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711.2008 | Analytic vectors in continuous p-adic representations | Given a compact p-adic Lie group G over a finite unramified extension L/Q_p
let G_0 be the product over all Galois conjugates of G. We construct an exact
and faithful functor from admissible G-Banach space representations to
admissible locally L-analytic G_0-representations that coincides with passage
to analytic vectors in case L=Q_p. On the other hand, we study the functor
"passage to analytic vectors" and its derived functors over general basefields.
As an application we determine the higher analytic vectors in certain locally
analytic induced representations.
| math.RT math.NT | given a compact padic lie group g over a finite unramified extension lq_p let g_0 be the product over all galois conjugates of g we construct an exact and faithful functor from admissible gbanach space representations to admissible locally lanalytic g_0representations that coincides with passage to analytic vectors in case lq_p on the other hand we study the functor passage to analytic vectors and its derived functors over general basefields as an application we determine the higher analytic vectors in certain locally analytic induced representations | [['given', 'a', 'compact', 'padic', 'lie', 'group', 'g', 'over', 'a', 'finite', 'unramified', 'extension', 'lq_p', 'let', 'g_0', 'be', 'the', 'product', 'over', 'all', 'galois', 'conjugates', 'of', 'g', 'we', 'construct', 'an', 'exact', 'and', 'faithful', 'functor', 'from', 'admissible', 'gbanach', 'space', 'representations', 'to', 'admissible', 'locally', 'lanalytic', 'g_0representations', 'that', 'coincides', 'with', 'passage', 'to', 'analytic', 'vectors', 'in', 'case', 'lq_p', 'on', 'the', 'other', 'hand', 'we', 'study', 'the', 'functor', 'passage', 'to', 'analytic', 'vectors', 'and', 'its', 'derived', 'functors', 'over', 'general', 'basefields', 'as', 'an', 'application', 'we', 'determine', 'the', 'higher', 'analytic', 'vectors', 'in', 'certain', 'locally', 'analytic', 'induced', 'representations']] | [-0.18451218555749552, 0.05675409056520283, -0.125596269987887, 0.03189434887125816, -0.1676641241931243, -0.05856534683290392, -0.002836824678702325, 0.4047426063930843, -0.3575324455571429, -0.1370567118340149, 0.07952338360851949, -0.21910748344692743, -0.12185273274904253, 0.23041125503936555, -0.12703443015073768, -0.06731190024832513, 0.02191673670384306, 0.20200175793682476, -0.1364715724484995, -0.2509188975729957, 0.3859696297838194, -0.062268033964423146, 0.21165197325881752, -0.031251550890596176, 0.15040850015243562, 0.04649215908266786, -0.014620198970433415, -0.07496179546912417, -0.16644679357217151, 0.13479995423155586, 0.3787118687362569, 0.05323531413337261, 0.1902795152273029, -0.3785492767261841, -0.13162539401318787, 0.2643364810543816, 0.12551320903003216, -0.0005574298244560273, 0.014099561355201663, -0.3310703074576606, 0.13356853142471575, -0.2412923182582301, -0.11359385172722906, -0.07645869196006437, 0.1155675657593259, -0.02990105418522456, -0.2788991672100454, -0.041335582656490545, 0.037842636462301016, 0.1277757838663713, -0.15598849416284527, -0.08559998294491912, -0.06450126356467968, 0.09507266517796713, -0.03938877096445095, 0.12134638081997542, 0.1298761040983131, -0.061726975095708195, -0.10292136597038223, 0.35552210214252516, -0.1465113509628104, -0.2160636602514764, 0.14857519396137808, -0.1998778670208483, -0.1158521512591439, 0.12509930067945543, 0.08283219758205389, 0.17801583732092163, 0.008632816294798763, 0.21210764107584, -0.151788606047176, 0.01680090383728739, 0.09640551929748277, -0.021351332908990314, 0.11466378166919529, 0.005352839424343008, 0.0923176781422027, 0.13200112666136857, 0.08132305804628698, -0.00989003279019238, -0.388614709920636, -0.14958262211137746, -0.11667223581504758, 0.1255445712211928, -0.1291605813266204, -0.1758961532514815, 0.40574404024291877, 0.10660809289845752, 0.20237817835607907, 0.18240941097823585, 0.22934391792500164, 0.1117255952757238, 0.050213886135280494, 0.09156121346508948, 0.04678584494423575, 0.2635523081620837, -0.16386336547453184, -0.11151789229578997, -0.040150333769483175, 0.19578299772494087] |
711.2009 | Fermi momentum resolved charge order for spin disordered stripes | For a doped antiferromagnet with short-range spin stripe correlations and
long-range charge stripe order we find that the manifestation of charge order
changes abruptly as a function of momentum along the Fermi surface. The
disorder averaged local density of states is almost perfectly homogeneous when
integrated only over states which contribute to the ``nodal'' spectral weight
whereas it displays long range charge stripe order when integrated only over
states which contribute to the ``antinodal'' spectral weight. An effectively
two dimensional nodal liquid can thus coexist with static charge stripes
provided there is no static spin order. We also study commensurate spin and
charge stripe ordered systems where the Fermi surface consists of a nodal hole
pocket and an open ``stripe band'' section. Due to the stripe order the
relation between hole density and size of a pocket will be reduced compared to
a paramagnet by a factor of two for even charge period and four for odd charge
period and we find an estimated upper limit on the area fraction of a hole
pocket of 1.6% for charge period four and 4% for charge period five. We also
discuss why electron pockets are not expected for a stripe ordered system and
show that the open Fermi surface section may be electron like with a negative
Hall coefficient.
| cond-mat.str-el cond-mat.supr-con | for a doped antiferromagnet with shortrange spin stripe correlations and longrange charge stripe order we find that the manifestation of charge order changes abruptly as a function of momentum along the fermi surface the disorder averaged local density of states is almost perfectly homogeneous when integrated only over states which contribute to the nodal spectral weight whereas it displays long range charge stripe order when integrated only over states which contribute to the antinodal spectral weight an effectively two dimensional nodal liquid can thus coexist with static charge stripes provided there is no static spin order we also study commensurate spin and charge stripe ordered systems where the fermi surface consists of a nodal hole pocket and an open stripe band section due to the stripe order the relation between hole density and size of a pocket will be reduced compared to a paramagnet by a factor of two for even charge period and four for odd charge period and we find an estimated upper limit on the area fraction of a hole pocket of 16 for charge period four and 4 for charge period five we also discuss why electron pockets are not expected for a stripe ordered system and show that the open fermi surface section may be electron like with a negative hall coefficient | [['for', 'a', 'doped', 'antiferromagnet', 'with', 'shortrange', 'spin', 'stripe', 'correlations', 'and', 'longrange', 'charge', 'stripe', 'order', 'we', 'find', 'that', 'the', 'manifestation', 'of', 'charge', 'order', 'changes', 'abruptly', 'as', 'a', 'function', 'of', 'momentum', 'along', 'the', 'fermi', 'surface', 'the', 'disorder', 'averaged', 'local', 'density', 'of', 'states', 'is', 'almost', 'perfectly', 'homogeneous', 'when', 'integrated', 'only', 'over', 'states', 'which', 'contribute', 'to', 'the', 'nodal', 'spectral', 'weight', 'whereas', 'it', 'displays', 'long', 'range', 'charge', 'stripe', 'order', 'when', 'integrated', 'only', 'over', 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711.201 | A Polynomial Time Algorithm for Graph Isomorphism | We claimed that there is a polynomial algorithm to test if two graphs are
isomorphic. But the algorithm is wrong. It only tests if the adjacency matrices
of two graphs have the same eigenvalues. There is a counterexample of two
non-isomorphic graphs with the same eigenvalues.
| cs.CC | we claimed that there is a polynomial algorithm to test if two graphs are isomorphic but the algorithm is wrong it only tests if the adjacency matrices of two graphs have the same eigenvalues there is a counterexample of two nonisomorphic graphs with the same eigenvalues | [['we', 'claimed', 'that', 'there', 'is', 'a', 'polynomial', 'algorithm', 'to', 'test', 'if', 'two', 'graphs', 'are', 'isomorphic', 'but', 'the', 'algorithm', 'is', 'wrong', 'it', 'only', 'tests', 'if', 'the', 'adjacency', 'matrices', 'of', 'two', 'graphs', 'have', 'the', 'same', 'eigenvalues', 'there', 'is', 'a', 'counterexample', 'of', 'two', 'nonisomorphic', 'graphs', 'with', 'the', 'same', 'eigenvalues']] | [-0.15905473447587018, 0.10202131775693725, -0.08929318930629802, 0.10516837109057435, -0.08665463725185912, -0.22856622855381473, -0.031401441847581577, 0.4428003665221774, -0.23723299218260724, -0.27523059005160694, 0.11959794085756269, -0.3431917296965485, -0.202976799003132, 0.1447079972181793, -0.06523097709388188, 0.03706821404478472, 0.1753055835750116, 0.14518025833303513, -0.01874652178451905, -0.34992025756155665, 0.30857589217307774, -0.04209487366935481, 0.190865595895878, 0.08854056367367182, 0.11599244339310605, -0.10575557268305641, 0.02897721998717474, 0.04496621506531601, -0.08453964947741201, 0.03461604753671133, 0.2628255461383125, 0.19080471328419188, 0.26520667460230785, -0.3419188700373406, -0.06637065363642962, 0.33611379377543926, 0.1259575098975683, 0.07843793367805041, -0.004264117380523164, -0.20766706428612056, 0.1574661945114317, -0.10474146934955017, -0.04769149617008541, -0.016103847974749362, 0.07126612289120322, -0.026355662059200848, -0.2751411206048468, 0.006409699471829378, 0.11955496397517297, 0.03987297494693295, 0.04132032209663126, -0.1315855514055685, -0.016494229162597785, 0.10568962982126875, 0.024696245085974428, -0.04656365910625976, 0.0115130588149085, -0.00940841786644381, -0.19308087767263793, 0.38189261398561625, 0.04119122897289977, -0.24325058256964321, 0.14580793842754286, -0.16446063815332626, -0.2121986493407546, 0.12515253096859416, 0.038655053520494184, 0.12639725750879102, -0.08241986694907688, 0.13075677202204647, -0.17658168328521046, 0.15529197474698658, 0.1345780917301612, -0.06356549699304868, 0.10627918265274038, 0.05864988125698722, 0.13975488445620335, 0.11323802407992922, 0.07339010743991188, -0.017172329411234543, -0.27598953975931456, -0.09869770306850904, -0.30893847351620457, 0.045725843362996114, -0.1870213410736102, -0.23390901064419228, 0.43406852966417436, 0.13934335474977674, 0.18421652253069307, 0.09823998580079364, 0.25763934824372764, 0.0822312125288274, 0.09418733126443365, 0.1906000502589766, 0.21207830909153688, 0.2180331411730984, -0.037736645818728466, -0.10037536070803585, 0.08712442099805111, 0.14312417092530624] |
711.2011 | Arrival time in quantum field theory | Via the proper-time eigenstates (event states) instead of the proper-mass
eigenstates (particle states), free-motion time-of-arrival theory for massive
spin-1/2 particles is developed at the level of quantum field theory. The
approach is based on a position-momentum dual formalism. Within the framework
of field quantization, the total time-of-arrival is the sum of the single
event-of-arrival contributions, and contains zero-point quantum fluctuations
because the clocks under consideration follow the laws of quantum mechanics.
| quant-ph | via the propertime eigenstates event states instead of the propermass eigenstates particle states freemotion timeofarrival theory for massive spin12 particles is developed at the level of quantum field theory the approach is based on a positionmomentum dual formalism within the framework of field quantization the total timeofarrival is the sum of the single eventofarrival contributions and contains zeropoint quantum fluctuations because the clocks under consideration follow the laws of quantum mechanics | [['via', 'the', 'propertime', 'eigenstates', 'event', 'states', 'instead', 'of', 'the', 'propermass', 'eigenstates', 'particle', 'states', 'freemotion', 'timeofarrival', 'theory', 'for', 'massive', 'spin12', 'particles', 'is', 'developed', 'at', 'the', 'level', 'of', 'quantum', 'field', 'theory', 'the', 'approach', 'is', 'based', 'on', 'a', 'positionmomentum', 'dual', 'formalism', 'within', 'the', 'framework', 'of', 'field', 'quantization', 'the', 'total', 'timeofarrival', 'is', 'the', 'sum', 'of', 'the', 'single', 'eventofarrival', 'contributions', 'and', 'contains', 'zeropoint', 'quantum', 'fluctuations', 'because', 'the', 'clocks', 'under', 'consideration', 'follow', 'the', 'laws', 'of', 'quantum', 'mechanics']] | [-0.13447020339874038, 0.2609633890451337, -0.14089628369075016, 0.07049581386061196, 0.02091452370033316, -0.11332343015954763, 0.026113407419778516, 0.246635392713158, -0.2128597870334119, -0.2657632177553909, -0.034469497754521995, -0.3108471524121368, -0.0957444675968609, 0.1359099010494875, -0.019118771311300603, 0.06970403819560897, 0.06329720835808826, 0.10386255645341631, -0.06443375384812985, -0.17270700221854277, 0.31209260204375006, 0.08474200579466001, 0.3406476252374874, 0.01996633845998946, 0.1602276457959543, 0.10629636155900316, 0.017822234493180895, -0.007488322228301263, -0.09300805282765541, 0.10198531073578836, 0.17574316383663402, 0.10161956957797857, 0.23095856836416584, -0.43310864810980315, -0.20157360467398405, 0.04731047961968875, 0.10773137293627782, 0.15893240309568404, -0.0017045851260342677, -0.3244791839987148, 0.00359713200452751, -0.17382867385943732, -0.12178134713051976, -0.036326838333321655, -0.003904581201546218, -0.05599575503256874, -0.20598714590828487, 0.14790236203512852, 0.0097078756476496, 0.03936397864658763, -0.049044472135036536, -0.06108462866530686, 0.039245100982109274, 0.09160094359970611, 0.00125365715433398, -0.014344078565836358, 0.1943049311124976, -0.10605007712012224, -0.17676161942274674, 0.414012918356752, -0.031828310723632465, -0.23633198049999232, 0.09050601367514742, -0.1397877971817186, -0.12164527617826842, 0.09974235047896703, 0.115057478026163, 0.13453958127554844, -0.1795360559894555, 0.1636288342044176, 0.01239968836982397, 0.15654397035098594, 0.005560283545755606, 0.1243503606216847, 0.28417071311370184, 0.060477110476273556, 0.03593608562875053, 0.10335656381684585, -0.11099629246872729, -0.2606555599098404, -0.3702776008218095, -0.15943799811324477, -0.23493878143178165, 0.0873823804659364, -0.05971460059210085, -0.16674776292959417, 0.40377911007490713, 0.11860895654915468, 0.10070753879710168, 0.025860799348278753, 0.2797224990672607, 0.21005391938935802, 0.06103724398501757, 0.028202330308925848, 0.2698957765225213, 0.24853350703462795, 0.0477334759603052, -0.25937300809132663, -0.038303921599804926, 0.11464789652845998] |
711.2012 | A lower bound on the probability of error in quantum state
discrimination | We give a lower bound on the probability of error in quantum state
discrimination. The bound is a weighted sum of the pairwise fidelities of the
states to be distinguished.
