 'serving', 'in', 'the', 'kaggle', 'competition', 'the', 'dataset', 'has', 'become', 'a', 'standard', 'benchmark', 'for', 'research', 'on', 'modeling', 'malware', 'behaviour', 'to', 'date', 'the', 'dataset', 'has', 'been', 'cited', 'in', 'more', 'than', '50', 'research', 'papers', 'here', 'we', 'provide', 'a', 'highlevel', 'comparison', 'of', 'the', 'publications', 'citing', 'the', 'dataset', 'the', 'comparison', 'simplifies', 'finding', 'potential', 'research', 'directions', 'in', 'this', 'field', 'and', 'future', 'performance', 'evaluation', 'of', 'the', 'dataset']] | [-0.08295995936025569, -0.007594825472048623, -0.04581875593074538, 0.019966255847434018, -0.10094341629759428, -0.1118640196707813, 0.061774854994121386, 0.36411701371160116, -0.1386606925305851, -0.40900736799998644, 0.0880980585563056, -0.43259458355803754, -0.06425170242251392, 0.2983852822402928, -0.08655079227792932, 0.03324707834287844, 0.15490693171964365, 0.04719900238566705, -0.03974557467835381, -0.34680661085517483, 0.24896581236154158, 0.07785433626416674, 0.342490425387873, 0.053332436790174624, 0.020526400950558958, -0.06354650891103604, -0.09704560739176467, -0.018460669376431628, -0.06484258093374554, 0.14411811710662267, 0.3099931470376063, 0.21227073255539972, 0.3595188093034828, -0.35047212854384424, -0.16841031811101007, 0.05574598522024586, 0.12548249690456592, 0.13451095647673975, -0.0914548684801396, -0.349930910192965, 0.08115055858333436, -0.23394638793344827, -0.035015787515650564, -0.0591622430860917, 0.09078824370133473, -0.05043542373707478, -0.1836464267144812, 0.05382676498513629, 0.026999928354424364, 0.1972019370506577, -0.03564404396023205, -0.16876285440447006, 0.015212362726278444, 0.1581543996494184, 0.09148358474262654, 0.10801442390545568, 0.1482668408103525, -0.1573961536434697, -0.1553732575204699, 0.37713596327824794, -0.07192919177233559, -0.07486462339441827, 0.19247364226054955, -0.06357536354211178, -0.15153112379893502, 0.11609610534728841, 0.24547044766393114, 0.09569554848774792, -0.22131658323168596, 0.01796091277464392, -0.0694800220786574, 0.1997889338774567, 0.08762229441050837, -0.06269064003680931, 0.17025101769646195, 0.32584326458658947, 0.004745150314386379, 0.15189164888827092, -0.11526223177714472, -0.054684074407324514, -0.18176937801144186, -0.15459035572774232, -0.1550335398270808, 0.015830946796415175, -0.04183669796955346, -0.14890209398172954, 0.47494719537009705, 0.23415715333589532, 0.12845136342134247, 0.03446483651691295, 0.29735089039945223, -0.0650031618783845, 0.13530843645492766, 0.06503502485259346, 0.19695700878435943, -0.01823081036514424, 0.17697631374516704, -0.07421301129680286, 0.08192860046797927, -0.04624311921701945] |
1,802.10136 | Hidden Variable Quantum Mechanics from Branching from Quantum Complexity | Beginning with the Everett-DeWitt many-worlds interpretation of quantum
mechanics, there have been a series of proposals for how the state vector of a
quantum system might be split at any instant into orthogonal branches, each of
which exhibits approximately classical behavior. Here we propose a
decomposition of a state vector into branches by finding the minimum of a
measure of the net quantum complexity of the branch decomposition. We then
propose a method for finding an ensemble of possible initial state vectors from
which a randomly selected member, if evolved by ordinary Hamiltonian time
evolution, will follow a single sequence of those branches of many-worlds
quantum mechanics which persist through time. Macroscopic reality, we
hypothesize, consists of an accumulating sequence of such persistent branching
results. For any particular draw, the resulting deterministic system appears to
exhibit random behavior as a result of the successive emergence over time of
information present in the initial state but not previously observed.
| quant-ph gr-qc hep-th physics.hist-ph | beginning with the everettdewitt manyworlds interpretation of quantum mechanics there have been a series of proposals for how the state vector of a quantum system might be split at any instant into orthogonal branches each of which exhibits approximately classical behavior here we propose a decomposition of a state vector into branches by finding the minimum of a measure of the net quantum complexity of the branch decomposition we then propose a method for finding an ensemble of possible initial state vectors from which a randomly selected member if evolved by ordinary hamiltonian time evolution will follow a single sequence of those branches of manyworlds quantum mechanics which persist through time macroscopic reality we hypothesize consists of an accumulating sequence of such persistent branching results for any particular draw the resulting deterministic system appears to exhibit random behavior as a result of the successive emergence over time of information present in the initial state but not previously observed | [['beginning', 'with', 'the', 'everettdewitt', 'manyworlds', 'interpretation', 'of', 'quantum', 'mechanics', 'there', 'have', 'been', 'a', 'series', 'of', 'proposals', 'for', 'how', 'the', 'state', 'vector', 'of', 'a', 'quantum', 'system', 'might', 'be', 'split', 'at', 'any', 'instant', 'into', 'orthogonal', 'branches', 'each', 'of', 'which', 'exhibits', 'approximately', 'classical', 'behavior', 'here', 'we', 'propose', 'a', 'decomposition', 'of', 'a', 'state', 'vector', 'into', 'branches', 'by', 'finding', 'the', 'minimum', 'of', 'a', 'measure', 'of', 'the', 'net', 'quantum', 'complexity', 'of', 'the', 'branch', 'decomposition', 'we', 'then', 'propose', 'a', 'method', 'for', 'finding', 'an', 'ensemble', 'of', 'possible', 'initial', 'state', 'vectors', 'from', 'which', 'a', 'randomly', 'selected', 'member', 'if', 'evolved', 'by', 'ordinary', 'hamiltonian', 'time', 'evolution', 'will', 'follow', 'a', 'single', 'sequence', 'of', 'those', 'branches', 'of', 'manyworlds', 'quantum', 'mechanics', 'which', 'persist', 'through', 'time', 'macroscopic', 'reality', 'we', 'hypothesize', 'consists', 'of', 'an', 'accumulating', 'sequence', 'of', 'such', 'persistent', 'branching', 'results', 'for', 'any', 'particular', 'draw', 'the', 'resulting', 'deterministic', 'system', 'appears', 'to', 'exhibit', 'random', 'behavior', 'as', 'a', 'result', 'of', 'the', 'successive', 'emergence', 'over', 'time', 'of', 'information', 'present', 'in', 'the', 'initial', 'state', 'but', 'not', 'previously', 'observed']] | [-0.13667074567415888, 0.16902373693635017, -0.16459008033541594, 0.0016715175748037495, -0.040574858030363634, -0.13043174501782828, 0.06938773304354517, 0.3318332747191452, -0.29030438152603083, -0.2800088794190128, 0.07707635661035445, -0.23320979700916133, -0.14734996289940208, 0.1526677892365416, -0.023746059546069165, 0.03386245063909442, 0.10157933392173427, 0.1051137850317321, -0.05809460444246852, -0.22368504381130574, 0.32199585791321317, 0.0009202494191088874, 0.2650971813809577, -0.061919904436328846, 0.14955520424784227, 0.013953182861137732, 0.0266048634183077, 0.03015863025712241, -0.08374150246856318, 0.08062118422506959, 0.24003902310802108, 0.18158872568962064, 0.31432050120702404, -0.42579221497082215, -0.21175875909816308, 0.12335660689433289, 0.15947832957401006, 0.15499375355771036, -0.04546301175430892, -0.2686655242507684, 0.06925025666547809, -0.1434658964173453, -0.1394034784463691, -0.04901361447926922, 0.043104600100511106, -0.01823288037969618, -0.2151113239733894, 0.06500243191506452, 0.0887017288648636, 0.02556157520390857, -0.05089378465933927, -0.11469730274057739, -0.011521822107054151, 0.1404150405937248, -0.001467340978034505, 0.028234983961969898, 0.08445376986459752, -0.11585915537112078, -0.18634932396553788, 0.3630095484909738, -0.05125539877695168, -0.14820367672961135, 0.16702772829990098, -0.11855034421607377, -0.12794183830843325, 0.14141347740960727, 0.143408758897975, 0.09658901326233746, -0.13212479311071193, 0.03561692899626911, -0.04750157886772019, 0.16227249785513279, 0.03887225943320923, 0.06323411162930784, 0.2563940165386458, 0.14664444538681606, 0.04978936261224566, 0.15727658623756818, -0.06332934501871562, -0.16677665269442768, -0.3132669728688279, -0.18081338010924114, -0.18749823921306688, 0.11103808800817784, -0.0653642985234215, -0.22003558927636807, 0.40580067323271635, 0.11669381303307867, 0.2407373605076532, 0.052986144585754416, 0.2465524968163223, 0.15419012193855752, 0.03866262719180483, 0.06175748821775055, 0.20793482465491553, 0.1042825195161258, 0.07974572757861108, -0.1962684094446124, 0.08434890355665688, 0.06364882208857757] |
1,802.10137 | Extractive Text Summarization using Neural Networks | Text Summarization has been an extensively studied problem. Traditional
approaches to text summarization rely heavily on feature engineering. In
contrast to this, we propose a fully data-driven approach using feedforward
neural networks for single document summarization. We train and evaluate the
model on standard DUC 2002 dataset which shows results comparable to the state
of the art models. The proposed model is scalable and is able to produce the
summary of arbitrarily sized documents by breaking the original document into
fixed sized parts and then feeding it recursively to the network.
| cs.CL | text summarization has been an extensively studied problem traditional approaches to text summarization rely heavily on feature engineering in contrast to this we propose a fully datadriven approach using feedforward neural networks for single document summarization we train and evaluate the model on standard duc 2002 dataset which shows results comparable to the state of the art models the proposed model is scalable and is able to produce the summary of arbitrarily sized documents by breaking the original document into fixed sized parts and then feeding it recursively to the network | [['text', 'summarization', 'has', 'been', 'an', 'extensively', 'studied', 'problem', 'traditional', 'approaches', 'to', 'text', 'summarization', 'rely', 'heavily', 'on', 'feature', 'engineering', 'in', 'contrast', 'to', 'this', 'we', 'propose', 'a', 'fully', 'datadriven', 'approach', 'using', 'feedforward', 'neural', 'networks', 'for', 'single', 'document', 'summarization', 'we', 'train', 'and', 'evaluate', 'the', 'model', 'on', 'standard', 'duc', '2002', 'dataset', 'which', 'shows', 'results', 'comparable', 'to', 'the', 'state', 'of', 'the', 'art', 'models', 'the', 'proposed', 'model', 'is', 'scalable', 'and', 'is', 'able', 'to', 'produce', 'the', 'summary', 'of', 'arbitrarily', 'sized', 'documents', 'by', 'breaking', 'the', 'original', 'document', 'into', 'fixed', 'sized', 'parts', 'and', 'then', 'feeding', 'it', 'recursively', 'to', 'the', 'network']] | [0.009045201497009167, 0.0038870843960507003, -0.06345991942785927, 0.06027018865391325, -0.12669866511874556, -0.1471671444200143, 0.006329468983624663, 0.4386880634004598, -0.2603965119822053, -0.32069310141665924, 0.06767226830713328, -0.3035236561752774, -0.14419586786035715, 0.1841388997253399, -0.10734345337214808, 0.10517042225922693, 0.12615802851224134, 0.04828398594898837, -0.0054073826938222805, -0.312510616176731, 0.3101417668736898, 0.02866749220865441, 0.41429941169917583, 0.01427663037307806, 0.13518722954073123, -0.027906462560397582, -0.05285826404220783, -0.024433593776148673, -0.07943764430788028, 0.16084652970887844, 0.31417131696618705, 0.2046412176805661, 0.30132854416720817, -0.4213850472818364, -0.21882502702934728, 0.06182148610497569, 0.16567041786326156, 0.15104899408454384, -0.006785126139440543, -0.3444111881020305, 0.11076300423387643, -0.19405038347263093, 0.05336177861317992, -0.1530545828556949, 0.0018952317372128203, -0.046876544828762065, -0.26453854434785773, 0.002813509644960964, 0.10729137287413763, -0.0025695225244367517, -0.010755242083917607, -0.12048237944267444, 0.03848917411824504, 0.12650205879113996, 0.011856941078344339, 0.09464581052588483, 0.10858496826571915, -0.15460824337843895, -0.15086698585578784, 0.3731366477313114, -0.07398864255378862, -0.22379873931448865, 0.18860828207043295, 0.01572617134693396, -0.1569862236616785, 0.08785425009881402, 0.24268913888218965, 0.12568652717867396, -0.18764010220152008, 0.016121190719966583, -0.06929040417218438, 0.261073971208144, 0.02395413636874694, -0.04752599376325424, 0.16778524890337343, 0.30185264263207423, -0.032943470091405476, 0.15279141765671198, -0.11027100063082608, -0.0896731627961764, -0.1596818223165778, -0.06226777045598642, -0.19970882967738743, -0.03727585886820005, -0.05135044449339698, -0.18595197805009045, 0.4414465748039739, 0.26087091711687516, 0.20048256186707006, 0.08114038535603578, 0.3509405772201717, 0.03416140962924276, 0.11445944751855908, 0.09131199221771497, 0.1724858071788081, 0.006183087807865097, 0.15641248956895792, -0.112729566519732, 0.07532511339113526, 0.0948139695251734] |
1,802.10138 | Real-World Modeling of a Pathfinding Robot Using Robot Operating System
(ROS) | This paper presents a practical approach towards implementing pathfinding
algorithms on real-world and low-cost non- commercial hardware platforms. While
using robotics simulation platforms as a test-bed for our algorithms we easily
overlook real- world exogenous problems that are developed by external factors.
Such problems involve robot wheel slips, asynchronous motors, abnormal sensory
data or unstable power sources. The real-world dynamics tend to be very painful
even for executing simple algorithms like a Wavefront planner or A-star search.
This paper addresses designing techniques that tend to be robust as well as
reusable for any hardware platforms; covering problems like controlling
asynchronous drives, odometry offset issues and handling abnormal sensory
feedback. The algorithm implementation medium and hardware design tools have
been kept general in order to present our work as a serving platform for future
researchers and robotics enthusiast working in the field of path planning
robotics.
| cs.RO | this paper presents a practical approach towards implementing pathfinding algorithms on realworld and lowcost non commercial hardware platforms while using robotics simulation platforms as a testbed for our algorithms we easily overlook real world exogenous problems that are developed by external factors such problems involve robot wheel slips asynchronous motors abnormal sensory data or unstable power sources the realworld dynamics tend to be very painful even for executing simple algorithms like a wavefront planner or astar search this paper addresses designing techniques that tend to be robust as well as reusable for any hardware platforms covering problems like controlling asynchronous drives odometry offset issues and handling abnormal sensory feedback the algorithm implementation medium and hardware design tools have been kept general in order to present our work as a serving platform for future researchers and robotics enthusiast working in the field of path planning robotics | [['this', 'paper', 'presents', 'a', 'practical', 'approach', 'towards', 'implementing', 'pathfinding', 'algorithms', 'on', 'realworld', 'and', 'lowcost', 'non', 'commercial', 'hardware', 'platforms', 'while', 'using', 'robotics', 'simulation', 'platforms', 'as', 'a', 'testbed', 'for', 'our', 'algorithms', 'we', 'easily', 'overlook', 'real', 'world', 'exogenous', 'problems', 'that', 'are', 'developed', 'by', 'external', 'factors', 'such', 'problems', 'involve', 'robot', 'wheel', 'slips', 'asynchronous', 'motors', 'abnormal', 'sensory', 'data', 'or', 'unstable', 'power', 'sources', 'the', 'realworld', 'dynamics', 'tend', 'to', 'be', 'very', 'painful', 'even', 'for', 'executing', 'simple', 'algorithms', 'like', 'a', 'wavefront', 'planner', 'or', 'astar', 'search', 'this', 'paper', 'addresses', 'designing', 'techniques', 'that', 'tend', 'to', 'be', 'robust', 'as', 'well', 'as', 'reusable', 'for', 'any', 'hardware', 'platforms', 'covering', 'problems', 'like', 'controlling', 'asynchronous', 'drives', 'odometry', 'offset', 'issues', 'and', 'handling', 'abnormal', 'sensory', 'feedback', 'the', 'algorithm', 'implementation', 'medium', 'and', 'hardware', 'design', 'tools', 'have', 'been', 'kept', 'general', 'in', 'order', 'to', 'present', 'our', 'work', 'as', 'a', 'serving', 'platform', 'for', 'future', 'researchers', 'and', 'robotics', 'enthusiast', 'working', 'in', 'the', 'field', 'of', 'path', 'planning', 'robotics']] | [-0.15277045406401157, 0.05814229510242826, -0.05161650136659115, 0.024768531934261834, -0.15105951538887516, -0.24176675962476896, 0.021097164395554313, 0.46855361248398647, -0.2478200388847497, -0.3651108022811341, 0.15468243626588635, -0.22089082845486702, -0.2217588962698034, 0.3054763485211879, -0.15020159925129675, 0.11328276678727105, 0.1264194218666646, -0.03995506316262843, 0.030815497324962554, -0.20807660043817655, 0.21049858737608482, 0.04073776851833702, 0.2697369957342744, 0.0047639139205345815, 0.09422969472000439, -0.017051895124966215, 0.0033079258527542498, 0.021493606604153996, -0.031387935878592545, 0.12040928962222974, 0.40268031958458494, 0.20363064908807904, 0.36045413658279796, -0.4799542386984003, -0.20141447108030192, 0.10278909237501373, 0.17368382137943186, 0.08355900728914502, -0.09588705094005302, -0.32957978456698617, 0.06370301693477186, -0.18158652185109156, -0.11849179383174613, -0.14395120725615737, -0.015277893066502594, 0.022095393192924757, -0.26528558217567105, -0.045435982557206316, 0.013351847019682814, 0.10690753016107041, -0.02842600635927299, -0.1032945944405771, 0.09295076666367721, 0.18744723382887654, 0.012812421249289965, 0.029318726448149517, 0.2587591994361117, -0.14869343405107743, -0.21770782195481247, 0.42104695298837436, 0.06097775884855795, -0.18044680316434725, 0.20328224717021182, 0.031399485303474396, -0.18962069857737113, 0.08143011517019878, 0.2900184093428583, 0.1131673328064639, -0.17152814079991316, 0.04266938416383647, 0.059429347759176944, 0.1408045739453318, 0.034056625677401135, 0.01181712867892829, 0.18861883294047058, 0.24157940877023443, 0.10793994198681722, 0.112961257822362, -0.012914152393631381, -0.11111036091400632, -0.20769762273562734, -0.12227332833512077, -0.13150007215746004, -0.01309103680581882, -0.0693003443419002, -0.17215502532158883, 0.30895959494378544, 0.2170659943547999, 0.09325998687538607, 0.07899797413405833, 0.4619350377470255, 0.015001681567458756, 0.0920389307743131, 0.1365407429754951, 0.15310060458241737, -0.01540160241922171, 0.22418563332697697, -0.168003420707577, 0.10449737236385459, -0.0358856166166992] |
1,802.10139 | Stillman's conjecture via generic initial ideals | Using recent work by Erman-Sam-Snowden, we show that finitely generated
ideals in the ring of bounded-degree formal power series in infinitely many
variables have finitely generated Gr\"obner bases relative to the graded
reverse lexicographic order. We then combine this result with the first
author's work on topological Noetherianity of polynomial functors to give an
algorithmic proof of the following statement: ideals in polynomial rings
generated by a fixed number of homogeneous polynomials of fixed degrees only
have a finite number of possible generic initial ideals, independently of the
number of variables that they involve and independently of the characteristic
of the ground field. Our algorithm outputs not only a finite list of possible
generic initial ideals, but also finite descriptions of the corresponding
strata in the space of coefficients.
| math.AC math.AG | using recent work by ermansamsnowden we show that finitely generated ideals in the ring of boundeddegree formal power series in infinitely many variables have finitely generated grobner bases relative to the graded reverse lexicographic order we then combine this result with the first authors work on topological noetherianity of polynomial functors to give an algorithmic proof of the following statement ideals in polynomial rings generated by a fixed number of homogeneous polynomials of fixed degrees only have a finite number of possible generic initial ideals independently of the number of variables that they involve and independently of the characteristic of the ground field our algorithm outputs not only a finite list of possible generic initial ideals but also finite descriptions of the corresponding strata in the space of coefficients | [['using', 'recent', 'work', 'by', 'ermansamsnowden', 'we', 'show', 'that', 'finitely', 'generated', 'ideals', 'in', 'the', 'ring', 'of', 'boundeddegree', 'formal', 'power', 'series', 'in', 'infinitely', 'many', 'variables', 'have', 'finitely', 'generated', 'grobner', 'bases', 'relative', 'to', 'the', 'graded', 'reverse', 'lexicographic', 'order', 'we', 'then', 'combine', 'this', 'result', 'with', 'the', 'first', 'authors', 'work', 'on', 'topological', 'noetherianity', 'of', 'polynomial', 'functors', 'to', 'give', 'an', 'algorithmic', 'proof', 'of', 'the', 'following', 'statement', 'ideals', 'in', 'polynomial', 'rings', 'generated', 'by', 'a', 'fixed', 'number', 'of', 'homogeneous', 'polynomials', 'of', 'fixed', 'degrees', 'only', 'have', 'a', 'finite', 'number', 'of', 'possible', 'generic', 'initial', 'ideals', 'independently', 'of', 'the', 'number', 'of', 'variables', 'that', 'they', 'involve', 'and', 'independently', 'of', 'the', 'characteristic', 'of', 'the', 'ground', 'field', 'our', 'algorithm', 'outputs', 'not', 'only', 'a', 'finite', 'list', 'of', 'possible', 'generic', 'initial', 'ideals', 'but', 'also', 'finite', 'descriptions', 'of', 'the', 'corresponding', 'strata', 'in', 'the', 'space', 'of', 'coefficients']] | [-0.16342685714880645, 0.10105281971129898, -0.08183920451847371, -0.0021649955606335425, -0.08016613858490018, -0.10682923699278035, -0.006567408796399832, 0.32051686097838683, -0.37616368015733315, -0.22922158428264083, 0.08440458073528134, -0.22416066450387007, -0.09271842100315553, 0.20583232527860673, -0.09185560547484783, 0.038536704993020976, 0.05324505184034933, 0.07806132123732823, -0.036907131864609255, -0.38547459422261454, 0.3986905514357204, -0.01168034984584665, 0.19598801190659287, -0.00043096493755001575, 0.11772430425480707, 0.0024880467681214213, -0.06749502398088225, 0.047894004417457836, -0.16242504432068472, 0.12493655752223276, 0.3010140042661078, 0.12941395225425367, 0.2603767855107435, -0.4325976097243256, -0.09663224548603466, 0.197683831294853, 0.1413866987459187, 0.08070562478712873, -0.016734502706640342, -0.20501325415534666, 0.1374229182911222, -0.21883004206392798, -0.1419238318412681, -0.09067664982558199, 0.0738673295973058, 0.08483373117633164, -0.2647732016375812, -0.027484819160463303, 0.14574558100713375, 0.17314801106840605, -0.024783795999610447, -0.10939307378794183, -0.04039445226499083, 0.06239675801589328, 0.010287706660164986, -0.011453331098891795, 0.06659496779320762, -0.10808679404181021, -0.17628558938622518, 0.3163440723437816, -0.03190503201494721, -0.22270528592343908, 0.16220789690851234, -0.179576862086833, -0.16641634297047858, 0.14621153125335695, 0.07507101239571057, 0.14895334932225524, -0.040768231607216876, 0.1633409223354647, -0.15803874435368925, 0.1020421668436029, 0.13277698145975592, 0.03390770662554132, 0.1490609694556042, 0.03527942392611294, 0.05536404770077752, 0.1448335181339644, 0.0576433115729742, -0.03161782769802812, -0.3605469655813067, -0.15638661141929333, -0.21568067467524088, 0.05985024485028134, -0.12796057762159307, -0.1995213950649486, 0.4573162186097761, 0.1526730284858786, 0.18104681491240626, 0.08944356608844828, 0.2536964945611544, 0.06299347249023413, 0.029794429532557842, 0.05108715146616305, 0.12439993326188414, 0.18152611594996415, -0.0095378101523238, -0.12688479035932687, 0.05981232846625062, 0.17285323713804246] |
1,802.1014 | Towards a Socially Optimal Multi-Modal Routing Platform | The increasing rate of urbanization has added pressure on the already
constrained transportation networks in our communities. Ride-sharing platforms
such as Uber and Lyft are becoming a more commonplace, particularly in urban
environments. While such services may be deemed more convenient than riding
public transit due to their on-demand nature, reports show that they do not
necessarily decrease the congestion in major cities. One of the key problems is
that typically mobility decision support systems focus on individual utility
and react only after congestion appears. In this paper, we propose socially
considerate multi-modal routing algorithms that are proactive and consider, via
predictions, the shared effect of riders on the overall efficacy of mobility
services. We have adapted the MATSim simulator framework to incorporate the
proposed algorithms present a simulation analysis of a case study in Nashville,
Tennessee that assesses the effects of our routing models on the traffic
congestion for different levels of penetration and adoption of socially
considerate routes. Our results indicate that even at a low penetration (social
ratio), we are able to achieve an improvement in system-level performance.
| cs.GT cs.NI | the increasing rate of urbanization has added pressure on the already constrained transportation networks in our communities ridesharing platforms such as uber and lyft are becoming a more commonplace particularly in urban environments while such services may be deemed more convenient than riding public transit due to their ondemand nature reports show that they do not necessarily decrease the congestion in major cities one of the key problems is that typically mobility decision support systems focus on individual utility and react only after congestion appears in this paper we propose socially considerate multimodal routing algorithms that are proactive and consider via predictions the shared effect of riders on the overall efficacy of mobility services we have adapted the matsim simulator framework to incorporate the proposed algorithms present a simulation analysis of a case study in nashville tennessee that assesses the effects of our routing models on the traffic congestion for different levels of penetration and adoption of socially considerate routes our results indicate that even at a low penetration social ratio we are able to achieve an improvement in systemlevel performance | [['the', 'increasing', 'rate', 'of', 'urbanization', 'has', 'added', 'pressure', 'on', 'the', 'already', 'constrained', 'transportation', 'networks', 'in', 'our', 'communities', 'ridesharing', 'platforms', 'such', 'as', 'uber', 'and', 'lyft', 'are', 'becoming', 'a', 'more', 'commonplace', 'particularly', 'in', 'urban', 'environments', 'while', 'such', 'services', 'may', 'be', 'deemed', 'more', 'convenient', 'than', 'riding', 'public', 'transit', 'due', 'to', 'their', 'ondemand', 'nature', 'reports', 'show', 'that', 'they', 'do', 'not', 'necessarily', 'decrease', 'the', 'congestion', 'in', 'major', 'cities', 'one', 'of', 'the', 'key', 'problems', 'is', 'that', 'typically', 'mobility', 'decision', 'support', 'systems', 'focus', 'on', 'individual', 'utility', 'and', 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1,802.10141 | The concordance of field-normalized scores based on Web of Science and
Microsoft Academic data: A case study in computer sciences | In order to assess Microsoft Academic as a useful data source for evaluative
bibliometrics it is crucial to know, if citation counts from Microsoft Academic
could be used in common normalization procedures and whether the normalized
scores agree with the scores calculated on the basis of established databases.