| quant-ph | we give a lower bound on the probability of error in quantum state discrimination the bound is a weighted sum of the pairwise fidelities of the states to be distinguished | [['we', 'give', 'a', 'lower', 'bound', 'on', 'the', 'probability', 'of', 'error', 'in', 'quantum', 'state', 'discrimination', 'the', 'bound', 'is', 'a', 'weighted', 'sum', 'of', 'the', 'pairwise', 'fidelities', 'of', 'the', 'states', 'to', 'be', 'distinguished']] | [-0.15170135057220857, 0.18490421030049523, -0.120776758218805, 0.0944446751421007, 0.06053783980508645, -0.13935795354967315, 0.1658490472395594, 0.30716086477041243, -0.2159825747211774, -0.2953095382389923, 0.04370738366851583, -0.2917131923139095, -0.05234274373700221, 0.20030776436130207, -0.08577810289959113, 0.07425039485096932, 0.08258479249974092, 0.17425750084221364, -0.11875850322345892, -0.3150894004230698, 0.28472874164581297, 0.034028180001769215, 0.28483704179525376, 0.11856462070718407, 0.07322743541250626, -0.036929200092951454, 0.088595845301946, -0.032357939146459104, -0.1632779991409431, 0.1947676705099487, 0.2455934361865123, 0.19876701538451017, 0.23246360160410404, -0.3547199316322803, -0.13519487457039456, 0.18666964108124376, 0.09244382820713024, 0.13779592905193566, 0.0260017856140621, -0.3437992688268423, 0.0562807656203707, -0.1671215600023667, -0.03463047208885352, -0.03940244140879561, -0.036873332038521764, -0.006971380362908046, -0.309595295569549, 0.1283136233066519, 0.09015771253810574, -0.014542657850931088, -0.033092714838373165, -0.15399270895092437, 0.04447700182596843, 0.13094327005868156, -0.07349678014870734, 0.02145150365928809, 0.06248568279358248, -0.16319840755313636, -0.19792578568061192, 0.279926829226315, -0.07256793156266213, -0.25703563081721464, 0.09819827374691764, -0.11616930766031146, -0.04645972419530153, 0.1138217119500041, 0.18491488099098205, 0.12199728849033514, -0.07138605578705513, 0.024396543825666108, -0.064406042235593, 0.14708325769752265, 0.05264383942509691, 0.16727081115047138, 0.15674549707521995, 0.11149176244313518, 0.19876714481894547, 0.19136477410405253, -0.09266547662361214, -0.10896039493381977, -0.3319455809891224, -0.21135119794635102, -0.2816287913049261, 0.10566383926197886, -0.08222756038109462, -0.17774086277931928, 0.4191183087726434, 0.02737636926273505, 0.24732020495769877, 0.1163470086020728, 0.2660325155903896, 0.2167659895805021, -0.04330776218945782, 0.0797536582686007, 0.2821167642949149, 0.1699175670122107, -0.13634864338673652, -0.2157413086698701, 0.11057138832596441, 0.11472952573870619] |
711.2013 | A Conformally Invariant Approach to Estimation of Relations Between
Physical Quantities | A.V.Pushkin's approach based on conformal geometrodynamics (CGD) to
calculation of quantitative relations between physical quantities is presented
and analyzed. In the simplest cases of the stationary solutions to the CGD
equations the approach implies separation of internal and external parts
(relative to a certain boundary) from the solutions and using inverse
transformations transforming the parts into each other. For the
quasi-stationary (metastable) states, the possibility of the nonperturbative
calculation of their lifetimes is shown. The approach is illustrated by several
examples. In particular, it is shown that the Dirac ``large number hypothesis''
is a consequence of the approach. Also, the evaluated radiation lifetime of the
first excited level of 2p hydrogen atom and neutron lifetime are presented.
| gr-qc | avpushkins approach based on conformal geometrodynamics cgd to calculation of quantitative relations between physical quantities is presented and analyzed in the simplest cases of the stationary solutions to the cgd equations the approach implies separation of internal and external parts relative to a certain boundary from the solutions and using inverse transformations transforming the parts into each other for the quasistationary metastable states the possibility of the nonperturbative calculation of their lifetimes is shown the approach is illustrated by several examples in particular it is shown that the dirac large number hypothesis is a consequence of the approach also the evaluated radiation lifetime of the first excited level of 2p hydrogen atom and neutron lifetime are presented | [['avpushkins', 'approach', 'based', 'on', 'conformal', 'geometrodynamics', 'cgd', 'to', 'calculation', 'of', 'quantitative', 'relations', 'between', 'physical', 'quantities', 'is', 'presented', 'and', 'analyzed', 'in', 'the', 'simplest', 'cases', 'of', 'the', 'stationary', 'solutions', 'to', 'the', 'cgd', 'equations', 'the', 'approach', 'implies', 'separation', 'of', 'internal', 'and', 'external', 'parts', 'relative', 'to', 'a', 'certain', 'boundary', 'from', 'the', 'solutions', 'and', 'using', 'inverse', 'transformations', 'transforming', 'the', 'parts', 'into', 'each', 'other', 'for', 'the', 'quasistationary', 'metastable', 'states', 'the', 'possibility', 'of', 'the', 'nonperturbative', 'calculation', 'of', 'their', 'lifetimes', 'is', 'shown', 'the', 'approach', 'is', 'illustrated', 'by', 'several', 'examples', 'in', 'particular', 'it', 'is', 'shown', 'that', 'the', 'dirac', 'large', 'number', 'hypothesis', 'is', 'a', 'consequence', 'of', 'the', 'approach', 'also', 'the', 'evaluated', 'radiation', 'lifetime', 'of', 'the', 'first', 'excited', 'level', 'of', '2p', 'hydrogen', 'atom', 'and', 'neutron', 'lifetime', 'are', 'presented']] | [-0.10166846362448394, 0.1274763565382053, -0.08468124907110529, 0.07826840916170803, -0.011498262110198366, -0.08957550657013881, 0.03653251963410655, 0.3219719297605856, -0.24868352512491804, -0.29345512833317805, 0.06081115503209354, -0.2707411724239074, -0.12405650641423939, 0.20439408365877923, 0.021692196677984863, 0.07706591540722754, 0.05226270701126035, 0.05201176907224902, -0.07258271194536817, -0.2067796827849916, 0.34633792856515483, 0.021961631124903416, 0.2891037621663819, 0.07291311373661176, 0.09732352934199674, -0.032354347552333414, -0.028158366020792965, 0.003255799484091328, -0.09234278442385528, 0.1150343400232518, 0.20194064097374614, 0.11142685139503587, 0.23395940571910992, -0.4247512722163108, -0.1795671200239228, 0.04839870921368229, 0.12077608326969845, 0.1418512186621605, -0.038516446734288834, -0.3153250718585633, 0.07096735116270982, -0.14602859453940442, -0.15165505553033717, -0.08258991528719921, 0.052844131092444575, -1.4701617303593405e-05, -0.24028655286107597, 0.06042245912525185, 0.03868936459316344, -0.011270624001867716, -0.13309795922471274, -0.11391864637723835, -0.05160422271502943, 0.10502354316573975, 0.09775267106657527, -0.029710534179998672, 0.11896424675520895, -0.11572998587909186, -0.09774997656169379, 0.38884010307233907, -0.039790833031694436, -0.22088380370706576, 0.18623856763588265, -0.13544134631479993, -0.1108919383058774, 0.13614036547469682, 0.10690450253856272, 0.16821716374171705, -0.15026189062487463, 0.08711789902660931, -0.01615161108202301, 0.15024087166991726, 0.06689167679849498, 0.03190060428359771, 0.1772568106635249, 0.15736020011787205, 0.0172829322290109, 0.16435165140538974, -0.07077639106388108, -0.1401455702826156, -0.34824297891464084, -0.1646790957130524, -0.18307531120030787, 0.03892603960562626, -0.07046652836112932, -0.14306206388774345, 0.3995765426059671, 0.1284140391240914, 0.17294796677466867, 0.007236725678827999, 0.30107681684452914, 0.16339269222627426, 0.04032888059536445, 0.0390861857289063, 0.24932636369164263, 0.18696186236499263, 0.042078058129971334, -0.2639737820417363, 0.03973713375082047, 0.08859579884928875] |
711.2014 | AdS-QCD quark-antiquark potential, meson spectrum and tetraquarks | AdS/QCD correspondence predicts the structure of quark-antiquark potential in
the static limit. We use this piece of information together with the Salpeter
equation (Schr\"odinger equation with relativistic kinematics) and a short
range hyperfine splitting potential to determine quark masses and the quark
potential parameters from the meson spectrum. The agreement between theory and
experimental data is satisfactory provided one considers only mesons comprising
at least one heavy quark. We use the same potential (in the one-gluon-exchange
approximation) and these data to estimate constituent diquark masses. Using
these results as an input we compute tetraquark masses using a
diquark-antidiquark model. The masses of the states X(3872) or Y(3940) are
predicted rather accurately. We also compute tetraquark masses with open charm
and strangeness. Our result is that tetraquark candidates such as D_s(2317),
D_s(2457) or X(2632) can hardly be interpreted as diquark-antidiquark states
within the present approach.