To this end, we calculate the field-normalized citation scores of the
publications of a computer science institute based on Microsoft Academic and
the Web of Science and estimate the statistical concordance of the scores. Our
results suggest that field-normalized citation scores can be calculated with
Microsoft Academic and that these scores are in good agreement with the
corresponding scores from the Web of Science.
| cs.DL | in order to assess microsoft academic as a useful data source for evaluative bibliometrics it is crucial to know if citation counts from microsoft academic could be used in common normalization procedures and whether the normalized scores agree with the scores calculated on the basis of established databases to this end we calculate the fieldnormalized citation scores of the publications of a computer science institute based on microsoft academic and the web of science and estimate the statistical concordance of the scores our results suggest that fieldnormalized citation scores can be calculated with microsoft academic and that these scores are in good agreement with the corresponding scores from the web of science | [['in', 'order', 'to', 'assess', 'microsoft', 'academic', 'as', 'a', 'useful', 'data', 'source', 'for', 'evaluative', 'bibliometrics', 'it', 'is', 'crucial', 'to', 'know', 'if', 'citation', 'counts', 'from', 'microsoft', 'academic', 'could', 'be', 'used', 'in', 'common', 'normalization', 'procedures', 'and', 'whether', 'the', 'normalized', 'scores', 'agree', 'with', 'the', 'scores', 'calculated', 'on', 'the', 'basis', 'of', 'established', 'databases', 'to', 'this', 'end', 'we', 'calculate', 'the', 'fieldnormalized', 'citation', 'scores', 'of', 'the', 'publications', 'of', 'a', 'computer', 'science', 'institute', 'based', 'on', 'microsoft', 'academic', 'and', 'the', 'web', 'of', 'science', 'and', 'estimate', 'the', 'statistical', 'concordance', 'of', 'the', 'scores', 'our', 'results', 'suggest', 'that', 'fieldnormalized', 'citation', 'scores', 'can', 'be', 'calculated', 'with', 'microsoft', 'academic', 'and', 'that', 'these', 'scores', 'are', 'in', 'good', 'agreement', 'with', 'the', 'corresponding', 'scores', 'from', 'the', 'web', 'of', 'science']] | [0.031094780586759692, 0.004532042449032555, -0.10096475032956473, 0.1251505847820746, -0.1039287839375902, -0.09075929437702664, 0.07487575182624694, 0.4222367654604438, -0.1876352869938793, -0.384689987055026, 0.05297072433521472, -0.357100911654665, -0.10942455418626196, 0.262323070234353, -0.107081791751885, 0.03901728268205521, 0.11499763293769709, 0.13019088550104893, -0.02530627297736438, -0.36002432101356263, 0.2536896256829745, 0.12456857375634302, 0.3820253616015959, 0.09065674801240675, -0.0030308236382552423, -0.05896347258905215, -0.15621089359462662, 0.029449088353430852, -0.14556223976939822, 0.20656582434561901, 0.39115719593662235, 0.25396045027134406, 0.32675679916116807, -0.3265538054152525, -0.10325138468345228, 0.048452219751197845, 0.07169393047141577, 0.014446734982941831, 0.003962263687364092, -0.3817966391257609, 0.07035053182283134, -0.20866869355917775, 0.011742927691167486, -0.0842281523260421, 0.046490498568995724, 0.08870008313013907, -0.2242772610339411, 0.07073684734392113, -0.07249923763083643, 0.14853977399928095, -0.011118074937257916, -0.18194176739780232, -0.03464819193634737, 0.2589081225409505, 0.07678499078610912, 0.07470567165208715, 0.17033112856110424, -0.16976910844719637, -0.19119700718770868, 0.4304273122106679, -0.08200607974868035, -0.1248819292024044, 0.1302818321086566, -0.08816193018823729, -0.1750343638081436, -0.002587807855369257, 0.22051124493633065, -0.007352853002625385, -0.1461616713287575, -0.0032032474430577296, -0.033096861129576736, 0.21771903955959715, 0.07547047209975842, -0.08001053073901078, 0.21057040325831622, 0.1104907645162062, -0.048538941576095694, 0.08633694983603034, -0.04634839512540826, -0.05996367055922747, -0.24145527321836976, -0.16039928762308722, -0.2251265208760742, 0.01583379680024726, -0.12480973775330183, -0.19847922035426432, 0.420251928486063, 0.2304123080393765, 0.09487905117982466, 0.021897780220440057, 0.2789883611091812, 0.04460503106487782, 0.08708332854855273, 0.09209446936230441, 0.2171571542442377, 0.04578852569725963, 0.16786227588974206, -0.07327941711992025, 0.13218492426676676, 0.01761356405872253] |
1,802.10142 | On the structure of the fundamental subspaces of acyclic matrices with
$0$ in the diagonal | A matrix is called acyclic if replacing the diagonal entries with $0$, and
the nonzero diagonal entries with $1$, yields the adjacency matrix of a forest.
In this paper we show that null space and the rank of a acyclic matrix with $0$
in the diagonal is obtained from the null space and the rank of the adjacency
matrix of the forest by multipliying by non-singular diagonal matrices. We
combine these methods with an algorithm for finding a sparsest basis of the
null space of a forest to provide an optimal time algorithm for finding a
sparsest basis of the null space of acyclic matrices with $0$ in the diagonal.
| math.CO | a matrix is called acyclic if replacing the diagonal entries with 0 and the nonzero diagonal entries with 1 yields the adjacency matrix of a forest in this paper we show that null space and the rank of a acyclic matrix with 0 in the diagonal is obtained from the null space and the rank of the adjacency matrix of the forest by multipliying by nonsingular diagonal matrices we combine these methods with an algorithm for finding a sparsest basis of the null space of a forest to provide an optimal time algorithm for finding a sparsest basis of the null space of acyclic matrices with 0 in the diagonal | [['a', 'matrix', 'is', 'called', 'acyclic', 'if', 'replacing', 'the', 'diagonal', 'entries', 'with', '0', 'and', 'the', 'nonzero', 'diagonal', 'entries', 'with', '1', 'yields', 'the', 'adjacency', 'matrix', 'of', 'a', 'forest', 'in', 'this', 'paper', 'we', 'show', 'that', 'null', 'space', 'and', 'the', 'rank', 'of', 'a', 'acyclic', 'matrix', 'with', '0', 'in', 'the', 'diagonal', 'is', 'obtained', 'from', 'the', 'null', 'space', 'and', 'the', 'rank', 'of', 'the', 'adjacency', 'matrix', 'of', 'the', 'forest', 'by', 'multipliying', 'by', 'nonsingular', 'diagonal', 'matrices', 'we', 'combine', 'these', 'methods', 'with', 'an', 'algorithm', 'for', 'finding', 'a', 'sparsest', 'basis', 'of', 'the', 'null', 'space', 'of', 'a', 'forest', 'to', 'provide', 'an', 'optimal', 'time', 'algorithm', 'for', 'finding', 'a', 'sparsest', 'basis', 'of', 'the', 'null', 'space', 'of', 'acyclic', 'matrices', 'with', '0', 'in', 'the', 'diagonal']] | [-0.1250083979492614, 0.0983568578384445, 0.002785981231189649, -0.01676853543997597, -0.05217602940430061, -0.11455509464743488, 0.04419044530074702, 0.37962616710077735, -0.2982971437207056, -0.18409252965634842, 0.13221554772676303, -0.28390941386102536, -0.1796794491456907, 0.07206894811071934, -0.014148402395188261, 0.0650386894890748, 0.08299709586512058, 0.1046065920176211, -0.14629026366303752, -0.26779471057544063, 0.38967717823427206, 0.0503645047647964, 0.2250741064257988, -0.04011212732779597, 0.16188236665185712, 0.058689664126536166, -0.04406105419364544, 0.04940424985017354, -0.047548743864479194, 0.13336826120118755, 0.2599093149493047, 0.21726181243606116, 0.23649954050779343, -0.379436346539937, -0.13057577901374584, 0.22540922204904054, 0.11627485495436629, 0.07796413933328532, -0.007456115758849666, -0.2639941762440727, 0.1465165420016701, -0.13171188909252848, -0.1406478841336222, -0.020744240706051707, 0.03595709322456168, -0.004922862984923595, -0.3659791611305891, 0.03286566077774271, 0.07603235445369821, 0.014459892509317179, -0.026580793466931638, -0.19885264941140873, 0.010175497514631498, 0.06867903325740897, 1.2612064292124652e-05, 0.030068549814574217, 0.02340373749323531, -0.07672798050217194, -0.09911525724541156, 0.34934244654354973, -0.07009517374115252, -0.23464241585429382, 0.053861378837342655, -0.14217317588798223, -0.13694349024017607, 0.1316445032903634, 0.117160994474084, 0.08263977220625865, -0.06649797651574972, 0.17078074725150397, -0.14285561591472237, 0.11470607811704688, 0.029135717181574313, -0.045421584889531956, 0.1400962868073118, 0.10690344135285518, 0.16141596478367343, 0.12037631928271383, -0.025937330310976288, 0.016407783032147162, -0.29989311310949673, -0.18220630061701623, -0.2643025874613075, 0.0677076235719008, -0.23264614862153293, -0.25544477920603315, 0.43303043479014425, 0.11853766542380897, 0.28550634591267743, 0.13778055791632024, 0.25219300076570533, 0.09471434335984769, 0.012650907227615698, 0.12799213169603993, 0.14753580970023203, 0.22445489079563305, 0.02105084975002282, -0.16290522187439843, 0.0747358810515442, 0.15473901722238426] |
1,802.10143 | Study on Graphene based Next Generation Flexible Photodetector for
Optical Communication | We report on the efficient photodetection (PD) properties of graphene based
p-i-n photodetector, where all the three layers are either single or multilayer
graphene sheets. We report the bandwidth and responsivity performance of the
device. This simple structure paves the way for the next generation flexible
wireless communication systems. A theoretical model is used to study the
carrier distribution and current in a graphene based p-i-n photodetector
system.
| physics.app-ph | we report on the efficient photodetection pd properties of graphene based pin photodetector where all the three layers are either single or multilayer graphene sheets we report the bandwidth and responsivity performance of the device this simple structure paves the way for the next generation flexible wireless communication systems a theoretical model is used to study the carrier distribution and current in a graphene based pin photodetector system | [['we', 'report', 'on', 'the', 'efficient', 'photodetection', 'pd', 'properties', 'of', 'graphene', 'based', 'pin', 'photodetector', 'where', 'all', 'the', 'three', 'layers', 'are', 'either', 'single', 'or', 'multilayer', 'graphene', 'sheets', 'we', 'report', 'the', 'bandwidth', 'and', 'responsivity', 'performance', 'of', 'the', 'device', 'this', 'simple', 'structure', 'paves', 'the', 'way', 'for', 'the', 'next', 'generation', 'flexible', 'wireless', 'communication', 'systems', 'a', 'theoretical', 'model', 'is', 'used', 'to', 'study', 'the', 'carrier', 'distribution', 'and', 'current', 'in', 'a', 'graphene', 'based', 'pin', 'photodetector', 'system']] | [-0.1802632634413278, 0.045479244908646625, -0.0038450726390104085, -0.06089363988447825, -0.040891803938018924, -0.18743398359648006, 0.09410517312148038, 0.47546623729388504, -0.2656649079666856, -0.26749839521396684, 0.027349766061353663, -0.2863751136533478, -0.1994003353140536, 0.22957911593702568, -0.0338796937619062, 0.11491424097638468, 0.042652210611028266, -0.09143316709806266, -0.02241368606166147, -0.18958899482523145, 0.2528457040624583, 0.05502139525624978, 0.4044189721154159, 0.05864353453987004, 0.05847685801906183, 0.01789341420140665, 0.06240006007582826, -0.05436033977414755, -0.12616562772103967, 0.16251930189045036, 0.20473951998385875, -0.03269971570903983, 0.22845525357885943, -0.5099276936174754, -0.22146251344341128, -0.009670465362860876, 0.09492513773661546, 0.08295542001724243, -0.10257183827685795, -0.2234494250596446, 0.11618732944514383, -0.1718047677731032, -0.06966992451891522, -0.02547626064487678, -0.03799836035571335, 0.03310811122098718, -0.2647561273402329, 0.0023587927468778458, 0.01776431454345584, 0.00528021965874359, -0.039826168507501924, -0.12345275696990189, -0.005407644120757194, 0.1061162220841438, -0.09089424161699272, -0.01819689726278953, 0.2149035308008452, -0.166262866155354, -0.13750793910859263, 0.3760938943528077, -0.06568942552856992, -0.174106418620795, 0.155692249070853, -0.14918363731190123, -0.05418070431059117, 0.07827574233113624, 0.17649474491447428, 0.12815641228328734, -0.2091953846607152, 0.059329185756402746, 0.009540584828595029, 0.19147227179286452, 0.03168677899520844, 0.14401023080983363, 0.2384843557340312, 0.3415619266931625, 0.08591669739004881, 0.12208932997001444, -0.16755340092555238, 0.019967160564299452, -0.21810071356594563, -0.21816558050169774, -0.20063506761353517, 0.08495892561040819, -0.030298993675815462, -0.17599030730643256, 0.46984802296056466, 0.1929285552982679, 0.16883144564652705, 0.020788554646595216, 0.35666978786535125, 0.11701387779355761, 0.08442032271448303, 0.00885504180812003, 0.23247950363849454, 0.09732507812954924, 0.12719957750318023, -0.15901281726409627, 0.04239419024602017, -0.044290810977519655] |
1,802.10144 | Spectral properties of the trap model on sparse networks | One of the simplest models for the slow relaxation and aging of glasses is
the trap model by Bouchaud and others, which represents a system as a point in
configuration-space hopping between local energy minima. The time evolution
depends on the transition rates and the network of allowed jumps between the
minima. We consider the case of sparse configuration-space connectivity given
by a random graph, and study the spectral properties of the resulting master
operator. We develop a general approach using the cavity method that gives
access to the density of states in large systems, as well as localisation
properties of the eigenvectors, which are important for the dynamics. We
illustrate how, for a system with sparse connectivity and finite temperature,
the density of states and the average inverse participation ratio have
attributes that arise from a non-trivial combination of the corresponding mean
field (fully connected) and random walk (infinite temperature) limits. In
particular, we find a range of eigenvalues for which the density of states is
of mean-field form but localisation properties are not, and speculate that the
corresponding eigenvectors may be concentrated on extensively many clusters of
network sites.
| cond-mat.dis-nn cond-mat.stat-mech | one of the simplest models for the slow relaxation and aging of glasses is the trap model by bouchaud and others which represents a system as a point in configurationspace hopping between local energy minima the time evolution depends on the transition rates and the network of allowed jumps between the minima we consider the case of sparse configurationspace connectivity given by a random graph and study the spectral properties of the resulting master operator we develop a general approach using the cavity method that gives access to the density of states in large systems as well as localisation properties of the eigenvectors which are important for the dynamics we illustrate how for a system with sparse connectivity and finite temperature the density of states and the average inverse participation ratio have attributes that arise from a nontrivial combination of the corresponding mean field fully connected and random walk infinite temperature limits in particular we find a range of eigenvalues for which the density of states is of meanfield form but localisation properties are not and speculate that the corresponding eigenvectors may be concentrated on extensively many clusters of network sites | [['one', 'of', 'the', 'simplest', 'models', 'for', 'the', 'slow', 'relaxation', 'and', 'aging', 'of', 'glasses', 'is', 'the', 'trap', 'model', 'by', 'bouchaud', 'and', 'others', 'which', 'represents', 'a', 'system', 'as', 'a', 'point', 'in', 'configurationspace', 'hopping', 'between', 'local', 'energy', 'minima', 'the', 'time', 'evolution', 'depends', 'on', 'the', 'transition', 'rates', 'and', 'the', 'network', 'of', 'allowed', 'jumps', 'between', 'the', 'minima', 'we', 'consider', 'the', 'case', 'of', 'sparse', 'configurationspace', 'connectivity', 'given', 'by', 'a', 'random', 'graph', 'and', 'study', 'the', 'spectral', 'properties', 'of', 'the', 'resulting', 'master', 'operator', 'we', 'develop', 'a', 'general', 'approach', 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1,802.10145 | Graph Signal Processing: Filter Design and Spectral Statistics | Graph signal processing analyzes signals supported on the nodes of a graph by
defining the shift operator in terms of a matrix, such as the graph adjacency
matrix or Laplacian matrix, related to the structure of the graph. With respect
to the graph shift operator, polynomial functions of the shift matrix perform
filtering. An application considered in this paper, convergence acceleration
filters for distributed average consensus may be viewed as lowpass graph
filters periodically applied to the states. Design of graph filters depends on
the shift matrix eigendecomposition. Consequently, random graphs present a
challenge as this information is often difficult to obtain. Nevertheless, the
asymptotic behavior of the shift matrix empirical spectral distribution
provides a substitute for suitable random matrix models. This paper employs
deterministic approximations for empirical spectral statistics from other works
to propose optimization criteria for consensus acceleration filters, evaluating
the results through simulation.