| hep-ph | adsqcd correspondence predicts the structure of quarkantiquark potential in the static limit we use this piece of information together with the salpeter equation schrodinger equation with relativistic kinematics and a short range hyperfine splitting potential to determine quark masses and the quark potential parameters from the meson spectrum the agreement between theory and experimental data is satisfactory provided one considers only mesons comprising at least one heavy quark we use the same potential in the onegluonexchange approximation and these data to estimate constituent diquark masses using these results as an input we compute tetraquark masses using a diquarkantidiquark model the masses of the states x3872 or y3940 are predicted rather accurately we also compute tetraquark masses with open charm and strangeness our result is that tetraquark candidates such as d_s2317 d_s2457 or x2632 can hardly be interpreted as diquarkantidiquark states within the present approach | [['adsqcd', 'correspondence', 'predicts', 'the', 'structure', 'of', 'quarkantiquark', 'potential', 'in', 'the', 'static', 'limit', 'we', 'use', 'this', 'piece', 'of', 'information', 'together', 'with', 'the', 'salpeter', 'equation', 'schrodinger', 'equation', 'with', 'relativistic', 'kinematics', 'and', 'a', 'short', 'range', 'hyperfine', 'splitting', 'potential', 'to', 'determine', 'quark', 'masses', 'and', 'the', 'quark', 'potential', 'parameters', 'from', 'the', 'meson', 'spectrum', 'the', 'agreement', 'between', 'theory', 'and', 'experimental', 'data', 'is', 'satisfactory', 'provided', 'one', 'considers', 'only', 'mesons', 'comprising', 'at', 'least', 'one', 'heavy', 'quark', 'we', 'use', 'the', 'same', 'potential', 'in', 'the', 'onegluonexchange', 'approximation', 'and', 'these', 'data', 'to', 'estimate', 'constituent', 'diquark', 'masses', 'using', 'these', 'results', 'as', 'an', 'input', 'we', 'compute', 'tetraquark', 'masses', 'using', 'a', 'diquarkantidiquark', 'model', 'the', 'masses', 'of', 'the', 'states', 'x3872', 'or', 'y3940', 'are', 'predicted', 'rather', 'accurately', 'we', 'also', 'compute', 'tetraquark', 'masses', 'with', 'open', 'charm', 'and', 'strangeness', 'our', 'result', 'is', 'that', 'tetraquark', 'candidates', 'such', 'as', 'd_s2317', 'd_s2457', 'or', 'x2632', 'can', 'hardly', 'be', 'interpreted', 'as', 'diquarkantidiquark', 'states', 'within', 'the', 'present', 'approach']] | [-0.049519488909347376, 0.17369636967312954, -0.08497008301225871, 0.1818137364962112, -0.07455498758624766, -0.1454749099359336, 0.0883857324058649, 0.35694875136594956, -0.16751230600565462, -0.28225315823941166, -0.040569047632128735, -0.31137184430779496, -0.008944470034076005, 0.07810621737981294, 0.07515040167089237, 0.08983563103804916, 0.08988076612569759, 0.04860550125168873, -0.06254492553678984, -0.1890601956910244, 0.3679669340777303, -0.06790009249185383, 0.14610608933414793, 0.16563060947424982, 0.026363203293827533, -0.0035734878062650983, 0.043957408119163564, -0.07340435609287045, -0.08487826439046381, 0.07925471375142158, 0.2019917487964513, 0.09258664200495614, 0.14697460836606283, -0.3649137693516333, -0.1686451231395091, 0.0782791537554069, 0.1821688579454441, 0.17572762246053455, -0.040819011581077855, -0.3306503653408251, 0.11116934183519334, -0.2317583569273038, -0.2157525372245467, -0.13065176579812673, -0.009269252357164949, -0.026163316882727012, -0.32228168415464786, 0.12849350137825447, -0.10345895737934281, -0.001363692739584916, -0.11373160813580936, -0.24069877485023208, -0.06361509670837927, 0.06869825095423615, 0.06613083350927976, 0.11025933598571548, 0.13782638581600828, -0.15693723935548637, -0.1489762032607859, 0.42926954055650973, -0.1042684717202218, -0.20779876641824213, 0.14660747990694264, -0.11921968905281433, -0.1087219784770843, 0.042697370232699414, 0.15377122858329348, 0.07484670388381141, -0.19843585193067015, 0.055029215220227495, -0.0851650129360947, 0.20020905356037652, 0.0834980142601228, 0.08517049272944552, 0.26627080023541233, 0.188158211288449, -0.07647024354779385, 0.056218551564469775, -0.042579465345676304, -0.11528841323796397, -0.3521697143433799, -0.08572541088075705, -0.15591533365987345, 0.06354913767427206, -0.08200611041243512, -0.11772772060497336, 0.3904832282405294, 0.09224647291752339, 0.24581720011676073, 0.01954862451784208, 0.31180219192543185, 0.09757466582929007, 0.07355240429423644, 0.1258253502974313, 0.27565231199809154, 0.22083880345035398, 0.1135030839179026, -0.25698986915300903, -0.023392324699875965, 0.0521565047223908] |
711.2015 | Observable Consequences of Planet Formation Models in Systems with
Close-in Terrestrial Planets | To date, two planetary systems have been discovered with close-in,
terrestrial-mass planets (< 5-10 Earth masses). Many more such discoveries are
anticipated in the coming years with radial velocity and transit searches. Here
we investigate the different mechanisms that could form "hot Earths" and their
observable predictions. Models include: 1) in situ accretion; 2) formation at
larger orbital distance followed by inward "type 1" migration; 3) formation
from material being "shepherded" inward by a migrating gas giant planet; 4)
formation from material being shepherded by moving secular resonances during
dispersal of the protoplanetary disk; 5) tidal circularization of eccentric
terrestrial planets with close-in perihelion distances; and 6)
photo-evaporative mass loss of a close-in giant planet. Models 1-4 have been
validated in previous work. We show that tidal circularization can form hot
Earths, but only for relatively massive planets (> 5 Earth masses) with very
close-in perihelion distances (< 0.025 AU), and even then the net inward
movement in orbital distance is at most only 0.1-0.15 AU. For planets of less
than about 70 Earth masses, photo-evaporation can remove the planet's envelope
and leave behind the solid core on a Gyr timescale, but only for planets inside
0.025-0.05 AU. Using two quantities that are observable by current and upcoming
missions, we show that these models each produce unique signatures, and can be
observationally distinguished. These observables are the planetary system
architecture (detectable with radial velocities, transits and transit-timing)
and the bulk composition of transiting close-in terrestrial planets (measured
by transits via the planet's radius).
| astro-ph | to date two planetary systems have been discovered with closein terrestrialmass planets 510 earth masses many more such discoveries are anticipated in the coming years with radial velocity and transit searches here we investigate the different mechanisms that could form hot earths and their observable predictions models include 1 in situ accretion 2 formation at larger orbital distance followed by inward type 1 migration 3 formation from material being shepherded inward by a migrating gas giant planet 4 formation from material being shepherded by moving secular resonances during dispersal of the protoplanetary disk 5 tidal circularization of eccentric terrestrial planets with closein perihelion distances and 6 photoevaporative mass loss of a closein giant planet models 14 have been validated in previous work we show that tidal circularization can form hot earths but only for relatively massive planets 5 earth masses with very closein perihelion distances 0025 au and even then the net inward movement in orbital distance is at most only 01015 au for planets of less than about 70 earth masses photoevaporation can remove the planets envelope and leave behind the solid core on a gyr timescale but only for planets inside 0025005 au using two quantities that are observable by current and upcoming missions we show that these models each produce unique signatures and can be observationally distinguished these observables are the planetary system architecture detectable with radial velocities transits and transittiming and the bulk composition of transiting closein terrestrial planets measured by transits via the planets radius | [['to', 'date', 'two', 'planetary', 'systems', 'have', 'been', 'discovered', 'with', 'closein', 'terrestrialmass', 'planets', '510', 'earth', 'masses', 'many', 'more', 'such', 'discoveries', 'are', 'anticipated', 'in', 'the', 'coming', 'years', 'with', 'radial', 'velocity', 'and', 'transit', 'searches', 'here', 'we', 'investigate', 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711.2016 | The Tip of the Red Giant Branch | I review the latest results on the calibration of the Tip of the Red Giant
Branch as a standard candle, in the optical and in the near infrared. The
agreement among different and independent empirical calibrations is rather
good, if all the uncertainties are taken into account. The possible extension
of the calibration to SDSS photometric bands (i,z) is also discussed.
| astro-ph | i review the latest results on the calibration of the tip of the red giant branch as a standard candle in the optical and in the near infrared the agreement among different and independent empirical calibrations is rather good if all the uncertainties are taken into account the possible extension of the calibration to sdss photometric bands iz is also discussed | [['i', 'review', 'the', 'latest', 'results', 'on', 'the', 'calibration', 'of', 'the', 'tip', 'of', 'the', 'red', 'giant', 'branch', 'as', 'a', 'standard', 'candle', 'in', 'the', 'optical', 'and', 'in', 'the', 'near', 'infrared', 'the', 'agreement', 'among', 'different', 'and', 'independent', 'empirical', 'calibrations', 'is', 'rather', 'good', 'if', 'all', 'the', 'uncertainties', 'are', 'taken', 'into', 'account', 'the', 'possible', 'extension', 'of', 'the', 'calibration', 'to', 'sdss', 'photometric', 'bands', 'iz', 'is', 'also', 'discussed']] | [-0.020943359884082295, 0.053437914334802473, -0.09867619399408825, 0.1042805504641633, -0.07956397884571162, -0.07139092566995103, 0.08004554751955095, 0.4170435068548703, -0.17144746599302887, -0.3065070619379155, 0.1082640005023692, -0.3306509765536814, -0.05355121393794896, 0.23483626108204367, -0.10346150953517311, -0.02912109936053147, 0.088352977412707, -0.05362293186796005, -0.04216851263600936, -0.2464002519349766, 0.2644762666590634, 0.03401366841109073, 0.28552118192625336, -0.021609043977299673, 0.03443525223153048, -0.0017432494653907957, -0.13811452537164337, 0.015362608227420782, -0.1794093584901363, 0.06159442828082647, 0.19476997620258174, 0.07760042725138072, 0.197696358803278, -0.35213890938912745, -0.13162727924025633, 0.08393696891372932, 0.16562148811845262, 0.06895398295133329, -0.018654250839465588, -0.24560917046715003, 0.0431016150587162, -0.11287300041342369, -0.15848613060155853, 0.028809883538251896, 0.029804372068372418, 0.0653543499619013, -0.23355999233040836, 0.04932436499254183, 0.004806299770220381, 0.09774145661074607, -0.0975792277222652, -0.21253446941492987, -0.08209476097807532, 0.1497372941755247, 0.03885349291605783, 0.046176627568412024, 0.09058829728651364, -0.12385694684124872, -0.0018332950221221955, 0.40234984341459196, -0.09690473019145429, -0.04378432021705342, 0.17376419999560372, -0.13578138912676788, -0.12366461389713355, 0.06252910845653444, 0.0906428012264068, 0.04413182899111607, -0.20965530668370058, 0.0614503252560456, 0.011479032821342593, 0.135201266203381, 0.01043098032871475, 0.09641670582891866, 0.24982570059841774, 0.17109959016813606, -0.01017375001836507, 0.06336860281232072, -0.20764583066395928, -0.05310211386474338, -0.4047999080331599, -0.07712200943563806, -0.15478588181326441, -0.0006791372920890323, -0.14138201366085176, -0.1410092411898687, 0.3922649841816699, 0.15533873202187604, 0.20871374345018115, 0.008347409823146022, 0.37571574570458444, 0.08318539821642039, 0.10765104053816835, 0.0085770152051185, 0.38120860777428894, 0.12891271778718247, 0.06136247092002972, -0.23413106740345477, 0.029473315504547515, 0.0033232795005877975] |
711.2017 | A 1.3 cm wavelength radio flare from a deeply embedded source in the
Orion BN/KL region | Aims: Our aim was to measure and characterize the short-wavelength radio
emission from young stellar objects (YSOs) in the Orion Nebula Cluster and the
BN/KL star-forming region. Methods: We used the NRAO Very Large Array at a
wavelength of 1.3 cm and we studied archival X-ray, infrared, and radio data.
Results: During our observation, a strong outburst (flux increasing >10 fold)
occurred in one of the 16 sources detected at a wavelength of 1.3cm, while the
others remained (nearly) constant. This source does not have an infrared
counterpart, but has subsequently been observed to flare in X-rays. Curiously,
a very weak variable double radio source was found at other epochs near this
position, one of whose components is coincident with it. A very high extinction
derived from modeling the X-ray emission and the absence of an infrared
counterpart both suggest that this source is very deeply embedded.
| astro-ph | aims our aim was to measure and characterize the shortwavelength radio emission from young stellar objects ysos in the orion nebula cluster and the bnkl starforming region methods we used the nrao very large array at a wavelength of 13 cm and we studied archival xray infrared and radio data results during our observation a strong outburst flux increasing 10 fold occurred in one of the 16 sources detected at a wavelength of 13cm while the others remained nearly constant this source does not have an infrared counterpart but has subsequently been observed to flare in xrays curiously a very weak variable double radio source was found at other epochs near this position one of whose components is coincident with it a very high extinction derived from modeling the xray emission and the absence of an infrared counterpart both suggest that this source is very deeply embedded | [['aims', 'our', 'aim', 'was', 'to', 'measure', 'and', 'characterize', 'the', 'shortwavelength', 'radio', 'emission', 'from', 'young', 'stellar', 'objects', 'ysos', 'in', 'the', 'orion', 'nebula', 'cluster', 'and', 'the', 'bnkl', 'starforming', 'region', 'methods', 'we', 'used', 'the', 'nrao', 'very', 'large', 'array', 'at', 'a', 'wavelength', 'of', '13', 'cm', 'and', 'we', 'studied', 'archival', 'xray', 'infrared', 'and', 'radio', 'data', 'results', 'during', 'our', 'observation', 'a', 'strong', 'outburst', 'flux', 'increasing', '10', 'fold', 'occurred', 'in', 'one', 'of', 'the', '16', 'sources', 'detected', 'at', 'a', 'wavelength', 'of', '13cm', 'while', 'the', 'others', 'remained', 'nearly', 'constant', 'this', 'source', 'does', 'not', 'have', 'an', 'infrared', 'counterpart', 'but', 'has', 'subsequently', 'been', 'observed', 'to', 'flare', 'in', 'xrays', 'curiously', 'a', 'very', 'weak', 'variable', 'double', 'radio', 'source', 'was', 'found', 'at', 'other', 'epochs', 'near', 'this', 'position', 'one', 'of', 'whose', 'components', 'is', 'coincident', 'with', 'it', 'a', 'very', 'high', 'extinction', 'derived', 'from', 'modeling', 'the', 'xray', 'emission', 'and', 'the', 'absence', 'of', 'an', 'infrared', 'counterpart', 'both', 'suggest', 'that', 'this', 'source', 'is', 'very', 'deeply', 'embedded']] | [-0.07469148055624952, 0.08012871899769552, -0.08004958812007998, 0.08467947397314544, -0.08402906239767667, -0.09601977863824185, 0.049750564845601974, 0.49962936625594184, -0.17855559069929378, -0.32195391481881647, 0.11276116641634303, -0.2903925850227171, -0.04535499750002965, 0.19520099646551217, -0.03551756861943555, -0.03594130621336046, 0.0655565435323408, -0.06772521311151129, 0.008771891795973085, -0.20106343796863188, 0.2553498864713993, 0.12725175859495289, 0.21949877806299298, 0.0172296083931412, 0.09189314914464976, -0.10567035091103238, -0.10023166619868455, -0.03243812993105476, -0.06251843032755985, 0.06165524232232956, 0.26851671445341846, 0.08972155425117864, 0.199211996637101, -0.342988267523509, -0.23094700687393852, 0.057886241989045524, 0.16354441342457215, 0.019569883241831343, -0.01925708238212835, -0.26755578066444113, 0.06338975113637581, -0.14749702467221995, -0.206537569429548, 0.12256963455377995, 0.06631546450436723, -0.008740335475213091, -0.17816642985432124, 0.057151876651320835, -0.01124782650731504, 0.08689346412184085, -0.13119889484864158, -0.0842650129972976, -0.003551121310134526, 0.10563593853556481, 0.019530514296346984, 0.11842782776422646, 0.1299390652134609, -0.15823935750289028, -0.07534394996101354, 0.3469643004311464, -0.06873942082937883, 0.033320207006240984, 0.2771219641309181, -0.24526228438936123, -0.22743784965072966, 0.2521426649985924, 0.0962968423937251, 0.12966536258531064, -0.18030824974736795, 0.019505122142327556, -0.018477478541741085, 0.2658911997160944, 0.08484745591714167, 0.09003198312018953, 0.296367389067602, 0.0885825427850949, 0.022988988063961418, 0.18295472948598124, -0.3025893433539032, -0.00628974300105961, -0.23896641245580652, -0.04445031256340507, -0.1681548344449704, 0.0951022851443414, -0.06980516827064583, -0.13478511054865497, 0.3373612540419258, 0.05561860838784602, 0.18172418418638156, 0.02344592293640472, 0.28498273109700406, 0.08640626856746773, 0.12788801524252788, 0.1409998397741999, 0.34803251270838337, 0.1341299772481149, 0.17555584262606694, -0.18991371382465017, 0.048961991308016234, -0.043454463150174844] |
711.2018 | Sterile neutrinos after the first MiniBooNE results | In view of the recent results from the MiniBooNE experiment we revisit the
global neutrino oscillation fit to short-baseline neutrino data by adding one,
two or three sterile neutrinos with eV-scale masses to the three Standard Model
neutrinos. We find that four-neutrino oscillations of the (3+1) type, which
have been only marginally allowed before the recent MiniBooNE results, become
even more disfavored with the new data. In the framework of so-called (3+2)
five-neutrino mass schemes the MiniBooNE results can be nicely reconciled with
the LSND appearance evidence thanks to the possibility of CP violation
available in such oscillation schemes; however, the tension between appearance
and disappearance experiments represents a serious problem in (3+2) schemes, so
that these models are ultimately not viable. This tension remains also when a
third sterile neutrino is added, and we do not find a significant improvement
of the global fit in a (3+3) scheme.
| hep-ph | in view of the recent results from the miniboone experiment we revisit the global neutrino oscillation fit to shortbaseline neutrino data by adding one two or three sterile neutrinos with evscale masses to the three standard model neutrinos we find that fourneutrino oscillations of the 31 type which have been only marginally allowed before the recent miniboone results become even more disfavored with the new data in the framework of socalled 32 fiveneutrino mass schemes the miniboone results can be nicely reconciled with the lsnd appearance evidence thanks to the possibility of cp violation available in such oscillation schemes however the tension between appearance and disappearance experiments represents a serious problem in 32 schemes so that these models are ultimately not viable this tension remains also when a third sterile neutrino is added and we do not find a significant improvement of the global fit in a 33 scheme | [['in', 'view', 'of', 'the', 'recent', 'results', 'from', 'the', 'miniboone', 'experiment', 'we', 'revisit', 'the', 'global', 'neutrino', 'oscillation', 'fit', 'to', 'shortbaseline', 'neutrino', 'data', 'by', 'adding', 'one', 'two', 'or', 'three', 'sterile', 'neutrinos', 'with', 'evscale', 'masses', 'to', 'the', 'three', 'standard', 'model', 'neutrinos', 'we', 'find', 'that', 'fourneutrino', 'oscillations', 'of', 'the', '31', 'type', 'which', 'have', 'been', 'only', 'marginally', 'allowed', 'before', 'the', 'recent', 'miniboone', 'results', 'become', 'even', 'more', 'disfavored', 'with', 'the', 'new', 'data', 'in', 'the', 'framework', 'of', 'socalled', '32', 'fiveneutrino', 'mass', 'schemes', 'the', 'miniboone', 'results', 'can', 'be', 'nicely', 'reconciled', 'with', 'the', 'lsnd', 'appearance', 'evidence', 'thanks', 'to', 'the', 'possibility', 'of', 'cp', 'violation', 'available', 'in', 'such', 'oscillation', 'schemes', 'however', 'the', 'tension', 'between', 'appearance', 'and', 'disappearance', 'experiments', 'represents', 'a', 'serious', 'problem', 'in', '32', 'schemes', 'so', 'that', 'these', 'models', 'are', 'ultimately', 'not', 'viable', 'this', 'tension', 'remains', 'also', 'when', 'a', 'third', 'sterile', 'neutrino', 'is', 'added', 'and', 'we', 'do', 'not', 'find', 'a', 'significant', 'improvement', 'of', 'the', 'global', 'fit', 'in', 'a', '33', 'scheme']] | [-0.07570645867806003, 0.17887144086951692, -0.031454842290314276, 0.15788694517686963, -0.07994079674166199, -0.17403688977375734, 0.09817137444593213, 0.3092627847831495, -0.19484037620871253, -0.35640409905966874, 0.08167222470306237, -0.31744625531703335, -0.08500771577677664, 0.20107280165098632, -0.02050391020492424, 0.03874135870687865, 0.10063528763193234, -0.019114254344556783, -0.08523858011844945, -0.2617002304209195, 0.28111767703415574, 0.08139871661173734, 0.2743495500935997, 0.07376541405431675, 0.03820312367138654, -0.1017562852302453, -0.0936416409330795, -0.009806333978131816, -0.08035405604558135, 0.04567393194176131, 0.19845686157382383, 0.13784223640785156, 0.15254530239523062, -0.43026222403136055, -0.21969100725962906, 0.19773965934920754, 0.16024313430849313, 0.131264079628808, -0.08253749519025332, -0.30700969909997405, 0.0364622516939857, -0.21099531287138626, -0.1364195192566242, -0.06068453772899669, -0.0700458157618807, -0.07098371927969384, -0.2834776627151351, 0.12699398746681745, 6.749265437089914e-05, -0.017968825007965032, -0.07490709479080161, -0.1610889350554931, 0.024411013255499908, 0.04561316756302698, 0.1554766881155366, -0.006684908294118941, 0.036963964285442255, -0.1148820826579263, -0.1423404282147719, 0.3856616520599739, -0.09588166461263255, -0.15757695827758997, 0.15105485382357714, -0.18320170563104488, -0.16269330691697226, 0.1374106414685328, 0.09676128611868448, 0.008118960334655098, -0.18061838297669325, 0.05541635999327047, -0.12008105935780583, 0.1931780054536019, 0.07107677444268169, -0.012927681059777938, 0.2770344555044446, 0.22678224551900467, 0.09707597085130024, -0.060852329529085626, -0.1575133364963836, -0.03482635318918305, -0.34870496585436567, -0.053903214205559845, -0.057501617120578885, 0.031127219009913214, -0.03272233398633575, -0.0785222634912242, 0.38254670405412244, 0.14935287949943765, 0.2425456866307335, -0.013585974810789717, 0.30516373778290645, 0.017716584261506796, 0.0910318513350511, 0.030149476939334056, 0.356760545010754, 0.07685912605154806, 0.13953920949495877, -0.23638254826781466, 0.0150503911993567, 0.01739074059170545] |
711.2019 | Hints of (trans-Planckian) asymptotic freedom in semiclassical cosmology | We employ the semiclassical approximation to the Wheeler-DeWitt equation in
the spatially flat de Sitter Universe to investigate the dynamics of a
minimally coupled scalar field near the Planck scale. We find that, contrary to
naive intuition, the effects of quantum gravitational fluctuations become
negligible and the scalar field states asymptotically approach plane-waves at
very early times. These states can then be used as initial conditions for the
quantum states of matter to show that each mode essentially originated in the
minimum energy vacuum. Although the full quantum dynamics cannot be solved
exactly for the case at hand, our results can be considered as supporting the
general idea of asymptotic safety in quantum gravity.
| gr-qc hep-th | we employ the semiclassical approximation to the wheelerdewitt equation in the spatially flat de sitter universe to investigate the dynamics of a minimally coupled scalar field near the planck scale we find that contrary to naive intuition the effects of quantum gravitational fluctuations become negligible and the scalar field states asymptotically approach planewaves at very early times these states can then be used as initial conditions for the quantum states of matter to show that each mode essentially originated in the minimum energy vacuum although the full quantum dynamics cannot be solved exactly for the case at hand our results can be considered as supporting the general idea of asymptotic safety in quantum gravity | [['we', 'employ', 'the', 'semiclassical', 'approximation', 'to', 'the', 'wheelerdewitt', 'equation', 'in', 'the', 'spatially', 'flat', 'de', 'sitter', 'universe', 'to', 'investigate', 'the', 'dynamics', 'of', 'a', 'minimally', 'coupled', 'scalar', 'field', 'near', 'the', 'planck', 'scale', 'we', 'find', 'that', 'contrary', 'to', 'naive', 'intuition', 'the', 'effects', 'of', 'quantum', 'gravitational', 'fluctuations', 'become', 'negligible', 'and', 'the', 'scalar', 'field', 'states', 'asymptotically', 'approach', 'planewaves', 'at', 'very', 'early', 'times', 'these', 'states', 'can', 'then', 'be', 'used', 'as', 'initial', 'conditions', 'for', 'the', 'quantum', 'states', 'of', 'matter', 'to', 'show', 'that', 'each', 'mode', 'essentially', 'originated', 'in', 'the', 'minimum', 'energy', 'vacuum', 'although', 'the', 'full', 'quantum', 'dynamics', 'can', 'not', 'be', 'solved', 'exactly', 'for', 'the', 'case', 'at', 'hand', 'our', 'results', 'can', 'be', 'considered', 'as', 'supporting', 'the', 'general', 'idea', 'of', 'asymptotic', 'safety', 'in', 'quantum', 'gravity']] | [-0.12045640308895837, 0.18460274543208272, -0.15417713678401448, 0.12218803162888989, -0.03910375934539606, -0.14605833921055106, -0.03337817007432813, 0.28495187242515385, -0.21768334211538667, -0.26910332769621165, 0.08177778057288379, -0.2424394524777713, -0.12255571844947079, 0.16601344201227894, -0.011599118772732175, 0.049416322742953246, 0.033549955296937536, 0.0692848865631158, -0.035087257833220066, -0.259853861918268, 0.3298576860891088, 0.08532535741915521, 0.28634592874542525, 0.025918611398209696, 0.07269909533712526, -0.02757248556767793, 0.05598895430321927, 0.055399650080210486, -0.12539616715955124, 0.02540156465560279, 0.2508637419456373, 0.08424000213246631, 0.24762890160731646, -0.4830061503827734, -0.23528074025297943, 0.10502223798033336, 0.16421412409728636, 0.2151999772688293, -0.020905727714948034, -0.2998735624709693, 0.08080251042771598, -0.1294231905075519, -0.18969487390359457, -0.05400807401975212, -0.046016498035042666, -0.0832356739141371, -0.24508426721896168, 0.08945003834998479, -0.001479914788480686, -0.05586026095906677, -0.07182519778447306, -0.059409445559646445, -0.02922015849136464, 0.08117410576821345, 0.04666163834702709, 0.028759885886076676, 0.14545602376127373, -0.1396486829034984, -0.11129441426904953, 0.38174576662156895, -0.14517452337819597, -0.2204700539779404, 0.15484516278881094, -0.15521019885883383, -0.11364147746530565, 0.07834266029986674, 0.1315127298802785, 0.13361943641110607, -0.11002647088759619, 0.1416491453773747, 0.03164976383356945, 0.16604391679815625, 0.08333787713199854, 0.0815097995654113, 0.2643146052632643, 0.0620468059817896, 0.05633096854485895, 0.10523108196667517, -0.03431552257793753, -0.1792794097336414, -0.34583958925112435, -0.14730409374055656, -0.1935635496707856, 0.08421315107223801, -0.10418455687784287, -0.18940152478930744, 0.3644646801186078, 0.15320701218088684, 0.14060479954856894, 0.04171123383566737, 0.25606284297030907, 0.1340901163244701, 0.03617566950700205, 0.12161351991937566, 0.32052392732837925, 0.12413669459359801, 0.09862777312974567, -0.265261105340703, -0.030961501898001068, 0.03658018285084678] |
711.202 | CP-violating Loop Effects in the Higgs Sector of the MSSM | CP-violating effects in the Higgs sector of the Minimal Supersymmetric
Standard Model with complex parameters (cMSSM) are induced by potentially large
higher-order corrections. As a consequence, all three neutral Higgs bosons can
mix with each other. Recent results for loop corrections in the Higgs sector of
the cMSSM are reviewed. Results for propagator-type corrections of O(alpha_t
alpha_s) and complete one-loop results for Higgs cascade decays of the kind h_a
-> h_b h_c are summarised, and the proper treatment of external Higgs bosons in
Higgs-boson production and decay processes is discussed.