| eess.SP | graph signal processing analyzes signals supported on the nodes of a graph by defining the shift operator in terms of a matrix such as the graph adjacency matrix or laplacian matrix related to the structure of the graph with respect to the graph shift operator polynomial functions of the shift matrix perform filtering an application considered in this paper convergence acceleration filters for distributed average consensus may be viewed as lowpass graph filters periodically applied to the states design of graph filters depends on the shift matrix eigendecomposition consequently random graphs present a challenge as this information is often difficult to obtain nevertheless the asymptotic behavior of the shift matrix empirical spectral distribution provides a substitute for suitable random matrix models this paper employs deterministic approximations for empirical spectral statistics from other works to propose optimization criteria for consensus acceleration filters evaluating the results through simulation | [['graph', 'signal', 'processing', 'analyzes', 'signals', 'supported', 'on', 'the', 'nodes', 'of', 'a', 'graph', 'by', 'defining', 'the', 'shift', 'operator', 'in', 'terms', 'of', 'a', 'matrix', 'such', 'as', 'the', 'graph', 'adjacency', 'matrix', 'or', 'laplacian', 'matrix', 'related', 'to', 'the', 'structure', 'of', 'the', 'graph', 'with', 'respect', 'to', 'the', 'graph', 'shift', 'operator', 'polynomial', 'functions', 'of', 'the', 'shift', 'matrix', 'perform', 'filtering', 'an', 'application', 'considered', 'in', 'this', 'paper', 'convergence', 'acceleration', 'filters', 'for', 'distributed', 'average', 'consensus', 'may', 'be', 'viewed', 'as', 'lowpass', 'graph', 'filters', 'periodically', 'applied', 'to', 'the', 'states', 'design', 'of', 'graph', 'filters', 'depends', 'on', 'the', 'shift', 'matrix', 'eigendecomposition', 'consequently', 'random', 'graphs', 'present', 'a', 'challenge', 'as', 'this', 'information', 'is', 'often', 'difficult', 'to', 'obtain', 'nevertheless', 'the', 'asymptotic', 'behavior', 'of', 'the', 'shift', 'matrix', 'empirical', 'spectral', 'distribution', 'provides', 'a', 'substitute', 'for', 'suitable', 'random', 'matrix', 'models', 'this', 'paper', 'employs', 'deterministic', 'approximations', 'for', 'empirical', 'spectral', 'statistics', 'from', 'other', 'works', 'to', 'propose', 'optimization', 'criteria', 'for', 'consensus', 'acceleration', 'filters', 'evaluating', 'the', 'results', 'through', 'simulation']] | [-0.09619202772083642, 0.03785951293405697, -0.09142428338017365, 0.04510029569054533, -0.1168366136979822, -0.12541726666617475, 0.03756036654861057, 0.4323969967663288, -0.3145911214515975, -0.2845175203453424, 0.13990265877171076, -0.2626819080028887, -0.21009790165866535, 0.11433173331897706, -0.08888438161245663, 0.10388160607305495, 0.11687010041540107, 0.06981406579661655, -0.08600040162715755, -0.1712632537586216, 0.30868005132293075, 0.07920876224461483, 0.2748893071508214, -0.012801583687302796, 0.08171773021504497, 0.05384949962161992, -0.053876514387100116, -0.002652278712995299, -0.06961020012067197, 0.11096632425403796, 0.28215969634698945, 0.1707929411475636, 0.2798026747035169, -0.405447927890473, -0.20279464639694597, 0.16722808771946926, 0.16825137383700028, 0.05995136588071919, -0.04101416133886382, -0.27501804352903814, 0.07191834551894603, -0.13890840879271496, -0.05391347607875192, -0.05407804761509322, -0.005638202247273637, 0.03259864583936813, -0.34818012718221314, 0.049291214199213645, 0.04812247699369, 0.047444712469507364, 0.04014529233594259, -0.1546396407592174, 0.06249092444012018, 0.11573115235421015, -0.032635319520311096, -0.01250781177476125, 0.14583613285922434, -0.06902677063951396, -0.14786534310774624, 0.3697896612591225, -0.07159299944840014, -0.2351177346191771, 0.0912165375536448, -0.049845166464514826, -0.12412595901357597, 0.08036679716155648, 0.19617254198337458, 0.08126708003373383, -0.1426267561966024, 0.08205226350141918, -0.01245132308733994, 0.16501135958760518, 0.0437348792090221, 0.04557240207054435, 0.10848669847154556, 0.14114732882135536, 0.16712336838628128, 0.1620834790029059, -0.006429509117829371, -0.07798225683325978, -0.2611666626678875, -0.09703442250531524, -0.29014787459363267, 0.029474474610888386, -0.17984955804741443, -0.25310984576656803, 0.4681062238332369, 0.1585403252975084, 0.22332546183176033, 0.08321987026473125, 0.2858047558836741, 0.17160761942177985, 0.04930480399500632, 0.0857180494253766, 0.14709017775818858, 0.2066121198865266, 0.11165122029511895, -0.1815815583534845, 0.09636751031949606, 0.11369168100725502] |
1,802.10146 | High-Cadence Imaging and Imaging Spectroscopy at the GREGOR Solar
Telescope - A Collaborative Research Environment for High-Resolution Solar
Physics | In high-resolution solar physics, the volume and complexity of photometric,
spectroscopic, and polarimetric ground-based data significantly increased in
the last decade reaching data acquisition rates of terabytes per hour. This is
driven by the desire to capture fast processes on the Sun and by the necessity
for short exposure times "freezing" the atmospheric seeing, thus enabling
post-facto image restoration. Consequently, large-format and high-cadence
detectors are nowadays used in solar observations to facilitate image
restoration. Based on our experience during the "early science" phase with the
1.5-meter GREGOR solar telescope (2014-2015) and the subsequent transition to
routine observations in 2016, we describe data collection and data management
tailored towards image restoration and imaging spectroscopy. We outline our
approaches regarding data processing, analysis, and archiving for two of
GREGOR's post-focus instruments (see http://gregor.aip.de), i.e., the GREGOR
Fabry-Perot Interferometer (GFPI) and the newly installed High-Resolution Fast
Imager (HiFI). The heterogeneous and complex nature of multi-dimensional data
arising from high-resolution solar observations provides an intriguing but also
a challenging example for "big data" in astronomy. The big data challenge has
two aspects: (1) establishing a workflow for publishing the data for the whole
community and beyond and (2) creating a Collaborative Research Environment
(CRE), where computationally intense data and post-processing tools are
co-located and collaborative work is enabled for scientists of multiple
institutes. This requires either collaboration with a data center or frameworks
and databases capable of dealing with huge data sets based on Virtual
Observatory (VO) and other community standards and procedures.
| astro-ph.IM astro-ph.SR | in highresolution solar physics the volume and complexity of photometric spectroscopic and polarimetric groundbased data significantly increased in the last decade reaching data acquisition rates of terabytes per hour this is driven by the desire to capture fast processes on the sun and by the necessity for short exposure times freezing the atmospheric seeing thus enabling postfacto image restoration consequently largeformat and highcadence detectors are nowadays used in solar observations to facilitate image restoration based on our experience during the early science phase with the 15meter gregor solar telescope 20142015 and the subsequent transition to routine observations in 2016 we describe data collection and data management tailored towards image restoration and imaging spectroscopy we outline our approaches regarding data processing analysis and archiving for two of gregors postfocus instruments see httpgregoraipde ie the gregor fabryperot interferometer gfpi and the newly installed highresolution fast imager hifi the heterogeneous and complex nature of multidimensional data arising from highresolution solar observations provides an intriguing but also a challenging example for big data in astronomy the big data challenge has two aspects 1 establishing a workflow for publishing the data for the whole community and beyond and 2 creating a collaborative research environment cre where computationally intense data and postprocessing tools are colocated and collaborative work is enabled for scientists of multiple institutes this requires either collaboration with a data center or frameworks and databases capable of dealing with huge data sets based on virtual observatory vo and other community standards and procedures | [['in', 'highresolution', 'solar', 'physics', 'the', 'volume', 'and', 'complexity', 'of', 'photometric', 'spectroscopic', 'and', 'polarimetric', 'groundbased', 'data', 'significantly', 'increased', 'in', 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1,802.10147 | Multi-agent Time-based Decision-making for the Search and Action Problem | Many robotic applications, such as search-and-rescue, require multiple agents
to search for and perform actions on targets. However, such missions present
several challenges, including cooperative exploration, task selection and
allocation, time limitations, and computational complexity. To address this, we
propose a decentralized multi-agent decision-making framework for the search
and action problem with time constraints. The main idea is to treat time as an
allocated budget in a setting where each agent action incurs a time cost and
yields a certain reward. Our approach leverages probabilistic reasoning to make
near-optimal decisions leading to maximized reward. We evaluate our method in
the search, pick, and place scenario of the Mohamed Bin Zayed International
Robotics Challenge (MBZIRC), by using a probability density map and reward
prediction function to assess actions. Extensive simulations show that our
algorithm outperforms benchmark strategies, and we demonstrate system
integration in a Gazebo-based environment, validating the framework's readiness
for field application.
| cs.RO | many robotic applications such as searchandrescue require multiple agents to search for and perform actions on targets however such missions present several challenges including cooperative exploration task selection and allocation time limitations and computational complexity to address this we propose a decentralized multiagent decisionmaking framework for the search and action problem with time constraints the main idea is to treat time as an allocated budget in a setting where each agent action incurs a time cost and yields a certain reward our approach leverages probabilistic reasoning to make nearoptimal decisions leading to maximized reward we evaluate our method in the search pick and place scenario of the mohamed bin zayed international robotics challenge mbzirc by using a probability density map and reward prediction function to assess actions extensive simulations show that our algorithm outperforms benchmark strategies and we demonstrate system integration in a gazebobased environment validating the frameworks readiness for field application | [['many', 'robotic', 'applications', 'such', 'as', 'searchandrescue', 'require', 'multiple', 'agents', 'to', 'search', 'for', 'and', 'perform', 'actions', 'on', 'targets', 'however', 'such', 'missions', 'present', 'several', 'challenges', 'including', 'cooperative', 'exploration', 'task', 'selection', 'and', 'allocation', 'time', 'limitations', 'and', 'computational', 'complexity', 'to', 'address', 'this', 'we', 'propose', 'a', 'decentralized', 'multiagent', 'decisionmaking', 'framework', 'for', 'the', 'search', 'and', 'action', 'problem', 'with', 'time', 'constraints', 'the', 'main', 'idea', 'is', 'to', 'treat', 'time', 'as', 'an', 'allocated', 'budget', 'in', 'a', 'setting', 'where', 'each', 'agent', 'action', 'incurs', 'a', 'time', 'cost', 'and', 'yields', 'a', 'certain', 'reward', 'our', 'approach', 'leverages', 'probabilistic', 'reasoning', 'to', 'make', 'nearoptimal', 'decisions', 'leading', 'to', 'maximized', 'reward', 'we', 'evaluate', 'our', 'method', 'in', 'the', 'search', 'pick', 'and', 'place', 'scenario', 'of', 'the', 'mohamed', 'bin', 'zayed', 'international', 'robotics', 'challenge', 'mbzirc', 'by', 'using', 'a', 'probability', 'density', 'map', 'and', 'reward', 'prediction', 'function', 'to', 'assess', 'actions', 'extensive', 'simulations', 'show', 'that', 'our', 'algorithm', 'outperforms', 'benchmark', 'strategies', 'and', 'we', 'demonstrate', 'system', 'integration', 'in', 'a', 'gazebobased', 'environment', 'validating', 'the', 'frameworks', 'readiness', 'for', 'field', 'application']] | [-0.10895535578821718, -0.020721167439208613, -0.06923167767706297, 0.04691064363539786, -0.13080845137638664, -0.15647002975672286, 0.11750294604116668, 0.45759119815038923, -0.2577511126372889, -0.3667251772080727, 0.12046541578046953, -0.2215157033665883, -0.18430639293957626, 0.17004533720955203, -0.13547102363767805, 0.10060489028445538, 0.11061889114974696, 0.024803986334217255, 0.008499334763276039, -0.2655378839607036, 0.25183022688744305, 0.06156818084233743, 0.2798830910789355, 0.028491672948742938, 0.15014752616569252, 0.04539710299623822, -0.040686059734685386, -0.006255657162319943, -0.07170274029417459, 0.09962301993887526, 0.36727218532669575, 0.2402521943062889, 0.4145096567835634, -0.4146883062500235, -0.20285591179665352, 0.1150512745687183, 0.08936254966723431, 0.058504731798334826, -0.05719319693142832, -0.3144663242832912, 0.04177635566436297, -0.202999474212646, -0.04362065507567778, -0.12363876624569445, -0.024051680027708466, -0.00036335005255305015, -0.3406167441596653, -0.04553351447676981, -0.004446367141081402, 0.01901863975179018, -0.10181509149075788, -0.10131166206089941, 0.07296750007277442, 0.17943991744190776, 0.060998051569932786, 0.048836166822407025, 0.18295322852949333, -0.147922264386941, -0.23420226260624974, 0.42671724701213914, -0.021060637640920993, -0.1830772956515607, 0.19387920748824808, -0.04537060937924397, -0.19471391551936698, 0.07572118387887539, 0.26466596950561005, 0.14062521804628325, -0.15039916643996212, 0.06211063867767915, 0.007726483040069853, 0.18278262959114763, 0.0025990434169818628, 0.025537138918895794, 0.1550990956402168, 0.27578563316854715, 0.14932625070761654, 0.11927066955696915, -0.05099884987599062, -0.1424934076829906, -0.2392385858654612, -0.1454541411694904, -0.1423486307662733, -0.03205963392550779, -0.06661100729001648, -0.08831921722493227, 0.33102318147407067, 0.24529184222172032, 0.17282346517637076, 0.16455232218179283, 0.3718137595161105, 0.06846463265258276, 0.03477143636590104, 0.09364316654692262, 0.1381024970377746, -0.037355702182290375, 0.09843056788051266, -0.22743705459346145, 0.09145177429887337, 0.038202010903088064] |
1,802.10148 | Time-dependent treatment of tunneling and Time's Arrow problem | New time-dependent treatment of tunneling from localized state to continuum
is proposed. It does not use the Laplace transform (Green's function's method)
and can be applied for time-dependent potentials, as well. This approach
results in simple expressions describing dynamics of tunneling to Markovian and
non-Markovian reservoirs in the time-interval $-\infty<t<\infty$. It can
provide a new outlook for tunneling in the negative time region, illuminating
the origin of the time's arrow problem in quantum mechanics. We also
concentrate on singularity at $t=0$, which affects the perturbative expansion
of the evolution operator. In addition, the decay to continuum in periodically
modulated tunneling Hamiltonian is investigated. Using our results, we extend
the Tien-Gordon approach for periodically driven transport, to oscillating
tunneling barriers.