| hep-ph | cpviolating effects in the higgs sector of the minimal supersymmetric standard model with complex parameters cmssm are induced by potentially large higherorder corrections as a consequence all three neutral higgs bosons can mix with each other recent results for loop corrections in the higgs sector of the cmssm are reviewed results for propagatortype corrections of oalpha_t alpha_s and complete oneloop results for higgs cascade decays of the kind h_a h_b h_c are summarised and the proper treatment of external higgs bosons in higgsboson production and decay processes is discussed | [['cpviolating', 'effects', 'in', 'the', 'higgs', 'sector', 'of', 'the', 'minimal', 'supersymmetric', 'standard', 'model', 'with', 'complex', 'parameters', 'cmssm', 'are', 'induced', 'by', 'potentially', 'large', 'higherorder', 'corrections', 'as', 'a', 'consequence', 'all', 'three', 'neutral', 'higgs', 'bosons', 'can', 'mix', 'with', 'each', 'other', 'recent', 'results', 'for', 'loop', 'corrections', 'in', 'the', 'higgs', 'sector', 'of', 'the', 'cmssm', 'are', 'reviewed', 'results', 'for', 'propagatortype', 'corrections', 'of', 'oalpha_t', 'alpha_s', 'and', 'complete', 'oneloop', 'results', 'for', 'higgs', 'cascade', 'decays', 'of', 'the', 'kind', 'h_a', 'h_b', 'h_c', 'are', 'summarised', 'and', 'the', 'proper', 'treatment', 'of', 'external', 'higgs', 'bosons', 'in', 'higgsboson', 'production', 'and', 'decay', 'processes', 'is', 'discussed']] | [-0.0894138583615213, 0.3222235954324767, 0.01833853369390362, 0.18620830091119356, -0.08605493989699844, -0.19163431643163054, -0.014312263948351061, 0.30722181433602497, -0.16893386417539435, -0.2211637965120961, 0.01665158951890477, -0.3217787483204784, -0.017282347508779404, 0.18429971656636493, 0.07432458371844854, 0.11893249379622677, 0.10464939632023988, -0.015821402573309253, -0.02874358653959431, -0.2975129117284054, 0.32488749083654767, -0.028938577186023252, 0.14277138364804762, 0.12250925530417917, -0.012954295455907167, 0.0165811421851931, -0.06387586970852814, -0.06794113062029139, -0.14491250573165632, 0.07057953435336396, 0.15974939795566745, 0.027370033722915008, 0.09453151000433424, -0.29844878009112363, -0.12632559348693054, 0.15785059182423303, 0.16493829198997845, 0.10740866965164295, -0.028356163689259733, -0.3556517003355234, 0.09325637847179903, -0.24091129091285754, -0.10020625066493502, -0.1195330356948831, -0.06129456672482611, -0.13883929719541516, -0.3763214685650689, 0.07504068155710199, -0.08567040757370296, 0.045302875022131824, 0.04237433720976533, -0.2165006171634651, -0.11782607091904691, 0.03574938897901539, 0.20264036661102908, 0.013942998242721464, 0.20831229489589675, -0.2553238356067391, -0.23858139548827423, 0.4377462606918946, -0.15436169460646054, -0.19435879398461725, 0.10538970083626134, -0.18389534208860792, -0.1751533188919924, 0.14801185703679418, 0.18727363280826406, 0.04976433329284191, -0.17292381526400033, 0.2664663731257871, 0.03657522698173697, 0.0800701849178275, -0.0021267509914599777, 0.0994739459011327, 0.2186820782103649, 0.16017352002725171, -0.022898457651392798, 0.07325207472195472, -0.0025287415371851975, -0.1343682387351906, -0.5406333295147071, -0.1407256927027294, 0.02956190998168934, 0.022652802748207964, -0.10527998682983308, -0.13771488433808424, 0.37743620341120476, 0.07827863365338508, 0.23650389161546914, 0.011301222822388237, 0.3094012068396204, 0.10590120445638686, 0.09398086695523744, -0.014190838541416975, 0.3450222343279656, 0.16345609040418116, 0.07858528194195602, -0.2154550179368241, -0.03159001531743894, 0.11877389078740072] |
711.2021 | A New Theory of Dynamic Arrest in Colloidal Mixtures | We present a new first-principles theory of dynamic arrest in colloidal
mixtures based on the multi-component self-consistent generalized Langevin
equation (SCGLE) theory of colloid dynamics [Phys. Rev. E {\bf 72}, 031107
(2005); ibid {\bf 76}, 039902 (2007)]. We illustrate its application with the
description of dynamic arrest in two simple model colloidal mixtures, namely,
the hard-sphere and the repulsive Yukawa binary mixtures. Our results include
the observation of the two patterns of dynamic arrest, one in which both
species become simultaneously arrested, and the other involving the sequential
arrest of the two species. The latter case gives rise to mixed states in which
one species is arrested while the other species remains mobile. We also derive
the ("fixed point") equations for the non-ergodic parameters of the system,
which takes the surprisingly simple form of a system of coupled equations for
the localization length of the particles of each species. The solution of this
system of equations indicates unambiguously which species is arrested (finite
localization length) and which species remains ergodic (infinite localization
length). As a result, we are able to draw the entire ergodic--non-ergodic phase
diagram of the binary hard-sphere mixture.
| cond-mat.mtrl-sci | we present a new firstprinciples theory of dynamic arrest in colloidal mixtures based on the multicomponent selfconsistent generalized langevin equation scgle theory of colloid dynamics phys rev e bf 72 031107 2005 ibid bf 76 039902 2007 we illustrate its application with the description of dynamic arrest in two simple model colloidal mixtures namely the hardsphere and the repulsive yukawa binary mixtures our results include the observation of the two patterns of dynamic arrest one in which both species become simultaneously arrested and the other involving the sequential arrest of the two species the latter case gives rise to mixed states in which one species is arrested while the other species remains mobile we also derive the fixed point equations for the nonergodic parameters of the system which takes the surprisingly simple form of a system of coupled equations for the localization length of the particles of each species the solution of this system of equations indicates unambiguously which species is arrested finite localization length and which species remains ergodic infinite localization length as a result we are able to draw the entire ergodicnonergodic phase diagram of the binary hardsphere mixture | [['we', 'present', 'a', 'new', 'firstprinciples', 'theory', 'of', 'dynamic', 'arrest', 'in', 'colloidal', 'mixtures', 'based', 'on', 'the', 'multicomponent', 'selfconsistent', 'generalized', 'langevin', 'equation', 'scgle', 'theory', 'of', 'colloid', 'dynamics', 'phys', 'rev', 'e', 'bf', '72', '031107', '2005', 'ibid', 'bf', '76', '039902', '2007', 'we', 'illustrate', 'its', 'application', 'with', 'the', 'description', 'of', 'dynamic', 'arrest', 'in', 'two', 'simple', 'model', 'colloidal', 'mixtures', 'namely', 'the', 'hardsphere', 'and', 'the', 'repulsive', 'yukawa', 'binary', 'mixtures', 'our', 'results', 'include', 'the', 'observation', 'of', 'the', 'two', 'patterns', 'of', 'dynamic', 'arrest', 'one', 'in', 'which', 'both', 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711.2022 | On the Critical Exponents for the \Lambda-Transition in Liquid Helium | The use of a new method for summing divergent series makes it possible to
significantly increase the accuracy of determining the critical exponents from
the field theoretical renormalization group. The exponent value \nu=0.6700\pm
0.0006 for the \lambda-transition in liquid helium is in good agreement with
the experiment, but contradicts the last theoretical results based on using
high-temperature series, the Monte Carlo method, and their synthesis.
| cond-mat.stat-mech hep-ph hep-th | the use of a new method for summing divergent series makes it possible to significantly increase the accuracy of determining the critical exponents from the field theoretical renormalization group the exponent value nu06700pm 00006 for the lambdatransition in liquid helium is in good agreement with the experiment but contradicts the last theoretical results based on using hightemperature series the monte carlo method and their synthesis | [['the', 'use', 'of', 'a', 'new', 'method', 'for', 'summing', 'divergent', 'series', 'makes', 'it', 'possible', 'to', 'significantly', 'increase', 'the', 'accuracy', 'of', 'determining', 'the', 'critical', 'exponents', 'from', 'the', 'field', 'theoretical', 'renormalization', 'group', 'the', 'exponent', 'value', 'nu06700pm', '00006', 'for', 'the', 'lambdatransition', 'in', 'liquid', 'helium', 'is', 'in', 'good', 'agreement', 'with', 'the', 'experiment', 'but', 'contradicts', 'the', 'last', 'theoretical', 'results', 'based', 'on', 'using', 'hightemperature', 'series', 'the', 'monte', 'carlo', 'method', 'and', 'their', 'synthesis']] | [-0.052557249979145126, 0.09864024422859075, -0.1423905393021414, 0.038900156161616906, -0.031957060466993426, -0.09567883676936617, 0.11173418539692648, 0.3628695897295984, -0.22000988957006484, -0.3005563686019741, 0.08215795324576902, -0.323424019763479, -0.09989284971379675, 0.28535035192908254, -0.0036480891139945015, 0.11349152127513662, 0.05046143541261472, 0.018142432687454857, -0.1309421145278975, -0.24732601054711267, 0.27265926616382785, 0.1185214151701075, 0.31525987703935243, 0.05001899175840663, 0.05686847692413721, -0.001763939821103122, -0.04673283072770573, -0.0012531217289506458, -0.1648519002701505, 0.10480849471059628, 0.22436082973945304, 0.0184064162967843, 0.2262133321055444, -0.37659911971422844, -0.19282514334190637, 0.05631657219782937, 0.14357453427510336, 0.12369290490460116, -0.0797843075451965, -0.22661671122477856, 0.059579560982456314, -0.1850549051341659, -0.1394640428479761, -0.09247810697706882, -0.021719803151427186, -0.0038944630946389225, -0.26860038003360387, 0.12537361259455793, -0.0507207524497062, 0.09438794857123867, -0.04499625463722623, -0.1758218871545978, 0.04946818927419372, 0.13764749780966667, 0.08699543531656673, 0.07543701160466298, 0.11073489495902322, -0.1337357558804797, -0.09019015944795683, 0.3495041688438505, -0.09933612530585378, -0.08928249514065101, 0.17172021441001561, -0.17662354005733505, -0.14476590838603443, 0.19680828228592873, 0.06901124826072191, 0.11704517628095346, -0.08728132727264892, 0.06556083395753376, -0.025837184773990884, 0.18854107944935095, -0.012635723120183684, -0.04402618007327419, 0.16609178579528816, 0.2111419590510195, 0.0019208966550650075, 0.0807914916840673, -0.0579046136517718, -0.14826465013993584, -0.29799784102942795, -0.17004083238134626, -0.20155576871911762, -0.0006461245939135551, -0.11876053731225511, -0.16854765865718946, 0.3763633351190947, 0.2368852086365223, 0.17451214209359023, 0.07745826919563115, 0.2608663245337084, 0.128350430590217, 0.03996927330081235, 0.039533076756924856, 0.2782649995351676, 0.1490739325672621, 0.07905159481742885, -0.28519098864126136, 0.09364675618417095, 0.09598117729910882] |
711.2023 | Empirical Evaluation of Four Tensor Decomposition Algorithms | Higher-order tensor decompositions are analogous to the familiar Singular
Value Decomposition (SVD), but they transcend the limitations of matrices
(second-order tensors). SVD is a powerful tool that has achieved impressive
results in information retrieval, collaborative filtering, computational
linguistics, computational vision, and other fields. However, SVD is limited to
two-dimensional arrays of data (two modes), and many potential applications
have three or more modes, which require higher-order tensor decompositions.
This paper evaluates four algorithms for higher-order tensor decomposition:
Higher-Order Singular Value Decomposition (HO-SVD), Higher-Order Orthogonal
Iteration (HOOI), Slice Projection (SP), and Multislice Projection (MP). We
measure the time (elapsed run time), space (RAM and disk space requirements),
and fit (tensor reconstruction accuracy) of the four algorithms, under a
variety of conditions. We find that standard implementations of HO-SVD and HOOI
do not scale up to larger tensors, due to increasing RAM requirements. We
recommend HOOI for tensors that are small enough for the available RAM and MP
for larger tensors.