| quant-ph cond-mat.mes-hall | new timedependent treatment of tunneling from localized state to continuum is proposed it does not use the laplace transform greens functions method and can be applied for timedependent potentials as well this approach results in simple expressions describing dynamics of tunneling to markovian and nonmarkovian reservoirs in the timeinterval inftytinfty it can provide a new outlook for tunneling in the negative time region illuminating the origin of the times arrow problem in quantum mechanics we also concentrate on singularity at t0 which affects the perturbative expansion of the evolution operator in addition the decay to continuum in periodically modulated tunneling hamiltonian is investigated using our results we extend the tiengordon approach for periodically driven transport to oscillating tunneling barriers | [['new', 'timedependent', 'treatment', 'of', 'tunneling', 'from', 'localized', 'state', 'to', 'continuum', 'is', 'proposed', 'it', 'does', 'not', 'use', 'the', 'laplace', 'transform', 'greens', 'functions', 'method', 'and', 'can', 'be', 'applied', 'for', 'timedependent', 'potentials', 'as', 'well', 'this', 'approach', 'results', 'in', 'simple', 'expressions', 'describing', 'dynamics', 'of', 'tunneling', 'to', 'markovian', 'and', 'nonmarkovian', 'reservoirs', 'in', 'the', 'timeinterval', 'inftytinfty', 'it', 'can', 'provide', 'a', 'new', 'outlook', 'for', 'tunneling', 'in', 'the', 'negative', 'time', 'region', 'illuminating', 'the', 'origin', 'of', 'the', 'times', 'arrow', 'problem', 'in', 'quantum', 'mechanics', 'we', 'also', 'concentrate', 'on', 'singularity', 'at', 't0', 'which', 'affects', 'the', 'perturbative', 'expansion', 'of', 'the', 'evolution', 'operator', 'in', 'addition', 'the', 'decay', 'to', 'continuum', 'in', 'periodically', 'modulated', 'tunneling', 'hamiltonian', 'is', 'investigated', 'using', 'our', 'results', 'we', 'extend', 'the', 'tiengordon', 'approach', 'for', 'periodically', 'driven', 'transport', 'to', 'oscillating', 'tunneling', 'barriers']] | [-0.10240279358788197, 0.12393346383478962, -0.1264196831005148, 0.08937416207769244, -0.04256568387338594, -0.15904597427398592, 0.04214116554715115, 0.3897388654784495, -0.2837497997997689, -0.2164797490666143, 0.03781097563484512, -0.2735920114865323, -0.14502401778302274, 0.21128031519484244, -0.00807467125529353, 0.042358223012327646, 0.038234354591607546, 4.088200707998158e-05, -0.05239487058843071, -0.18958257847003826, 0.3035649345021601, 0.03692515734524442, 0.24760031276734687, 0.1049745327738278, 0.05683169931470722, 0.03752346499823034, 0.025651644011411595, 0.00034316064508146596, -0.14628611358607524, 0.038505189190227385, 0.2051873258412855, 0.02741022827103734, 0.23818071305501362, -0.48637417348555656, -0.22469153081481696, 0.03376876758881101, 0.19551053323916026, 0.1714216388024374, -0.0348024026250091, -0.3199776949267052, -0.01141967038240503, -0.13879958217368782, -0.15962572621979884, -0.09717695414041709, 0.01584527494010179, -0.00123676927681981, -0.24587876883828463, 0.14001079820298998, 0.01541821246461927, -0.02050062599753327, -0.09709582710149502, -0.02499238056905505, 0.02558283046662745, 0.10408598870555517, 0.009663323200691272, 0.016620890969144448, 0.1548659036976888, -0.08106642088680646, -0.1277616134210795, 0.32151460578712093, -0.1253946647224087, -0.21702773374159398, 0.1492990249547909, -0.18749834972770274, -0.09920549494050004, 0.13128090418969132, 0.12010018777947466, 0.14706827698572844, -0.20455863688115672, 0.1113069238514882, 0.03454639921512674, 0.09285925597954198, 0.07243058726606312, 0.019029052341122087, 0.19525979819684094, 0.16090576516605226, 0.03823618766922159, 0.1410532059459047, -0.06101271242271138, -0.17841449987237193, -0.33344878236755354, -0.13810740863638266, -0.20440016623523807, 0.10777960451891619, -0.042516487120100914, -0.19276069567593582, 0.39953854238661396, 0.1859414114248978, 0.17169213951604456, 0.020239523863380758, 0.27330075468605836, 0.22366144084332495, 0.022205708931912396, 0.052099305432008094, 0.18980656011311822, 0.13784896273619862, 0.12917039211949005, -0.2953628350084475, 0.02533944762711014, 0.0549190540366587] |
1,802.10149 | Transient Behavior near Liquid-Gas Interface at Supercritical Pressure | Numerical heat and mass transfer analysis of a configuration where a cool
liquid hydrocarbon is suddenly introduced to a hotter gas at supercritical
pressure shows that a well-defined phase equilibrium can be established before
substantial growth of typical hydrodynamic instabilities. The equilibrium
values at the interface quickly reach near-steady values. Sufficiently thick
diffusion layers form quickly around the liquid-gas interface (e.g., 3-10
microns for the liquid phase and 10-30 microns for the gas phase in 10-100
microseconds), where density variations become increasingly important with
pressure as mixing of species is enhanced. While the hydrocarbon vaporizes and
the gas condenses for all analyzed pressures, the net mass flux across the
interface reverses as pressure is increased, showing that a clear
vaporization-driven problem at low pressures may present condensation at higher
pressures. This is achieved while heat still conducts from gas to liquid.
Analysis of fundamental thermodynamic laws on a fixed-mass element containing
the diffusion layers proves the thermodynamic viability of the obtained
results.
| physics.flu-dyn | numerical heat and mass transfer analysis of a configuration where a cool liquid hydrocarbon is suddenly introduced to a hotter gas at supercritical pressure shows that a welldefined phase equilibrium can be established before substantial growth of typical hydrodynamic instabilities the equilibrium values at the interface quickly reach nearsteady values sufficiently thick diffusion layers form quickly around the liquidgas interface eg 310 microns for the liquid phase and 1030 microns for the gas phase in 10100 microseconds where density variations become increasingly important with pressure as mixing of species is enhanced while the hydrocarbon vaporizes and the gas condenses for all analyzed pressures the net mass flux across the interface reverses as pressure is increased showing that a clear vaporizationdriven problem at low pressures may present condensation at higher pressures this is achieved while heat still conducts from gas to liquid analysis of fundamental thermodynamic laws on a fixedmass element containing the diffusion layers proves the thermodynamic viability of the obtained results | [['numerical', 'heat', 'and', 'mass', 'transfer', 'analysis', 'of', 'a', 'configuration', 'where', 'a', 'cool', 'liquid', 'hydrocarbon', 'is', 'suddenly', 'introduced', 'to', 'a', 'hotter', 'gas', 'at', 'supercritical', 'pressure', 'shows', 'that', 'a', 'welldefined', 'phase', 'equilibrium', 'can', 'be', 'established', 'before', 'substantial', 'growth', 'of', 'typical', 'hydrodynamic', 'instabilities', 'the', 'equilibrium', 'values', 'at', 'the', 'interface', 'quickly', 'reach', 'nearsteady', 'values', 'sufficiently', 'thick', 'diffusion', 'layers', 'form', 'quickly', 'around', 'the', 'liquidgas', 'interface', 'eg', '310', 'microns', 'for', 'the', 'liquid', 'phase', 'and', '1030', 'microns', 'for', 'the', 'gas', 'phase', 'in', '10100', 'microseconds', 'where', 'density', 'variations', 'become', 'increasingly', 'important', 'with', 'pressure', 'as', 'mixing', 'of', 'species', 'is', 'enhanced', 'while', 'the', 'hydrocarbon', 'vaporizes', 'and', 'the', 'gas', 'condenses', 'for', 'all', 'analyzed', 'pressures', 'the', 'net', 'mass', 'flux', 'across', 'the', 'interface', 'reverses', 'as', 'pressure', 'is', 'increased', 'showing', 'that', 'a', 'clear', 'vaporizationdriven', 'problem', 'at', 'low', 'pressures', 'may', 'present', 'condensation', 'at', 'higher', 'pressures', 'this', 'is', 'achieved', 'while', 'heat', 'still', 'conducts', 'from', 'gas', 'to', 'liquid', 'analysis', 'of', 'fundamental', 'thermodynamic', 'laws', 'on', 'a', 'fixedmass', 'element', 'containing', 'the', 'diffusion', 'layers', 'proves', 'the', 'thermodynamic', 'viability', 'of', 'the', 'obtained', 'results']] | [-0.0957046680453216, 0.21962606305291194, -0.06522530474358741, 0.02145002712278702, 0.01923506018005728, -0.13309441296881216, 0.08161569597280544, 0.33655184353210077, -0.26397084129337217, -0.3051544444762772, 0.10735879232456202, -0.28283239387392256, -0.0038748760418445796, 0.14839653946713816, 0.035348281935320136, 0.001166443211953474, 0.006207840463655613, -0.031846912661625176, -0.0833436975874562, -0.16918729464682572, 0.26888550499451247, 0.0835906485462943, 0.26055065761696294, 0.11632929177179654, 0.07859708672108834, -0.11706814986092519, 0.0443826948656984, 0.03659369254496342, -0.16460107088637443, -0.00949344253753202, 0.25862045145321705, -0.022901813592183295, 0.2475317777105555, -0.42319655564168224, -0.2697981714252209, 0.048355288927946584, 0.14927671582433352, 0.08050793851581142, -0.07648583124203735, -0.20177792940543304, 0.03192267909946834, -0.15588288862830874, -0.1670792426983392, -0.037834590885163465, 0.040534897363218275, -0.01896685402878699, -0.2606731093436572, 0.1625614261127407, 0.035007876711348015, 0.08547304529893379, -0.09794427972772847, -0.14986867719671185, -0.10650995050366066, 0.07370891415959467, 0.03593488163835375, 0.04451414735363044, 0.24477672807710327, -0.15174157221899917, 0.05488936576604704, 0.38292250441537695, -0.09238898343412402, -0.06575560425726339, 0.2646002450680233, -0.18685045100817954, -0.0791337657488466, 0.2561952643767462, 0.1341548928251976, 0.08434690842086807, -0.13132274955487955, -0.011279324806614935, -0.006752575958084014, 0.20139355488376032, 0.10487825286094539, -0.030502735434666924, 0.29091440444603933, 0.21099245603852876, 0.055362974432360684, 0.15229146078486366, -0.10343651519076008, -0.1154260364366892, -0.23007256450994798, -0.19306315172764454, -0.12661162213355834, 0.03343507705505081, -0.10491386035962322, -0.14791372379068263, 0.295263264915018, 0.1342119879479034, 0.18797501073629588, 0.003691796616322841, 0.3059209211973867, 0.10051351603119119, 0.09125931362002533, 0.1196294799866444, 0.25465409183492943, 0.14314036250334256, 0.16416121339020523, -0.24184202581430028, 0.09603677216775554, 0.0368600400954323] |
1,802.1015 | Spin-orbit and anisotropic strain effects on the electronic correlations
of Sr$_2$RuO$_4$ | We present an implementation of the rotationally invariant slave boson
technique as an impurity solver for density functional theory plus dynamical
mean field theory (DFT+DMFT). Our approach provides explicit relations between
quantities in the local correlated subspace treated with DMFT and the Bloch
basis used to solve the DFT equations. In particular, we present an expression
for the mass enhancement of the quasiparticle states in reciprocal space. We
apply the method to the study of the electronic correlations in Sr$_2$RuO$_4$
under anisotropic strain. We find that the spin-orbit coupling plays a crucial
role in the mass enhancement differentiation between the quasi-one-dimensional
$\alpha$ and $\beta$ bands, and on its momentum dependence over the Fermi
surface. The mass enhancement, however, is only weakly affected by either
uniaxial or biaxial strain, even across the Lifshitz transition induced by the
strain.
| cond-mat.str-el | we present an implementation of the rotationally invariant slave boson technique as an impurity solver for density functional theory plus dynamical mean field theory dftdmft our approach provides explicit relations between quantities in the local correlated subspace treated with dmft and the bloch basis used to solve the dft equations in particular we present an expression for the mass enhancement of the quasiparticle states in reciprocal space we apply the method to the study of the electronic correlations in sr_2ruo_4 under anisotropic strain we find that the spinorbit coupling plays a crucial role in the mass enhancement differentiation between the quasionedimensional alpha and beta bands and on its momentum dependence over the fermi surface the mass enhancement however is only weakly affected by either uniaxial or biaxial strain even across the lifshitz transition induced by the strain | [['we', 'present', 'an', 'implementation', 'of', 'the', 'rotationally', 'invariant', 'slave', 'boson', 'technique', 'as', 'an', 'impurity', 'solver', 'for', 'density', 'functional', 'theory', 'plus', 'dynamical', 'mean', 'field', 'theory', 'dftdmft', 'our', 'approach', 'provides', 'explicit', 'relations', 'between', 'quantities', 'in', 'the', 'local', 'correlated', 'subspace', 'treated', 'with', 'dmft', 'and', 'the', 'bloch', 'basis', 'used', 'to', 'solve', 'the', 'dft', 'equations', 'in', 'particular', 'we', 'present', 'an', 'expression', 'for', 'the', 'mass', 'enhancement', 'of', 'the', 'quasiparticle', 'states', 'in', 'reciprocal', 'space', 'we', 'apply', 'the', 'method', 'to', 'the', 'study', 'of', 'the', 'electronic', 'correlations', 'in', 'sr_2ruo_4', 'under', 'anisotropic', 'strain', 'we', 'find', 'that', 'the', 'spinorbit', 'coupling', 'plays', 'a', 'crucial', 'role', 'in', 'the', 'mass', 'enhancement', 'differentiation', 'between', 'the', 'quasionedimensional', 'alpha', 'and', 'beta', 'bands', 'and', 'on', 'its', 'momentum', 'dependence', 'over', 'the', 'fermi', 'surface', 'the', 'mass', 'enhancement', 'however', 'is', 'only', 'weakly', 'affected', 'by', 'either', 'uniaxial', 'or', 'biaxial', 'strain', 'even', 'across', 'the', 'lifshitz', 'transition', 'induced', 'by', 'the', 'strain']] | [-0.1636594409449366, 0.15000885291002525, -0.08085726976503421, 0.07820353870548608, -0.0023646118105763066, -0.09367158113091667, 0.049496090433893414, 0.38884498023965064, -0.26144045256214204, -0.2832903485323717, -0.02019555604401432, -0.26500388333084485, -0.17551713263833502, 0.15350684092420894, 0.04764567478050063, 0.022778690075008948, -0.020428111273659406, 0.003547356518352554, -0.1473953345345238, -0.20007477295381038, 0.3376981468844044, 0.03978459517315139, 0.303515769838675, 0.07884620721868314, 0.05149280660561401, 0.0877280479813688, 0.037992424341802396, 0.01314674495263909, -0.1606963514675914, 0.08438944339838872, 0.22518710323004393, -0.039412758119377125, 0.2445499565261994, -0.42684506375791276, -0.1902952757290136, 0.022408115325740326, 0.13081395759988224, 0.13421502339578892, -0.07602628564162955, -0.28079903900052294, 0.008686400419712937, -0.16675103527160673, -0.15391872123301872, -0.1308209543400206, -0.012445840424599711, -0.035085317745879564, -0.26668815112572475, 0.17946544527857952, 0.02306509799945141, 0.08311889339646283, -0.12749761867381115, -0.08542872617619425, -0.061289002702496674, 0.06677600715384159, 0.08087027478575652, 0.07223606477219639, 0.16532057069537712, -0.12783002801728946, -0.06788317688713598, 0.3791678252555158, -0.1283272957033308, -0.206933137144975, 0.13727557742084465, -0.13836842301271068, -0.11352755592619307, 0.13277766458608592, 0.14763175797084496, 0.09296576012211451, -0.12783309791141945, 0.12753482056776552, 0.0011712724953060493, 0.18260201886228292, 0.007936368900330832, 0.05464251176963975, 0.20814494115647172, 0.14469265066134832, 0.06245682749516555, 0.09617514488198896, -0.127310880070661, -0.08746492139056977, -0.2811492073560392, -0.15466062763423732, -0.2047057380614272, 0.031888892162033784, -0.09203040154778694, -0.1996646257063007, 0.38356295740911667, 0.14516422935306048, 0.15234322349343749, -0.017565411457113825, 0.2316996482146537, 0.16404230220338506, 0.06841941071669129, 0.05916697596859214, 0.26168872063884335, 0.19899455262993865, 0.04750493584781967, -0.31883001784338566, 0.024378894597128796, 0.07388380455723317] |
1,802.10151 | Augmented CycleGAN: Learning Many-to-Many Mappings from Unpaired Data | Learning inter-domain mappings from unpaired data can improve performance in
structured prediction tasks, such as image segmentation, by reducing the need
for paired data. CycleGAN was recently proposed for this problem, but
critically assumes the underlying inter-domain mapping is approximately
deterministic and one-to-one. This assumption renders the model ineffective for
tasks requiring flexible, many-to-many mappings. We propose a new model, called
Augmented CycleGAN, which learns many-to-many mappings between domains. We
examine Augmented CycleGAN qualitatively and quantitatively on several image
datasets.
| cs.LG | learning interdomain mappings from unpaired data can improve performance in structured prediction tasks such as image segmentation by reducing the need for paired data cyclegan was recently proposed for this problem but critically assumes the underlying interdomain mapping is approximately deterministic and onetoone this assumption renders the model ineffective for tasks requiring flexible manytomany mappings we propose a new model called augmented cyclegan which learns manytomany mappings between domains we examine augmented cyclegan qualitatively and quantitatively on several image datasets | [['learning', 'interdomain', 'mappings', 'from', 'unpaired', 'data', 'can', 'improve', 'performance', 'in', 'structured', 'prediction', 'tasks', 'such', 'as', 'image', 'segmentation', 'by', 'reducing', 'the', 'need', 'for', 'paired', 'data', 'cyclegan', 'was', 'recently', 'proposed', 'for', 'this', 'problem', 'but', 'critically', 'assumes', 'the', 'underlying', 'interdomain', 'mapping', 'is', 'approximately', 'deterministic', 'and', 'onetoone', 'this', 'assumption', 'renders', 'the', 'model', 'ineffective', 'for', 'tasks', 'requiring', 'flexible', 'manytomany', 'mappings', 'we', 'propose', 'a', 'new', 'model', 'called', 'augmented', 'cyclegan', 'which', 'learns', 'manytomany', 'mappings', 'between', 'domains', 'we', 'examine', 'augmented', 'cyclegan', 'qualitatively', 'and', 'quantitatively', 'on', 'several', 'image', 'datasets']] | [-0.06319306670993682, -0.00889304728480056, -0.020831182054826057, 0.1315690061004716, -0.12376130534685217, -0.21236686988850123, 0.059546649956610055, 0.4786677000578493, -0.3247311593266204, -0.35806554090231657, 0.04259186752460664, -0.26691333975177256, -0.21845755123067648, 0.16219184310757556, -0.18685670612030664, 0.11058316230773926, 0.11809331433905754, -0.01670758007094264, -0.08628877291921526, -0.21047627396183088, 0.3310418598819524, -0.0036323508014902473, 0.3818115482456051, 0.05122554006520659, 0.15463437155995052, 0.022127054206794127, -0.028770962715498172, -0.04318042199884076, -0.039434463271754795, 0.18124232387781375, 0.32067670408869164, 0.22472683295491153, 0.28628840200835837, -0.42395110947545617, -0.2596123677911237, 0.11378809247980826, 0.13868265179116862, 0.0920679364064199, -0.08026311854046071, -0.34308053969871255, 0.07532690006773919, -0.1292916757724015, 0.07389996731799328, -0.16623306294786744, -0.06064172324840911, -0.043943964806385336, -0.3359856689348817, 0.06292902463464997, 0.09477317412383854, 0.060002262087073176, -0.07827039251569659, -0.047885915485676375, 0.007923317258246243, 0.15793545439082662, 0.0130293111957144, 0.10424975617206655, 0.10170478665968403, -0.1523689664027188, -0.1368519142153673, 0.3629395857336931, -0.01971194170182571, -0.2673035768792033, 0.2303521267414908, 0.019690730836009605, -0.14641605086508208, 0.046421759377699344, 0.19113097628578543, 0.11058956088963896, -0.20317170458147302, 0.05600178331224015, -0.09662239935714752, 0.19223558033118024, 0.0582593415863812, -0.06510369478492066, 0.1482108573341975, 0.25348316547460853, 0.050216424350946906, 0.18623075530631467, -0.108714254325605, -0.08276191955956165, -0.1692512028152123, -0.07669299236731604, -0.18291559012286598, -0.07168779211206129, -0.09276157264794165, -0.11688696839846671, 0.3815858721791301, 0.2275631062395405, 0.22673375066369772, 0.1066565876652021, 0.3600320561090484, -0.010670664768258575, 0.11520618121139706, 0.09817875830340199, 0.16725286652799695, -0.0055338836391456425, 0.10268901333329268, -0.13833277401572558, 0.11410577412461861, 0.09132633844274096] |
1,802.10152 | Optimal Filter Design for Consensus on Random Directed Graphs | Optimal design of consensus acceleration graph filters relates closely to the
eigenvalues of the consensus iteration matrix. This task is complicated by
random networks with uncertain iteration matrix eigenvalues. Filter design
methods based on the spectral asymptotics of consensus iteration matrices for
large-scale, random undirected networks have been previously developed both for
constant and for time-varying network topologies. This work builds upon these
results by extending analysis to large-scale, constant, random directed
networks. The proposed approach uses theorems by Girko that analytically
produce deterministic approximations of the empirical spectral distribution for
suitable non-Hermitian random matrices. The approximate empirical spectral
distribution defines filtering regions in the proposed filter optimization
problem, which must be modified to accommodate complex-valued eigenvalues.
Presented numerical simulations demonstrate good results. Additionally,
limitations of the proposed method are discussed.
| eess.SP | optimal design of consensus acceleration graph filters relates closely to the eigenvalues of the consensus iteration matrix this task is complicated by random networks with uncertain iteration matrix eigenvalues filter design methods based on the spectral asymptotics of consensus iteration matrices for largescale random undirected networks have been previously developed both for constant and for timevarying network topologies this work builds upon these results by extending analysis to largescale constant random directed networks the proposed approach uses theorems by girko that analytically produce deterministic approximations of the empirical spectral distribution for suitable nonhermitian random matrices the approximate empirical spectral distribution defines filtering regions in the proposed filter optimization problem which must be modified to accommodate complexvalued eigenvalues presented numerical simulations demonstrate good results additionally limitations of the proposed method are discussed | [['optimal', 'design', 'of', 'consensus', 'acceleration', 'graph', 'filters', 'relates', 'closely', 'to', 'the', 'eigenvalues', 'of', 'the', 'consensus', 'iteration', 'matrix', 'this', 'task', 'is', 'complicated', 'by', 'random', 'networks', 'with', 'uncertain', 'iteration', 'matrix', 'eigenvalues', 'filter', 'design', 'methods', 'based', 'on', 'the', 'spectral', 'asymptotics', 'of', 'consensus', 'iteration', 'matrices', 'for', 'largescale', 'random', 'undirected', 'networks', 'have', 'been', 'previously', 'developed', 'both', 'for', 'constant', 'and', 'for', 'timevarying', 'network', 'topologies', 'this', 'work', 'builds', 'upon', 'these', 'results', 'by', 'extending', 'analysis', 'to', 'largescale', 'constant', 'random', 'directed', 'networks', 'the', 'proposed', 'approach', 'uses', 'theorems', 'by', 'girko', 'that', 'analytically', 'produce', 'deterministic', 'approximations', 'of', 'the', 'empirical', 'spectral', 'distribution', 'for', 'suitable', 'nonhermitian', 'random', 'matrices', 'the', 'approximate', 'empirical', 'spectral', 'distribution', 'defines', 'filtering', 'regions', 'in', 'the', 'proposed', 'filter', 'optimization', 'problem', 'which', 'must', 'be', 'modified', 'to', 'accommodate', 'complexvalued', 'eigenvalues', 'presented', 'numerical', 'simulations', 'demonstrate', 'good', 'results', 'additionally', 'limitations', 'of', 'the', 'proposed', 'method', 'are', 'discussed']] | [-0.08670035062201378, 0.02050367029710808, -0.08137416074713176, 0.049872546754457514, -0.09451548177180172, -0.17977613267730494, 0.029178915260971047, 0.4449507284141679, -0.24597050808014648, -0.29153325721507767, 0.10495107431757399, -0.21215503644162634, -0.24249054403364204, 0.14169895779057087, -0.0684474746888603, 0.19135058062588298, 0.13135754910674485, -0.0058351231113303705, -0.06068179974792781, -0.25923419871499925, 0.299648352720924, 0.10258022108548925, 0.31432115317336534, -0.007400107527336546, 0.10560594615348765, 0.0011675679658091705, -0.06606092213702794, 0.007862758485934492, -0.09991961707147096, 0.13536658938814183, 0.2832784646382655, 0.15601931079930648, 0.3139550380678919, -0.40492527897803837, -0.2423744976150853, 0.12840975174113384, 0.17231778367173695, 0.074545148830285, -0.020972330408448082, -0.3089085459737605, 0.13422886548805554, -0.13677329658210732, -0.09375820019485016, -0.09894516559687393, -0.026991903035410943, 0.08119001867114531, -0.33864985136244136, 0.05337329982168518, 0.05073018944626745, -0.0008827304638182844, -0.009819714535553832, -0.18099485433354745, 0.06264822324560174, 0.0845399521947092, 0.003578004664611489, -0.06308277914449857, 0.13342434757581081, -0.026019830395332504, -0.16752931365444687, 0.30312047711082996, -0.02635733322382599, -0.23862358322878055, 0.09833739896639045, -0.038471075704406575, -0.16275018822927853, 0.13559487335053308, 0.18816319499089282, 0.11748600549256528, -0.17033053178141136, 0.0943290103757434, -0.05489761021187287, 0.1237211928574923, 0.034852941285904125, -0.0184550900616548, 0.09462190592370018, 0.13348682906535517, 0.1434515880346156, 0.12580543498505078, -0.02531915885851299, -0.17872921358758428, -0.21277880377868433, -0.04084975474322115, -0.2844334334376773, 0.00042029068972346663, -0.20078438459635617, -0.19589161835184307, 0.4231657425496187, 0.1891598699344251, 0.19574478970314482, 0.136624549857682, 0.2952151986421975, 0.15856659646103344, 0.02562799185642418, 0.12439147862454678, 0.18547746730590228, 0.20471417329821537, 0.12478842644575443, -0.1983194533763951, 0.08575204958719777, 0.12512188010763747] |
1,802.10153 | Slip Detection with Combined Tactile and Visual Information | Slip detection plays a vital role in robotic manipulation and it has long
been a challenging problem in the robotic community. In this paper, we propose
a new method based on deep neural network (DNN) to detect slip. The training
data is acquired by a GelSight tactile sensor and a camera mounted on a gripper
when we use a robot arm to grasp and lift 94 daily objects with different
grasping forces and grasping positions. The DNN is trained to classify whether
a slip occurred or not. To evaluate the performance of the DNN, we test 10
unseen objects in 152 grasps. A detection accuracy as high as 88.03% is
achieved. It is anticipated that the accuracy can be further improved with a
larger dataset. This method is beneficial for robots to make stable grasps,
which can be widely applied to automatic force control, grasping strategy
selection and fine manipulation.