| cs.LG cs.CL cs.IR | higherorder tensor decompositions are analogous to the familiar singular value decomposition svd but they transcend the limitations of matrices secondorder tensors svd is a powerful tool that has achieved impressive results in information retrieval collaborative filtering computational linguistics computational vision and other fields however svd is limited to twodimensional arrays of data two modes and many potential applications have three or more modes which require higherorder tensor decompositions this paper evaluates four algorithms for higherorder tensor decomposition higherorder singular value decomposition hosvd higherorder orthogonal iteration hooi slice projection sp and multislice projection mp we measure the time elapsed run time space ram and disk space requirements and fit tensor reconstruction accuracy of the four algorithms under a variety of conditions we find that standard implementations of hosvd and hooi do not scale up to larger tensors due to increasing ram requirements we recommend hooi for tensors that are small enough for the available ram and mp for larger tensors | [['higherorder', 'tensor', 'decompositions', 'are', 'analogous', 'to', 'the', 'familiar', 'singular', 'value', 'decomposition', 'svd', 'but', 'they', 'transcend', 'the', 'limitations', 'of', 'matrices', 'secondorder', 'tensors', 'svd', 'is', 'a', 'powerful', 'tool', 'that', 'has', 'achieved', 'impressive', 'results', 'in', 'information', 'retrieval', 'collaborative', 'filtering', 'computational', 'linguistics', 'computational', 'vision', 'and', 'other', 'fields', 'however', 'svd', 'is', 'limited', 'to', 'twodimensional', 'arrays', 'of', 'data', 'two', 'modes', 'and', 'many', 'potential', 'applications', 'have', 'three', 'or', 'more', 'modes', 'which', 'require', 'higherorder', 'tensor', 'decompositions', 'this', 'paper', 'evaluates', 'four', 'algorithms', 'for', 'higherorder', 'tensor', 'decomposition', 'higherorder', 'singular', 'value', 'decomposition', 'hosvd', 'higherorder', 'orthogonal', 'iteration', 'hooi', 'slice', 'projection', 'sp', 'and', 'multislice', 'projection', 'mp', 'we', 'measure', 'the', 'time', 'elapsed', 'run', 'time', 'space', 'ram', 'and', 'disk', 'space', 'requirements', 'and', 'fit', 'tensor', 'reconstruction', 'accuracy', 'of', 'the', 'four', 'algorithms', 'under', 'a', 'variety', 'of', 'conditions', 'we', 'find', 'that', 'standard', 'implementations', 'of', 'hosvd', 'and', 'hooi', 'do', 'not', 'scale', 'up', 'to', 'larger', 'tensors', 'due', 'to', 'increasing', 'ram', 'requirements', 'we', 'recommend', 'hooi', 'for', 'tensors', 'that', 'are', 'small', 'enough', 'for', 'the', 'available', 'ram', 'and', 'mp', 'for', 'larger', 'tensors']] | [-0.11147882486034606, 0.05925917316157863, -0.09512391174504967, 0.06578550198768505, -0.1603872097066586, -0.13946483807444995, -0.05646039902469811, 0.3957734449338988, -0.29692244056448247, -0.27297274958424317, 0.17858888817374133, -0.2504316706484207, -0.1426153486702919, 0.15130497317734826, -0.0315811823022628, 0.10421428472680808, 0.1062225681091161, -0.016880820683970954, -0.1421176213009646, -0.25663554290918716, 0.2804572966847416, 0.03889249646509031, 0.32460546761212294, 0.003137623901118718, 0.09502106473221789, -0.02164905608460342, -0.07769475794696021, 0.030460992051543283, -0.06952076907698526, 0.1353929370653423, 0.29716557127997606, 0.2077006943137297, 0.2953226325518024, -0.4468670926706971, -0.1489451185173396, 0.128976208433134, 0.153493537299581, 0.08528185309183274, -0.0018993738776771352, -0.2187125835181126, 0.12919720569215482, -0.189034256861551, -0.050276445377172914, -0.1951893381679243, 0.019166453890853894, -0.05962295541481215, -0.2798046734500325, 0.06729206674784985, 0.07623283045422051, 0.03107552584729292, -0.03515910897140374, -0.22285139416608046, 0.050242460329882194, 0.07659717274203007, 0.025576572361513502, 0.009460858478644312, 0.14501192390262704, -0.13306208231790964, -0.131355804300416, 0.40359720781316644, -0.06465777990689396, -0.25219873631806494, 0.1908559237179235, -0.08995282765677047, -0.1591421264193003, 0.13116616153366184, 0.18630634462325424, 0.09774627482940285, -0.06588197534950743, 0.08458617524977527, 0.021547858626728162, 0.1466042492443508, 0.12415533003239136, 0.04761237827563108, 0.10539052719777485, 0.07634630700889623, 0.1143290408174566, 0.0868601360465927, -0.0467145803074042, -0.07908537299460117, -0.20784174160645255, -0.14626250336965863, -0.2166682206571641, -0.027104797115481354, -0.18432434334841766, -0.18294003995358007, 0.37897482751019346, 0.1561003322449495, 0.12902734827092094, 0.09656806570498284, 0.3804055389380024, 0.09942926866230818, 0.13671003302644189, 0.09140228803134845, 0.2035565957040438, 0.14267156315153265, 0.1313478661197349, -0.1589463912009162, 0.019219771660161467, 0.08896278184633585] |
711.2024 | A Chandra Study of the Rosette Star-Forming Complex. I. The Stellar
Population and Structure of the Young Open Cluster NGC 2244 | We present the first high spatial resolution Chandra X-ray study of NGC 2244,
the 2 Myr old stellar cluster immersed in the Rosette Nebula. Over 900 X-ray
sources are detected; 77% have optical or FLAMINGOS near-infrared (NIR) stellar
counterparts and are mostly previously uncatalogued young stellar cluster
members. All known OB stars with spectral type earlier than B1 are detected and
the X-ray selected stellar population is estimated to be nearly complete
between 0.5 and 3 Msun. The X-ray luminosity function (XLF) ranges from
29.4<logLx<32 ergs/s in the hard (2-8keV) band. By comparing the NGC 2244 and
Orion Nebula Cluster XLFs, we estimate a total population of 2000 stars in NGC
2244. A number of further results emerge from our analysis: The XLF and the
associated K-band luminosity function indicate a normal Salpeter initial mass
function (IMF) for NGC 2244. This is inconsistent with the top-heavy IMF
reported from earlier optical studies that lacked a good census of <4Msun
stars. The spatial distribution of X-ray stars is strongly concentrated around
the central O5 star, HD 46150. The other early O star, HD 46223, has few
companions. The cluster's stellar radial density profile shows two distinctive
structures. This double structure, combined with the absence of mass
segregation, indicates that this cluster is not in dynamical equilibrium. The
spatial distribution of X-ray selected K-excess disk stars and embedded stars
is asymmetric with an apparent deficit towards the north. The fraction of
X-ray-selected cluster members with K-band excesses caused by inner
protoplanetary disks is 6%, slightly lower than the 10% disk fraction estimated
from the FLAMINGOS study based on the NIR-selected sample. This is due to the
high efficiency of X-ray surveys in locating disk-free T Tauri stars.[Abridged]
| astro-ph | we present the first high spatial resolution chandra xray study of ngc 2244 the 2 myr old stellar cluster immersed in the rosette nebula over 900 xray sources are detected 77 have optical or flamingos nearinfrared nir stellar counterparts and are mostly previously uncatalogued young stellar cluster members all known ob stars with spectral type earlier than b1 are detected and the xray selected stellar population is estimated to be nearly complete between 05 and 3 msun the xray luminosity function xlf ranges from 294loglx32 ergss in the hard 28kev band by comparing the ngc 2244 and orion nebula cluster xlfs we estimate a total population of 2000 stars in ngc 2244 a number of further results emerge from our analysis the xlf and the associated kband luminosity function indicate a normal salpeter initial mass function imf for ngc 2244 this is inconsistent with the topheavy imf reported from earlier optical studies that lacked a good census of 4msun stars the spatial distribution of xray stars is strongly concentrated around the central o5 star hd 46150 the other early o star hd 46223 has few companions the clusters stellar radial density profile shows two distinctive structures this double structure combined with the absence of mass segregation indicates that this cluster is not in dynamical equilibrium the spatial distribution of xray selected kexcess disk stars and embedded stars is asymmetric with an apparent deficit towards the north the fraction of xrayselected cluster members with kband excesses caused by inner protoplanetary disks is 6 slightly lower than the 10 disk fraction estimated from the flamingos study based on the nirselected sample this is due to the high efficiency of xray surveys in locating diskfree t tauri starsabridged | [['we', 'present', 'the', 'first', 'high', 'spatial', 'resolution', 'chandra', 'xray', 'study', 'of', 'ngc', '2244', 'the', '2', 'myr', 'old', 'stellar', 'cluster', 'immersed', 'in', 'the', 'rosette', 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711.2025 | Quantum properties of counter-propagating two-photon states generated in
a planar waveguide | A nonlinear planar waveguide pumped by a beam orthogonal to its surface may
serve as a versatile source of photon pairs. Changing pump-pulse duration,
pump-beam transverse width, and angular decomposition of pump-beam frequencies
characteristics of a photon pair including spectral widths of signal and idler
fields, their time durations as well as degree of entanglement of two fields
can be changed significantly. Using the measured spectral widths of the
down-converted fields and width of a coincidence-count dip in a Hong-Ou-Mandel
interferometer entropy of entanglement can be determined.
| quant-ph | a nonlinear planar waveguide pumped by a beam orthogonal to its surface may serve as a versatile source of photon pairs changing pumppulse duration pumpbeam transverse width and angular decomposition of pumpbeam frequencies characteristics of a photon pair including spectral widths of signal and idler fields their time durations as well as degree of entanglement of two fields can be changed significantly using the measured spectral widths of the downconverted fields and width of a coincidencecount dip in a hongoumandel interferometer entropy of entanglement can be determined | [['a', 'nonlinear', 'planar', 'waveguide', 'pumped', 'by', 'a', 'beam', 'orthogonal', 'to', 'its', 'surface', 'may', 'serve', 'as', 'a', 'versatile', 'source', 'of', 'photon', 'pairs', 'changing', 'pumppulse', 'duration', 'pumpbeam', 'transverse', 'width', 'and', 'angular', 'decomposition', 'of', 'pumpbeam', 'frequencies', 'characteristics', 'of', 'a', 'photon', 'pair', 'including', 'spectral', 'widths', 'of', 'signal', 'and', 'idler', 'fields', 'their', 'time', 'durations', 'as', 'well', 'as', 'degree', 'of', 'entanglement', 'of', 'two', 'fields', 'can', 'be', 'changed', 'significantly', 'using', 'the', 'measured', 'spectral', 'widths', 'of', 'the', 'downconverted', 'fields', 'and', 'width', 'of', 'a', 'coincidencecount', 'dip', 'in', 'a', 'hongoumandel', 'interferometer', 'entropy', 'of', 'entanglement', 'can', 'be', 'determined']] | [-0.1672145595517138, 0.23366521619495817, -0.09507737688763046, 0.04838554383705145, -0.04126292402085302, -0.17045853749966655, 0.014861145452863869, 0.4847892825973445, -0.24113834220059643, -0.313341631265036, 0.002487748308674614, -0.22316219920999017, 0.01108342683178255, 0.2530701984276717, 0.02155213720625502, 0.08777032434959071, 0.04872142266878195, -0.0053723821973149805, -0.030114957928957267, -0.11483165230093545, 0.25461724325586327, 0.05680621077906041, 0.2914750200412611, 0.07374633118595886, 0.10438048834216664, 0.028190022773355587, -0.009128838734722686, 0.012085967814956588, -0.06233403632342387, 0.04732431821931882, 0.22882016897790305, 0.09025259458342161, 0.19075386480952816, -0.32635383748973923, -0.20080057032748885, 0.09486076668247409, 0.17798491217324447, 0.10336918654402011, 0.0245827209249931, -0.314373649399856, -0.015857908318097563, -0.1229760838907022, -0.13781392174483886, 0.01852085441350937, 0.006373981078123224, 0.08159228089404688, -0.2568009244599219, 0.08250184244765289, 0.038442015605068755, 0.057714982225891505, 0.051395216345219694, -0.06822247871722298, -0.10779453511349857, 0.08044299732722428, -0.02295782216075251, 0.011578520808112005, 0.18205066676112427, -0.13318382099741835, -0.17375275955117983, 0.34795440289181195, -0.13893424754898095, -0.14292138159354004, 0.08885856760644364, -0.1601267834247529, 0.02733373502403198, 0.19505275042470674, 0.18952015109745593, 0.10204341793807502, -0.0932821343363873, -0.01982890642395286, 0.017581185759526902, 0.23465790683082466, 0.2077587228643055, 0.19625319757809243, 0.24212680331527672, 0.07929013207977659, 0.005342845924080874, 0.19968988831642073, -0.15577719042655722, 0.002873391940675933, -0.2886182104783325, -0.14206229275006843, -0.22459797479811755, 0.08123100180735533, -0.08288351483806973, -0.1352017024564075, 0.5106548040933993, 0.02272256375584837, 0.21705458403950365, -0.00019679265096783638, 0.29904990142275545, 0.1894932359031498, 0.08471069954089477, -0.01118744834294093, 0.24911728713276057, 0.2407689443896471, 0.10724066018030562, -0.25014188789345065, -0.013228147071197459, -0.028273902415972333] |
711.2026 | Galaxy Counts at 24 Microns in the SWIRE Fields | This paper presents galaxy source counts at 24 microns in the six Spitzer
Wide-field InfraRed Extragalactic (SWIRE) fields. The source counts are
compared to counts in other fields, and to model predictions that have been
updated since the launch of Spitzer. This analysis confirms a very steep rise
in the Euclidean-normalized differential number counts between 2 mJy and 0.3
mJy. Variations in the counts between fields show the effects of sample
variance in the flux range 0.5-10 mJy, up to 100% larger than Poisson errors.
Nonetheless, a "shoulder" in the normalized counts persists at around 3 mJy.
The peak of the normalized counts at 0.3 mJy is higher and narrower than most
models predict. In the ELAIS N1 field, the 24 micron data are combined with
Spitzer-IRAC data and five-band optical imaging, and these bandmerged data are
fit with photometric redshift templates. Above 1 mJy the counts are dominated
by galaxies at z less than 0.3. By 300 microJy, about 25% are between z ~
0.3-0.8, and a significant fraction are at z ~ 1.3-2. At low redshifts the
counts are dominated by spirals, and starbursts rise in number density to
outnumber the spirals' contribution to the counts below 1 mJy.
| astro-ph | this paper presents galaxy source counts at 24 microns in the six spitzer widefield infrared extragalactic swire fields the source counts are compared to counts in other fields and to model predictions that have been updated since the launch of spitzer this analysis confirms a very steep rise in the euclideannormalized differential number counts between 2 mjy and 03 mjy variations in the counts between fields show the effects of sample variance in the flux range 0510 mjy up to 100 larger than poisson errors nonetheless a shoulder in the normalized counts persists at around 3 mjy the peak of the normalized counts at 03 mjy is higher and narrower than most models predict in the elais n1 field the 24 micron data are combined with spitzerirac data and fiveband optical imaging and these bandmerged data are fit with photometric redshift templates above 1 mjy the counts are dominated by galaxies at z less than 03 by 300 microjy about 25 are between z 0308 and a significant fraction are at z 132 at low redshifts the counts are dominated by spirals and starbursts rise in number density to outnumber the spirals contribution to the counts below 1 mjy | [['this', 'paper', 'presents', 'galaxy', 'source', 'counts', 'at', '24', 'microns', 'in', 'the', 'six', 'spitzer', 'widefield', 'infrared', 'extragalactic', 'swire', 'fields', 'the', 'source', 'counts', 'are', 'compared', 'to', 'counts', 'in', 'other', 'fields', 'and', 'to', 'model', 'predictions', 'that', 'have', 'been', 'updated', 'since', 'the', 'launch', 'of', 'spitzer', 'this', 'analysis', 'confirms', 'a', 'very', 'steep', 'rise', 'in', 'the', 'euclideannormalized', 'differential', 'number', 'counts', 'between', '2', 'mjy', 'and', '03', 'mjy', 'variations', 'in', 'the', 'counts', 'between', 'fields', 'show', 'the', 'effects', 'of', 'sample', 'variance', 'in', 'the', 'flux', 'range', '0510', 'mjy', 'up', 'to', '100', 'larger', 'than', 'poisson', 'errors', 'nonetheless', 'a', 'shoulder', 'in', 'the', 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711.2027 | The ignition process in type Ia supernovae: numerical simulations of
core temperature perturbations | The onset of the thermonuclear runaway in a Chandrasekhar-mass white dwarf,
leading to the explosion as a type Ia supernova, is studied with hydrodynamical
simulations. We investigate the evolution of temperature fluctuations
(``bubbles'') in the WD's convective core by means of 2D numerical simulations.
We show how the occurrence of the thermonuclear runaway depends on various
bubble parameters. The relevance of the progenitor's composition for the
ignition process is also discussed.
| astro-ph | the onset of the thermonuclear runaway in a chandrasekharmass white dwarf leading to the explosion as a type ia supernova is studied with hydrodynamical simulations we investigate the evolution of temperature fluctuations bubbles in the wds convective core by means of 2d numerical simulations we show how the occurrence of the thermonuclear runaway depends on various bubble parameters the relevance of the progenitors composition for the ignition process is also discussed | [['the', 'onset', 'of', 'the', 'thermonuclear', 'runaway', 'in', 'a', 'chandrasekharmass', 'white', 'dwarf', 'leading', 'to', 'the', 'explosion', 'as', 'a', 'type', 'ia', 'supernova', 'is', 'studied', 'with', 'hydrodynamical', 'simulations', 'we', 'investigate', 'the', 'evolution', 'of', 'temperature', 'fluctuations', 'bubbles', 'in', 'the', 'wds', 'convective', 'core', 'by', 'means', 'of', '2d', 'numerical', 'simulations', 'we', 'show', 'how', 'the', 'occurrence', 'of', 'the', 'thermonuclear', 'runaway', 'depends', 'on', 'various', 'bubble', 'parameters', 'the', 'relevance', 'of', 'the', 'progenitors', 'composition', 'for', 'the', 'ignition', 'process', 'is', 'also', 'discussed']] | [-0.07583215961136042, 0.1449097828336165, -0.04649290656277411, 0.12276804188203783, -0.08998086956710043, -0.00776650753974075, 0.08983702317509852, 0.32022758722829986, -0.20683061719780238, -0.2472001410443598, 0.09317729947104736, -0.27581846948818, -0.08551736763665374, 0.22413842226575378, -0.028665514885854552, -0.005603421243353629, 0.15229624661971147, -0.0365323795827145, -0.1227143182350375, -0.2872580239995265, 0.4028516111659332, 0.1345863270747121, 0.19750210687413183, -0.02330985528902269, 0.022440040454557036, -0.15889077217147593, -0.03744957994827083, -0.08447494622792157, -0.2325271754591188, -0.07270513924533947, 0.15259098164137933, 0.108119589676687, 0.2465208532800242, -0.4582382734917419, -0.3644922490585858, 0.07290245931018406, 0.2047392547714301, 0.08888252615981118, -0.13647344185434557, -0.20440985583765825, 0.07424750281366664, -0.2579808446290103, -0.16498731806690634, 0.06686463207006454, 0.027064214736013344, 0.14465865454780805, -0.26444567802926183, 0.1419556034482117, 0.04279476081506467, 0.006776614967261401, -0.12149159589939763, -0.062310489524208326, -0.07071128125059825, 0.041984715685904235, 0.05901754920946395, -0.05674269786235732, 0.15052426508037556, -0.1585524955528303, -0.02243655562584459, 0.44919173961954556, -0.0703900357623073, -0.011873255682204075, 0.23451428062899013, -0.16968416917780546, -0.07474570621696996, 0.14289042129981475, 0.14387767249062447, 0.1084942625315768, -0.14302082712316072, -0.04568665604513716, 0.0254109490951392, 0.08464634822169975, 0.0496524722433426, -0.02718054773611866, 0.3025138879089918, 0.2934184560526005, -0.07462992755250192, 0.08554420077805998, -0.2054530338705583, -0.07561647941187864, -0.3048000082006337, -0.10910660814179081, -0.1507086655072553, 0.11906764256558053, -0.11087598595571455, -0.19636808203297182, 0.33726062769936005, 0.1461634986286222, 0.17556247471923558, -0.07385548111707183, 0.21737056461648202, 0.09942809198359946, 0.022184178108533084, 0.10053478048222375, 0.29542199248106965, 0.21570813286275617, 0.13120902186049752, -0.35010932241632065, 0.10786573744287163, 0.08286757738342587] |
711.2028 | Eight new MSPs in NGC 6440 and NGC 6441 | We report the discovery of five new millisecond pulsars in the globular
cluster NGC 6440 and three new ones in NGC 6441; each cluster has one
previously known pulsar. Four of the new pulsars are found in binary systems.
One of the new pulsars, PSR J1748-2021B in NGC 6440, is notable for its
eccentric (e = 0.57) and wide (P_b = 20.5 days) orbit. If the rate of advance
of periastron is due solely to general relativity, we can estimate of the total
mass of this binary system: 2.92 +/- 0.20 solar masses. This would imply an
anomalously large mass for this pulsar, which could introduce important
constraints in the study of the equation of state for cold neutron matter.
| astro-ph | we report the discovery of five new millisecond pulsars in the globular cluster ngc 6440 and three new ones in ngc 6441 each cluster has one previously known pulsar four of the new pulsars are found in binary systems one of the new pulsars psr j17482021b in ngc 6440 is notable for its eccentric e 057 and wide p_b 205 days orbit if the rate of advance of periastron is due solely to general relativity we can estimate of the total mass of this binary system 292 020 solar masses this would imply an anomalously large mass for this pulsar which could introduce important constraints in the study of the equation of state for cold neutron matter | [['we', 'report', 'the', 'discovery', 'of', 'five', 'new', 'millisecond', 'pulsars', 'in', 'the', 'globular', 'cluster', 'ngc', '6440', 'and', 'three', 'new', 'ones', 'in', 'ngc', '6441', 'each', 'cluster', 'has', 'one', 'previously', 'known', 'pulsar', 'four', 'of', 'the', 'new', 'pulsars', 'are', 'found', 'in', 'binary', 'systems', 'one', 'of', 'the', 'new', 'pulsars', 'psr', 'j17482021b', 'in', 'ngc', '6440', 'is', 'notable', 'for', 'its', 'eccentric', 'e', '057', 'and', 'wide', 'p_b', '205', 'days', 'orbit', 'if', 'the', 'rate', 'of', 'advance', 'of', 'periastron', 'is', 'due', 'solely', 'to', 'general', 'relativity', 'we', 'can', 'estimate', 'of', 'the', 'total', 'mass', 'of', 'this', 'binary', 'system', '292', '020', 'solar', 'masses', 'this', 'would', 'imply', 'an', 'anomalously', 'large', 'mass', 'for', 'this', 'pulsar', 'which', 'could', 'introduce', 'important', 'constraints', 'in', 'the', 'study', 'of', 'the', 'equation', 'of', 'state', 'for', 'cold', 'neutron', 'matter']] | [-0.15475269751702872, 0.11997517886580043, -0.06924554471396165, 0.08867892527327928, -0.14053485113490596, -0.0950772343402426, 0.04923189686945616, 0.33177458217494893, -0.1740278550841583, -0.3561268184079319, 0.05518168028599272, -0.2815171252840605, -0.03735018085984863, 0.29436557317295897, -0.08525722687188377, -0.008237368252594024, 0.13394182869810292, 0.022814282819103353, -0.060083159347040914, -0.25345622716769056, 0.2754062215646363, 0.023683928893520854, 0.07799288254971497, -0.034914005595522046, 0.09707046044457099, -0.055083984865321435, 0.01758691631894336, -0.10909945713594937, -0.12958635705817714, 0.05019622329526987, 0.21820556361260068, 0.1358091915344708, 0.19880588927393794, -0.3177016255581099, -0.1677290991617319, 0.07751864226013581, 0.19951900047385412, 0.027933757084533255, -0.06028567312651465, -0.2914460008888322, 0.08467255242200744, -0.30495432016049695, -0.19131578627424553, 0.0649211422349207, 0.11792696589747301, 0.039873265738909446, -0.1724506208561679, 0.16017894404661706, 0.03057490191502003, 0.019190291030348368, -0.1776523278423179, -0.17482129488494566, 0.04554068742908983, 0.049207065135049514, 0.05587001780692775, 0.084459950026069, 0.09320790918432495, -0.08836260711989151, -0.09885745693762334, 0.4294171429072053, -0.03938633814637159, 0.02027563460999065, 0.2155833328779564, -0.24962031143184146, -0.26567588081836113, 0.10060927724768208, 0.1715936491934535, 0.14268794204864618, -0.23534366735068157, 0.02197319120626387, -0.06810272367383577, 0.23761092982867843, 0.036028573205933355, 0.05415782619229892, 0.3466431782222711, 0.14541517729118753, 0.04372505967815717, 0.09639172641655956, -0.26848499591135955, -0.032542631276843384, -0.17285413451445025, -0.09214097962706772, -0.1008768654627423, 0.0895259196145667, -0.16390152823584928, -0.11857793136583403, 0.35048618669916165, 0.08557392101193595, 0.1607827209473516, -0.028408872775169305, 0.24958723855929243, 0.11515497891869172, 0.058229034292933524, 0.1328556223048104, 0.37422494798835015, 0.1716596126062875, 0.0698225726492894, -0.25343552902022487, 0.08906641624406235, -0.040166387298645884] |
711.2029 | Multifractality and intermediate statistics in quantum maps | We study multifractal properties of wave functions for a one-parameter family
of quantum maps displaying the whole range of spectral statistics intermediate
between integrable and chaotic statistics. We perform extensive numerical
computations and provide analytical arguments showing that the generalized
fractal dimensions are directly related to the parameter of the underlying
classical map, and thus to other properties such as spectral statistics. Our
results could be relevant for Anderson and quantum Hall transitions, where wave
functions also show multifractality.
| nlin.CD cond-mat.mes-hall | we study multifractal properties of wave functions for a oneparameter family of quantum maps displaying the whole range of spectral statistics intermediate between integrable and chaotic statistics we perform extensive numerical computations and provide analytical arguments showing that the generalized fractal dimensions are directly related to the parameter of the underlying classical map and thus to other properties such as spectral statistics our results could be relevant for anderson and quantum hall transitions where wave functions also show multifractality | [['we', 'study', 'multifractal', 'properties', 'of', 'wave', 'functions', 'for', 'a', 'oneparameter', 'family', 'of', 'quantum', 'maps', 'displaying', 'the', 'whole', 'range', 'of', 'spectral', 'statistics', 'intermediate', 'between', 'integrable', 'and', 'chaotic', 'statistics', 'we', 'perform', 'extensive', 'numerical', 'computations', 'and', 'provide', 'analytical', 'arguments', 'showing', 'that', 'the', 'generalized', 'fractal', 'dimensions', 'are', 'directly', 'related', 'to', 'the', 'parameter', 'of', 'the', 'underlying', 'classical', 'map', 'and', 'thus', 'to', 'other', 'properties', 'such', 'as', 'spectral', 'statistics', 'our', 'results', 'could', 'be', 'relevant', 'for', 'anderson', 'and', 'quantum', 'hall', 'transitions', 'where', 'wave', 'functions', 'also', 'show', 'multifractality']] | [-0.07833742610874432, 0.1332458102828057, -0.12406495070568274, 0.1360983708107113, -0.049622704593252534, -0.11987096810996344, 0.022249086282534313, 0.34421874792609786, -0.2829361625628758, -0.25342792385741125, 0.09709480736858529, -0.27691188895532604, -0.24134304735196543, 0.26805254222848746, 0.03636771923261164, 0.13642367048637022, 0.01958632736637764, -0.020370994159241526, -0.1184073324592289, -0.18489630763342343, 0.3320570369427906, 0.026795383273105173, 0.2651141089964894, 0.05361186952294805, 0.04166106649238286, -0.008394287203591836, -0.04378125555459646, 0.02253215082278593, -0.18739292605920427, 0.08432380310436592, 0.2625524166358423, 0.0808365804591228, 0.19748470716508507, -0.36797960890056214, -0.26401895738525105, 0.08256712808167632, 0.15072793877223814, 0.09116119200575955, -0.005894274721983113, -0.317410432556762, 0.07086572125318306, -0.13836894821835374, -0.16538415067605203, -0.15914077514523192, 0.020489977118618125, 0.08637981379811381, -0.27768976948683777, 0.1337167514407789, 0.07724332982744975, 0.07786714233740975, -0.018945631641110617, -0.05556914548660758, -0.03291618129344586, 0.1501501263708725, 0.003937006541848319, -0.05189228830328565, 0.11241407128923302, -0.12029620673790385, -0.16005243015581672, 0.33046081724880216, -0.026082892560317546, -0.21693565198986592, 0.2196521095023785, -0.18238443514196603, -0.15833022682986495, 0.09939767766443282, 0.14498177402994677, 0.06290236009355588, -0.08463194095117005, 0.08783971052322112, -0.056251457579584226, 0.14760710779117728, 0.024574300026686133, 0.11000208284918077, 0.19138011626333376, 0.07997684951730166, 0.024039453909366945, 0.18608062291338073, -0.07423004452610694, -0.16049051830910524, -0.3034588710133788, -0.14938692155565264, -0.22456949673404422, 0.07595246052479997, -0.12066351770514716, -0.22195644319776586, 0.4612726154914008, 0.16542762997958077, 0.20110043904543679, 0.07011256435343736, 0.2065234327382302, 0.1636456265526859, -0.0058700752244154105, 0.03189824790328364, 0.1860838337223741, 0.13057059921984432, 0.07844119473018601, -0.19955377342014374, -0.01973962628789529, 0.08466874628587143] |
711.203 | Exciton Spin Dynamics in Semiconductor Quantum Wells | In this paper we will review Exciton Spin Dynamics in Semiconductor Quantum
Wells. The spin properties of excitons in nanostructures are determined by
their fine structure. We will mainly focus in this review on GaAs and InGaAs
quantum wells which are model systems.