| cs.RO | slip detection plays a vital role in robotic manipulation and it has long been a challenging problem in the robotic community in this paper we propose a new method based on deep neural network dnn to detect slip the training data is acquired by a gelsight tactile sensor and a camera mounted on a gripper when we use a robot arm to grasp and lift 94 daily objects with different grasping forces and grasping positions the dnn is trained to classify whether a slip occurred or not to evaluate the performance of the dnn we test 10 unseen objects in 152 grasps a detection accuracy as high as 8803 is achieved it is anticipated that the accuracy can be further improved with a larger dataset this method is beneficial for robots to make stable grasps which can be widely applied to automatic force control grasping strategy selection and fine manipulation | [['slip', 'detection', 'plays', 'a', 'vital', 'role', 'in', 'robotic', 'manipulation', 'and', 'it', 'has', 'long', 'been', 'a', 'challenging', 'problem', 'in', 'the', 'robotic', 'community', 'in', 'this', 'paper', 'we', 'propose', 'a', 'new', 'method', 'based', 'on', 'deep', 'neural', 'network', 'dnn', 'to', 'detect', 'slip', 'the', 'training', 'data', 'is', 'acquired', 'by', 'a', 'gelsight', 'tactile', 'sensor', 'and', 'a', 'camera', 'mounted', 'on', 'a', 'gripper', 'when', 'we', 'use', 'a', 'robot', 'arm', 'to', 'grasp', 'and', 'lift', '94', 'daily', 'objects', 'with', 'different', 'grasping', 'forces', 'and', 'grasping', 'positions', 'the', 'dnn', 'is', 'trained', 'to', 'classify', 'whether', 'a', 'slip', 'occurred', 'or', 'not', 'to', 'evaluate', 'the', 'performance', 'of', 'the', 'dnn', 'we', 'test', '10', 'unseen', 'objects', 'in', '152', 'grasps', 'a', 'detection', 'accuracy', 'as', 'high', 'as', '8803', 'is', 'achieved', 'it', 'is', 'anticipated', 'that', 'the', 'accuracy', 'can', 'be', 'further', 'improved', 'with', 'a', 'larger', 'dataset', 'this', 'method', 'is', 'beneficial', 'for', 'robots', 'to', 'make', 'stable', 'grasps', 'which', 'can', 'be', 'widely', 'applied', 'to', 'automatic', 'force', 'control', 'grasping', 'strategy', 'selection', 'and', 'fine', 'manipulation']] | [-0.08366526272511203, 0.03631939856341771, -0.09248804620735897, 0.0044570116555918285, -0.1701204663192566, -0.22243902266913113, 0.02342018524837999, 0.47710348495701016, -0.20753989356176164, -0.3947034748458622, 0.10760955268129606, -0.1961606234537075, -0.19028798557799184, 0.21114143650922548, -0.17796996622127575, 0.1004147575418121, 0.14487856874498695, 0.06302062478916556, -0.0009207149026852926, -0.27099599813942443, 0.2358891528174781, 0.047684340867262344, 0.2955932149963591, 0.034571239455984344, 0.18995779386687173, -0.02577473822631092, 0.03901754740013072, 0.01298260193039982, -0.04646172537727183, 0.12397510824403132, 0.31732089570473454, 0.12973435929876395, 0.3143203624292908, -0.38818334968723106, -0.18405986359911727, 0.11406357397931634, 0.1273864829544003, 0.10686251788240726, -0.020389374661190597, -0.37631801635201945, 0.10469116145532403, -0.1716973952882245, -0.06990829309536106, -0.10613128294755748, 0.032218875522856544, -0.03399800556093054, -0.29004928623888665, -0.013411540391967451, 0.019313143785017847, 0.10712250161465982, -0.08061526318068223, -0.022827615489520683, 0.038679080555096716, 0.2030907258738673, -0.0126480237852732, 0.0917727249493235, 0.2239524369571833, -0.20128637178907063, -0.10401276012120031, 0.4010099937401762, -0.011738448342833442, -0.21655417487475295, 0.21558550232240067, -0.032379529817067335, -0.1159666171734965, 0.11836642194101775, 0.2672705287488815, 0.15573623904102052, -0.1780516230521744, -0.05626013174523355, -0.013942757844862421, 0.19558866622298332, 0.0771567086570415, -0.08067825066875792, 0.2006412944529868, 0.3036237446225605, 0.07306294631050438, 0.13729846192017547, -0.21450475899615143, -0.007830439987061108, -0.19847541412763647, -0.1257074264896996, -0.17712506102148018, 0.0005168579566650305, -0.0531277995670469, -0.11171766982613844, 0.3525549963416669, 0.24239081342473326, 0.19608277662488438, 0.06219177638514955, 0.3487244037373754, 0.005664477854554585, 0.15709263168512874, 0.045082685712649916, 0.27644243441372107, -0.006159579851695855, 0.12495136444516255, -0.1883334722479293, 0.1035982257258397, 0.03873074282235747] |
1,802.10154 | Integrable Dispersive Chains and Their Multi-Phase Solutions | In this paper we construct multi-phase solutions for integrable dispersive
chains associated with the three-dimensional linearly degenerate Mikhalev
system of first order. These solutions are parameterized by infinitely many
arbitrary parameters. As byproduct we describe multi-phase solutions for finite
component dispersive reductions of these integrable dispersive chains.
| nlin.SI | in this paper we construct multiphase solutions for integrable dispersive chains associated with the threedimensional linearly degenerate mikhalev system of first order these solutions are parameterized by infinitely many arbitrary parameters as byproduct we describe multiphase solutions for finite component dispersive reductions of these integrable dispersive chains | [['in', 'this', 'paper', 'we', 'construct', 'multiphase', 'solutions', 'for', 'integrable', 'dispersive', 'chains', 'associated', 'with', 'the', 'threedimensional', 'linearly', 'degenerate', 'mikhalev', 'system', 'of', 'first', 'order', 'these', 'solutions', 'are', 'parameterized', 'by', 'infinitely', 'many', 'arbitrary', 'parameters', 'as', 'byproduct', 'we', 'describe', 'multiphase', 'solutions', 'for', 'finite', 'component', 'dispersive', 'reductions', 'of', 'these', 'integrable', 'dispersive', 'chains']] | [-0.1889321754508196, 0.15184981666723305, 0.014558200823499802, 0.06262545946222592, -0.07797474472565537, -0.16428759793176295, -0.09111680230868861, 0.36202432968197984, -0.32137723948727265, -0.21375789743986853, 0.1503423242606817, -0.320126700551903, -0.11906103994895487, 0.19671761730012108, 0.04578109844488666, 0.16097974801000128, 0.05801655199537252, -0.052801120179170304, -0.07556252181529999, -0.23115080099632132, 0.39132566853089534, -0.08848005818559769, 0.18096429518760837, -0.027926672586893783, 0.1650396259105269, -0.0037589121183895682, -0.008947234917828378, 0.022141829489710482, -0.2186409154748346, 0.08682700520024654, 0.3428529651954453, -0.04244121241363439, 0.17760279872751933, -0.4369050842967439, -0.24561992109297437, 0.09263233919727042, 0.24817180834670968, 0.16225288071213884, -0.022190336029025468, -0.21237809680640063, 0.0431363156976852, -0.22324769318777513, -0.2647560276586483, -0.12899603030862325, -0.021021463373240006, 0.1548905731872358, -0.20804549670441352, 0.09400595976237922, 0.12368678590877259, 0.004303965222169744, -0.126765753132628, -0.031873204188044874, 0.011292533968832898, 0.02712701671221789, 0.02191181099438604, -0.06328836817571774, -0.026025732317840323, -0.09310446451715332, -0.0755531649957312, 0.3461457428304439, -0.10398328089046273, -0.2592331386627035, 0.2375435906343479, -0.04059761395043832, -0.18101700974945376, 0.1864225362288825, 0.17683006507007681, 0.12762881394356806, -0.16221739736167676, 0.12954142065520616, -0.10251108555004318, 0.15254429065959252, 0.052125647193455, 0.037652162795371195, 0.12500136823175437, 0.12641546019214264, 0.09597313820082258, 0.1698998252445079, 0.03683366657091067, -0.1268779641770302, -0.3463378661173455, -0.13786362388983686, -0.07826513775743227, 0.09651505721217775, -0.09363739919710032, -0.2202565503564287, 0.40636999001528357, 0.10295971107490837, 0.1445282775353878, 0.0506636556237936, 0.17958585971451185, 0.1716910740732156, -0.025353149055166446, 0.06357421781719128, 0.175525125680848, 0.16636393164244898, 0.06617662784187718, -0.20279027983308473, -0.05025772343171721, 0.14684256385179592] |
1,802.10155 | Volume of small balls and sub-Riemannian curvature in 3D contact
manifolds | We compute the asymptotic expansion of the volume of small sub-Riemannian
balls in a contact 3-dimensional manifold, and we express the first meaningful
geometric coefficients in terms of geometric invariants of the sub-Riemannian
structure
| math.DG math.MG math.OC | we compute the asymptotic expansion of the volume of small subriemannian balls in a contact 3dimensional manifold and we express the first meaningful geometric coefficients in terms of geometric invariants of the subriemannian structure | [['we', 'compute', 'the', 'asymptotic', 'expansion', 'of', 'the', 'volume', 'of', 'small', 'subriemannian', 'balls', 'in', 'a', 'contact', '3dimensional', 'manifold', 'and', 'we', 'express', 'the', 'first', 'meaningful', 'geometric', 'coefficients', 'in', 'terms', 'of', 'geometric', 'invariants', 'of', 'the', 'subriemannian', 'structure']] | [-0.19852416787077398, 0.01808824034079033, -0.11436946158680845, 0.09952145551933962, -0.10828089423696785, -0.02904813749003498, -0.018078744260813382, 0.300352933433126, -0.3091498178375118, -0.2445836140335921, 0.07286638957585263, -0.2605922859819496, -0.200437031686306, 0.12965675640632124, -0.1557949175236418, 0.03961285274914082, 0.04597755422925248, 0.12557149989366093, -0.17820084563401692, -0.22492138224462158, 0.4033761616138851, -0.003193841644507997, 0.18956056626184897, 0.10483772697283283, 0.1930180949104183, -0.021371069240986425, -0.04814664540154969, 0.07735564241952755, -0.27834764416055646, 0.199805320103598, 0.2269397304557702, -0.005548228044062853, 0.12671175731263837, -0.42662453498033914, -0.13337021668934645, 0.11413872817202526, 0.116853644776925, 0.04157289572279243, 0.06542009726057157, -0.2678162397488075, 0.06022536813500611, -0.08804937035721891, -0.1875688942039714, -0.13821397699853954, 0.019084790201090714, 0.022242081899415043, -0.1642169084841632, 0.10168176396366428, 0.09309364915551509, 0.10103543513618848, -0.09035601721638266, -0.06124253790168201, -0.008870225810610196, 0.194551692220985, 0.010900886181522818, -0.02358100042842767, 0.12447025432415745, -0.07170251429574016, -0.04855732117122149, 0.41276075471850004, -0.06873236749978627, -0.2891267242238802, 0.09127296879887581, -0.21836854891358493, -0.18867834005504847, 0.10962723151725881, 0.2323533565572956, 0.17952175635625334, -0.11200878662502338, 0.17045026217580445, -0.032232013531029224, 0.01696744769373361, 0.11756576772998362, -0.0013241954147815704, 0.1008875964428572, 0.11535362126853536, 0.09907982854501289, 0.16252562177525012, -0.03973492228097337, -0.1257159197703004, -0.3965617096161141, -0.2703183944172719, -0.20468973510843866, 0.12398230157080381, -0.3046070753647227, -0.22986975539585247, 0.3882669611450504, 0.003948411082520205, 0.25253085737280984, 0.10083498418166795, 0.26001052813166203, 0.05153811032719472, 0.021446782766896134, 0.08946992359671961, 0.1792396824765841, 0.17635447126539314, 0.02345779406673768, -0.1942078089889358, -0.002474550623446703, 0.1865035104291404] |
1,802.10156 | Interfacial waveforms in chiral lattices with gyroscopic spinners | We demonstrate a new method of achieving topologically protected states in a
discrete hexagonal lattice by attaching gyroscopic spinners, which bring
chirality to the system. Dispersive features of this medium are investigated in
detail and, by tuning the parameters of the spinners, it is shown one can
manipulate the locations of stop-bands and Dirac points. We show that in
proximity of such points, uni-directional interfacial waveforms can be created
in an inhomogeneous lattice and the direction of such waveforms can be
controlled. The effect of inserting additional internal links into the system,
which is thus transformed in a heterogeneous triangular lattice, is also
investigated. This work introduces a new perspective in the design of periodic
media possessing non-trivial topological features.
| physics.class-ph cond-mat.mes-hall | we demonstrate a new method of achieving topologically protected states in a discrete hexagonal lattice by attaching gyroscopic spinners which bring chirality to the system dispersive features of this medium are investigated in detail and by tuning the parameters of the spinners it is shown one can manipulate the locations of stopbands and dirac points we show that in proximity of such points unidirectional interfacial waveforms can be created in an inhomogeneous lattice and the direction of such waveforms can be controlled the effect of inserting additional internal links into the system which is thus transformed in a heterogeneous triangular lattice is also investigated this work introduces a new perspective in the design of periodic media possessing nontrivial topological features | [['we', 'demonstrate', 'a', 'new', 'method', 'of', 'achieving', 'topologically', 'protected', 'states', 'in', 'a', 'discrete', 'hexagonal', 'lattice', 'by', 'attaching', 'gyroscopic', 'spinners', 'which', 'bring', 'chirality', 'to', 'the', 'system', 'dispersive', 'features', 'of', 'this', 'medium', 'are', 'investigated', 'in', 'detail', 'and', 'by', 'tuning', 'the', 'parameters', 'of', 'the', 'spinners', 'it', 'is', 'shown', 'one', 'can', 'manipulate', 'the', 'locations', 'of', 'stopbands', 'and', 'dirac', 'points', 'we', 'show', 'that', 'in', 'proximity', 'of', 'such', 'points', 'unidirectional', 'interfacial', 'waveforms', 'can', 'be', 'created', 'in', 'an', 'inhomogeneous', 'lattice', 'and', 'the', 'direction', 'of', 'such', 'waveforms', 'can', 'be', 'controlled', 'the', 'effect', 'of', 'inserting', 'additional', 'internal', 'links', 'into', 'the', 'system', 'which', 'is', 'thus', 'transformed', 'in', 'a', 'heterogeneous', 'triangular', 'lattice', 'is', 'also', 'investigated', 'this', 'work', 'introduces', 'a', 'new', 'perspective', 'in', 'the', 'design', 'of', 'periodic', 'media', 'possessing', 'nontrivial', 'topological', 'features']] | [-0.20921446953919562, 0.19315191278498484, -0.06806537172136208, -0.020365586557697195, -0.0882655167641739, -0.14011415864030521, 0.045677053668381026, 0.400777772658815, -0.3097315377827423, -0.2716266946323837, 0.05894559610557432, -0.2686707735216866, -0.20794093676377087, 0.1671245534826691, -0.02839996647865822, 0.033342787720418224, 0.029477800075740863, -0.021137289823188136, -0.05485122984913081, -0.20960101735157272, 0.3107790938578546, -0.004088797556081166, 0.29181546180819473, 0.05468296679512908, 0.0767820381714652, -0.015278123997268267, 0.02269509851685143, 0.05336477115439872, -0.09485449193046709, 0.11807816222377975, 0.20510013671591878, -0.01432078614210089, 0.20121976858160148, -0.4526828614611683, -0.24612003828709325, 0.027882038367291292, 0.16460954885696993, 0.15970279267639853, -0.0707789125716469, -0.33008773170101147, 0.10170495121274144, -0.14894430713999707, -0.1544501726437981, -0.09288658016206076, -0.026248051107783492, 0.02110059473197907, -0.25580424802416624, 0.01331030147630372, 0.08504368363743803, 0.04805260874757854, -0.05307131706310126, -0.049794939478548864, -0.08226314892914767, 0.13049795956467278, -0.0014549737932005276, -0.003942141266694913, 0.08629260319042563, -0.11993017470037254, -0.12263527772544573, 0.42710882760584357, -0.024483454098420527, -0.24716110334265978, 0.1565790701851559, -0.09220209032064304, -0.06757664855686016, 0.12995086880206752, 0.18886938735377043, 0.08305936196120456, -0.15519817331175242, 0.045408518723464415, -0.05014619194747259, 0.16396654853985335, 0.07812818549767447, 0.06177508921828121, 0.2547980381020655, 0.16914698712159104, 0.08634028407589843, 0.20369968554587103, -0.05761797790428318, -0.07593091477950414, -0.24577097684765856, -0.15534970012571042, -0.22141924771325042, 0.036577639045814674, -0.06921754278992012, -0.17269005419681585, 0.4486076587345451, 0.1285123299031208, 0.20461381435161458, -0.09166479975101538, 0.25281682940355193, 0.1240511278815878, 0.0780895431448395, 0.0470958769825908, 0.23828104984519693, 0.06050724035788638, 0.0619985792824688, -0.21997969603398815, 0.02463624810334295, 0.0472064007151251] |
1,802.10157 | SCARLET: Source separation in multi-band images by Constrained Matrix
Factorization | We present the source separation framework SCARLET for multi-band images,
which is based on a generalization of the Non-negative Matrix Factorization to
alternative and several simultaneous constraints. Our approach describes the
observed scene as a mixture of components with compact spatial support and
uniform spectra over their support. We present the algorithm to perform the
matrix factorization and introduce constraints that are useful for optical
images of stars and distinct stellar populations in galaxies, in particular
symmetry and monotonicity with respect to the source peak position. We also
derive the treatment of correlated noise and convolutions with band-dependent
point spread functions, rendering our approach applicable to coadded images
observed under variable seeing conditions. SCARLET thus yields a PSF-matched
photometry measurement with an optimally chosen weight function given by the
mean morphology in all available bands. We demonstrate the performance of
SCARLET for deblending crowded extragalactic scenes and on an AGN jet -- host
galaxy separation problem in deep 5-band imaging from the Hyper Suprime-Cam
Stategic Survey Program. Using simulations with prominent crowding we show that
SCARLET yields superior results to the HSC-SDSS deblender for the recovery of
total fluxes, colors, and morphologies. Due to its non-parametric nature, a
conceptual limitation of SCARLET is its sensitivity to undetected sources or
multiple stellar population within detected sources, but an iterative strategy
that adds components at the location of significant residuals appears
promising. The code is implemented in Python with C++ extensions and is
available at https://github.com/fred3m/scarlet
| astro-ph.IM | we present the source separation framework scarlet for multiband images which is based on a generalization of the nonnegative matrix factorization to alternative and several simultaneous constraints our approach describes the observed scene as a mixture of components with compact spatial support and uniform spectra over their support we present the algorithm to perform the matrix factorization and introduce constraints that are useful for optical images of stars and distinct stellar populations in galaxies in particular symmetry and monotonicity with respect to the source peak position we also derive the treatment of correlated noise and convolutions with banddependent point spread functions rendering our approach applicable to coadded images observed under variable seeing conditions scarlet thus yields a psfmatched photometry measurement with an optimally chosen weight function given by the mean morphology in all available bands we demonstrate the performance of scarlet for deblending crowded extragalactic scenes and on an agn jet host galaxy separation problem in deep 5band imaging from the hyper suprimecam stategic survey program using simulations with prominent crowding we show that scarlet yields superior results to the hscsdss deblender for the recovery of total fluxes colors and morphologies due to its nonparametric nature a conceptual limitation of scarlet is its sensitivity to undetected sources or multiple stellar population within detected sources but an iterative strategy that adds components at the location of significant residuals appears promising the code is implemented in python with c extensions and is available at httpsgithubcomfred3mscarlet | [['we', 'present', 'the', 'source', 'separation', 'framework', 'scarlet', 'for', 'multiband', 'images', 'which', 'is', 'based', 'on', 'a', 'generalization', 'of', 'the', 'nonnegative', 'matrix', 'factorization', 'to', 'alternative', 'and', 'several', 'simultaneous', 'constraints', 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1,802.10158 | KELT: The Kilodegree Extremely Little Telescope, a Survey for Exoplanets
Transiting Bright, Hot Stars | The KELT project was originally designed as a small-aperture, wide-field
photometric survey that would be optimally sensitive to planets transiting
bright (V~8-10) stars. This magnitude range corresponded to the gap between the
faint magnitude limit where radial velocity surveys were complete, and the
bright magnitude limit for transiting planet hosts routinely found by dedicated
ground-based transit surveys. Malmquist bias and other factors have also led
the KELT survey to focus on discovering planets transiting relatively hot host
stars as well. To date, the survey has discovered 22 transiting hot Jupiters,
including some of the brightest transiting planet host stars known to date.
Over half of these planets transit rapidly-rotating stars with Teff > 6250 K,
which had been largely eschewed by both radial velocity and transit surveys,
due to the challenge of obtaining precision radial velocities for such stars.
The KELT survey has developed a protocol and specialized software for
confirming transiting planets around stars rotating as rapidly as ~200 km/s.
This chapter reviews KELT planet discoveries, describes their scientific value,
and also briefly discusses the non-exoplanet science produced by the KELT
project, especially long-timescale phenomena and preparations for the TESS
mission.
| astro-ph.EP | the kelt project was originally designed as a smallaperture widefield photometric survey that would be optimally sensitive to planets transiting bright v810 stars this magnitude range corresponded to the gap between the faint magnitude limit where radial velocity surveys were complete and the bright magnitude limit for transiting planet hosts routinely found by dedicated groundbased transit surveys malmquist bias and other factors have also led the kelt survey to focus on discovering planets transiting relatively hot host stars as well to date the survey has discovered 22 transiting hot jupiters including some of the brightest transiting planet host stars known to date over half of these planets transit rapidlyrotating stars with teff 6250 k which had been largely eschewed by both radial velocity and transit surveys due to the challenge of obtaining precision radial velocities for such stars the kelt survey has developed a protocol and specialized software for confirming transiting planets around stars rotating as rapidly as 200 kms this chapter reviews kelt planet discoveries describes their scientific value and also briefly discusses the nonexoplanet science produced by the kelt project especially longtimescale phenomena and preparations for the tess mission | [['the', 'kelt', 'project', 'was', 'originally', 'designed', 'as', 'a', 'smallaperture', 'widefield', 'photometric', 'survey', 'that', 'would', 'be', 'optimally', 'sensitive', 'to', 'planets', 'transiting', 'bright', 'v810', 'stars', 'this', 'magnitude', 'range', 'corresponded', 'to', 'the', 'gap', 'between', 'the', 'faint', 'magnitude', 'limit', 'where', 'radial', 'velocity', 'surveys', 'were', 'complete', 'and', 'the', 'bright', 'magnitude', 'limit', 'for', 'transiting', 'planet', 'hosts', 'routinely', 'found', 'by', 'dedicated', 'groundbased', 'transit', 'surveys', 'malmquist', 'bias', 'and', 'other', 'factors', 'have', 'also', 'led', 'the', 'kelt', 'survey', 'to', 'focus', 'on', 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1,802.10159 | Spectral Statistics of Directed Networks with Random Link Model
Transpose-Asymmetry | Stochastic network influences complicate graph filter design by producing
uncertainty in network iteration matrix eigenvalues, the points at which the
graph filter response is defined. While joint statistics for the eigenvalues
typically elude analysis, predictable spectral asymptotics can emerge for large
scale networks. Previously published works successfully analyze large-scale
networks described by undirected graphs and directed graphs with
transpose-symmetric distributions, focusing on consensus acceleration filter
design for time-invariant networks as an application. This work expands upon
these results by enabling analysis of certain large-scale directed networks
described by transpose-asymmetric distributions. Specifically, efficiently
computable spectral density approximations are possible for
transpose-asymmetric percolation network models with node-transitive symmetry
group and normal mean matrix. Numerical simulations support the derived
approximations and application to consensus filters.
| eess.SP | stochastic network influences complicate graph filter design by producing uncertainty in network iteration matrix eigenvalues the points at which the graph filter response is defined while joint statistics for the eigenvalues typically elude analysis predictable spectral asymptotics can emerge for large scale networks previously published works successfully analyze largescale networks described by undirected graphs and directed graphs with transposesymmetric distributions focusing on consensus acceleration filter design for timeinvariant networks as an application this work expands upon these results by enabling analysis of certain largescale directed networks described by transposeasymmetric distributions specifically efficiently computable spectral density approximations are possible for transposeasymmetric percolation network models with nodetransitive symmetry group and normal mean matrix numerical simulations support the derived approximations and application to consensus filters | [['stochastic', 'network', 'influences', 'complicate', 'graph', 'filter', 'design', 'by', 'producing', 'uncertainty', 'in', 'network', 'iteration', 'matrix', 'eigenvalues', 'the', 'points', 'at', 'which', 'the', 'graph', 'filter', 'response', 'is', 'defined', 'while', 'joint', 'statistics', 'for', 'the', 'eigenvalues', 'typically', 'elude', 'analysis', 'predictable', 'spectral', 'asymptotics', 'can', 'emerge', 'for', 'large', 'scale', 'networks', 'previously', 'published', 'works', 'successfully', 'analyze', 'largescale', 'networks', 'described', 'by', 'undirected', 'graphs', 'and', 'directed', 'graphs', 'with', 'transposesymmetric', 'distributions', 'focusing', 'on', 'consensus', 'acceleration', 'filter', 'design', 'for', 'timeinvariant', 'networks', 'as', 'an', 'application', 'this', 'work', 'expands', 'upon', 'these', 'results', 'by', 'enabling', 'analysis', 'of', 'certain', 'largescale', 'directed', 'networks', 'described', 'by', 'transposeasymmetric', 'distributions', 'specifically', 'efficiently', 'computable', 'spectral', 'density', 'approximations', 'are', 'possible', 'for', 'transposeasymmetric', 'percolation', 'network', 'models', 'with', 'nodetransitive', 'symmetry', 'group', 'and', 'normal', 'mean', 'matrix', 'numerical', 'simulations', 'support', 'the', 'derived', 'approximations', 'and', 'application', 'to', 'consensus', 'filters']] | [-0.10651665778063676, 0.05868573825008592, -0.049095433230801414, 0.08438703504649281, -0.08080506341985795, -0.1669030798963044, 0.020897989325663623, 0.43791463762960015, -0.27207035729035484, -0.33290399567169304, 0.1255211049266269, -0.23554662062039114, -0.21816067845255388, 0.1261359402095946, -0.04381666972669734, 0.12732365605237447, 0.12485415831564323, 0.004305783162253494, -0.039415696968946666, -0.2070913553231067, 0.305250603654774, 0.10293412639880788, 0.31633832773287635, -0.011389266117475927, 0.0658789036537231, 0.024545664053817254, -0.07023177285749121, 0.051053679687119706, -0.11384939076770254, 0.10715645907873272, 0.29610162307137156, 0.13619805091381573, 0.27117476516751526, -0.4354150832294166, -0.28039919822124626, 0.13514913365483566, 0.1779526236636795, 0.0805971416724971, 0.017192982805368465, -0.3319775959273346, 0.07050708766748831, -0.15183204365992026, -0.08312736122923739, -0.10229139199417804, -0.0060868557667782324, 0.07831126790515248, -0.2923017808807497, 0.05273951791391215, 0.04675751308883157, 0.06215109626034729, 0.015509772438266385, -0.15512467927823798, 0.0025925937445223832, 0.10911169753922541, -0.03010372843538575, -0.050488477341924645, 0.15696594245245626, -0.10580040784474432, -0.16072471900119156, 0.3030555070526585, -0.025300083824769913, -0.1908689131397762, 0.11753208854846156, -0.06842855798440571, -0.17224891695092207, 0.1309186654584091, 0.22963903577652947, 0.09163946247495272, -0.15497452468306078, 0.06030333029488278, -0.029720346608684407, 0.12889282622456769, 0.04287336948288589, -0.010892541114506977, 0.13192248706776305, 0.18382255491964958, 0.12476595421517346, 0.10672451434226535, -0.02494256881832638, -0.1328844978496581, -0.22356832779536978, -0.02727136792450705, -0.25719981897180166, 0.014800134472971578, -0.1817740481304046, -0.18719252251370364, 0.4217599201477876, 0.1477683872774932, 0.188129656570044, 0.15948317080301805, 0.26534917283051906, 0.1270630487520639, 0.060827243470532054, 0.14472266998114613, 0.15975248880934814, 0.17686041190969845, 0.10867980309417706, -0.14154735175861405, 0.10541902007456838, 0.08142009086539077] |
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