| cond-mat.other | in this paper we will review exciton spin dynamics in semiconductor quantum wells the spin properties of excitons in nanostructures are determined by their fine structure we will mainly focus in this review on gaas and ingaas quantum wells which are model systems | [['in', 'this', 'paper', 'we', 'will', 'review', 'exciton', 'spin', 'dynamics', 'in', 'semiconductor', 'quantum', 'wells', 'the', 'spin', 'properties', 'of', 'excitons', 'in', 'nanostructures', 'are', 'determined', 'by', 'their', 'fine', 'structure', 'we', 'will', 'mainly', 'focus', 'in', 'this', 'review', 'on', 'gaas', 'and', 'ingaas', 'quantum', 'wells', 'which', 'are', 'model', 'systems']] | [-0.1567754479514998, 0.23636730244859708, -0.000833864908578784, 0.03718122897864601, 0.058641991989557135, -0.16904317280061024, -0.026634772976882062, 0.5083071753209414, -0.23657361227412557, -0.2847784793350932, 0.024658674515004076, -0.28537048000928966, -0.1707815929900768, 0.21932893518769983, -0.02086025406065029, 0.042149550259806386, 0.02436131397045629, -0.1132449677300661, -0.07827083712313758, -0.24035311377130794, 0.3369512747280126, 0.029162242461732307, 0.2556425842001688, 0.11191384494304657, 0.007367814663624348, 0.0017344627182844074, 0.1046546951022952, -0.06827315770436165, -0.23238085210323334, 0.15370910608231328, 0.25518425939561323, -0.10472439845677378, 0.24295331741856455, -0.5143384774063908, -0.17804395920748628, -0.014189213037837383, 0.20597746693204308, 0.23245313937699985, -0.1202048847240634, -0.3168391235346018, 0.04200734026989965, -0.12463506085928096, -0.013219914518210083, -0.03968528640824695, -0.04505623415718938, 0.021696159399526065, -0.07927638492249169, 0.04407495825529792, 0.0662203929711913, 0.03228055486498877, -0.06904888659888922, -0.08454432717976594, 0.022662976150249325, 0.05632904223924459, -0.06119513971092136, -0.059152299679036055, 0.2526992028254236, -0.15793261060837743, -0.22285674345614606, 0.37237593971550204, -0.053250005598678145, -0.15166066910971368, 0.12902660128595525, -0.2285185791227187, -0.08213723242975944, 0.030922497763450064, 0.2092805876678159, 0.1461691642396672, -0.18495415852995328, 0.1640000262738985, 0.008641428227514722, 0.17212155015142852, -0.020835770727243533, 0.21084629120521767, 0.32625319930010066, 0.204983021132648, 0.0009560371684127076, 0.113140364616113, -0.08794439354976423, -0.1448026581905609, -0.17571726506359356, -0.22337864352346853, -0.25628011768987013, 0.15174404614020226, 0.06115153860767794, -0.16533126370158308, 0.4683537238905596, 0.15997629544459457, 0.13895889176705548, -0.06007274206955159, 0.22582946977643079, 0.08054199777976719, 0.022719812465745004, -0.0543808659841848, 0.2793719063967813, 0.20300521411889688, 0.11905253159835241, -0.2500784583389759, 0.012334502031376888, -0.015161991492996728] |
711.2031 | Construction of spectral functions for medium nuclei | This article is aimed at improving the description of lepton-nucleus
interactions in the sub-GeV energy range. Approximate spectral functions for
oxygen, calcium, and argon are constructed and used to obtain the electron
cross sections in a given scattering angle. Comparison with a sample of
available experimental data shows satisfactory agreement. Discrepancy between
the presented model and the systematic computations available for oxygen [O.
Benhar et al., Phys. Rev. D 72, 053005 (2005)] is also found to be very small.
Analysis of appropriate kinematical regions leads to the conclusion that the
obtained argon spectral function should describe well neutrino scattering in
the 800-MeV energy region. Several approximations used in the model are
critically reviewed. All the details needed to implement the presented approach
in Monte Carlo simulations are given.
| nucl-th | this article is aimed at improving the description of leptonnucleus interactions in the subgev energy range approximate spectral functions for oxygen calcium and argon are constructed and used to obtain the electron cross sections in a given scattering angle comparison with a sample of available experimental data shows satisfactory agreement discrepancy between the presented model and the systematic computations available for oxygen o benhar et al phys rev d 72 053005 2005 is also found to be very small analysis of appropriate kinematical regions leads to the conclusion that the obtained argon spectral function should describe well neutrino scattering in the 800mev energy region several approximations used in the model are critically reviewed all the details needed to implement the presented approach in monte carlo simulations are given | [['this', 'article', 'is', 'aimed', 'at', 'improving', 'the', 'description', 'of', 'leptonnucleus', 'interactions', 'in', 'the', 'subgev', 'energy', 'range', 'approximate', 'spectral', 'functions', 'for', 'oxygen', 'calcium', 'and', 'argon', 'are', 'constructed', 'and', 'used', 'to', 'obtain', 'the', 'electron', 'cross', 'sections', 'in', 'a', 'given', 'scattering', 'angle', 'comparison', 'with', 'a', 'sample', 'of', 'available', 'experimental', 'data', 'shows', 'satisfactory', 'agreement', 'discrepancy', 'between', 'the', 'presented', 'model', 'and', 'the', 'systematic', 'computations', 'available', 'for', 'oxygen', 'o', 'benhar', 'et', 'al', 'phys', 'rev', 'd', '72', '053005', '2005', 'is', 'also', 'found', 'to', 'be', 'very', 'small', 'analysis', 'of', 'appropriate', 'kinematical', 'regions', 'leads', 'to', 'the', 'conclusion', 'that', 'the', 'obtained', 'argon', 'spectral', 'function', 'should', 'describe', 'well', 'neutrino', 'scattering', 'in', 'the', '800mev', 'energy', 'region', 'several', 'approximations', 'used', 'in', 'the', 'model', 'are', 'critically', 'reviewed', 'all', 'the', 'details', 'needed', 'to', 'implement', 'the', 'presented', 'approach', 'in', 'monte', 'carlo', 'simulations', 'are', 'given']] | [-0.03435708387590398, 0.08594246465151036, -0.05040419876754713, 0.10556201351573691, 0.0007799054340769848, -0.09298145476985531, 0.05126172557033391, 0.4033265693394083, -0.17606957703607068, -0.3659550870606114, 0.005823965667606523, -0.29603623380766264, -0.05918651995145612, 0.21201343594547656, 0.0009793197523177942, 0.07425566960037464, 0.09379445130951584, -0.050159895356508, -0.07297200616264331, -0.23846383218372624, 0.21757923764738415, 0.1591864935610266, 0.2781507287263161, 0.09760772595773377, 0.042462646407777416, 0.01958663649496711, -0.10991995860009439, -0.0165728015736455, -0.1927652458592973, 0.09478366743063643, 0.30750684070563505, 0.077514130333882, 0.154469170962416, -0.41204022321939454, -0.1835463316593733, 0.07019941080112144, 0.12673075418616275, 0.12009989479113192, -0.05716656987178361, -0.2558055321966845, 0.03479400478462349, -0.18363745169277998, -0.1523627388985857, -0.0886718778397947, 0.020091737029216593, 0.024269137296573356, -0.30085980490456143, 0.09131787877944704, -0.03562635290972327, 0.04891423047852835, -0.05407405401846128, -0.1682052979807532, -0.015555834939097247, 0.055935708477923146, 0.016854296481762995, 0.05467631156548917, 0.12112735847698614, -0.0552848862236484, -0.04929626327274101, 0.36030222023911185, -0.04081966674938384, -0.15856870696953837, 0.2168983653010357, -0.14582787111165033, -0.10821309818568388, 0.1732839898886307, 0.13810710178776867, 0.1284289900361309, -0.19313606363444014, 0.10553273871875486, -0.03925828758483043, 0.16294072640852797, 0.042393991167450115, 0.01625762051584648, 0.13675155404896017, 0.17505268538222898, -0.04241463659508597, 0.06900248997974107, -0.13216689218478722, -0.09044239651790584, -0.3447238805487619, -0.10551652621241316, -0.1475202433168075, -0.002875319843749619, -0.027097538189009934, -0.11581177161017892, 0.3501295123955176, 0.16078213913484463, 0.23106260551139712, -0.00702495952802045, 0.2623714738348055, 0.0881504995142302, 0.009432229113632016, 0.07303716255617994, 0.2858598939963572, 0.15984216166312792, 0.11946634693248641, -0.2369892154677054, 0.059204131863745194, 0.051826898807554415] |
711.2032 | A Constrained Nevanlinna-Pick Interpolation Problem | We obtain necessary and sufficient conditions for Nevanlinna-Pick
interpolation on the unit disk with the additional restriction that all
analytic interpolating functions satisfy $f'(0)=0.$ Alternatively, these
results can be interpreted as interpolation results for $H^{\infty}(V),$ where
$V$ is the intersection of the bidisk with an algebraic variety. We use an
analysis of C*-envelopes to show that these same conditions do not suffice for
matrix interpolation.
| math.OA | we obtain necessary and sufficient conditions for nevanlinnapick interpolation on the unit disk with the additional restriction that all analytic interpolating functions satisfy f00 alternatively these results can be interpreted as interpolation results for hinftyv where v is the intersection of the bidisk with an algebraic variety we use an analysis of cenvelopes to show that these same conditions do not suffice for matrix interpolation | [['we', 'obtain', 'necessary', 'and', 'sufficient', 'conditions', 'for', 'nevanlinnapick', 'interpolation', 'on', 'the', 'unit', 'disk', 'with', 'the', 'additional', 'restriction', 'that', 'all', 'analytic', 'interpolating', 'functions', 'satisfy', 'f00', 'alternatively', 'these', 'results', 'can', 'be', 'interpreted', 'as', 'interpolation', 'results', 'for', 'hinftyv', 'where', 'v', 'is', 'the', 'intersection', 'of', 'the', 'bidisk', 'with', 'an', 'algebraic', 'variety', 'we', 'use', 'an', 'analysis', 'of', 'cenvelopes', 'to', 'show', 'that', 'these', 'same', 'conditions', 'do', 'not', 'suffice', 'for', 'matrix', 'interpolation']] | [-0.0933874178736005, 0.01056649373322216, -0.0932239535759436, 0.10399778367172985, -0.10702602046512766, -0.1234235435113078, -0.003351563002070179, 0.41992169473087415, -0.28226469294168055, -0.22483119321987033, 0.17606267012888566, -0.1955385808541905, -0.1507094911457898, 0.22591836213723582, -0.09501543799706269, 0.08636247542744968, 0.07173804175545229, 0.014004688899149187, -0.13461214653943898, -0.2740113008476328, 0.3688965482870117, -0.05683904433681164, 0.17719228332134662, 0.10177992756507592, 0.06432385902735405, 0.01450827872758964, 0.010649405328877037, -0.015298101003281772, -0.19211640033722688, 0.09594389697667793, 0.2479129490966443, 0.16917773687600857, 0.20411048887035577, -0.4777490874112118, -0.1490562122053234, 0.1807672872528201, 0.15004081368533662, 0.0023879538639448583, -0.029576126698884764, -0.19350502238376066, 0.12773850802477682, -0.09610824170522392, -0.14505607780301943, -0.14419545369855769, -0.012170536334451754, 0.08442113543787855, -0.3920908111758763, 0.01790784258992062, 0.10566070803815819, 0.07442795965107507, -0.12373827902774792, -0.13089731718173425, -0.03888926067884313, 0.1279884229588788, -0.03941213008147315, 0.055852272460469976, 0.04903703139279969, -0.06385204603429884, -0.07613308998406865, 0.35115775022131857, -0.06074733432615176, -0.2849165587686002, 0.19692348501848755, -0.16591960612277035, -0.15113945314078592, 0.06181911717430921, 0.10684348959512135, 0.0938128452219189, -0.09459846006939188, 0.11598238546775974, -0.12120858795788081, 0.1362504943390377, 0.10591036253026687, 0.025703798924951116, 0.12735696135496255, 0.0015793271450093016, 0.13241970184390084, 0.10848036483184842, -0.019693916055985028, -0.047950406376912724, -0.42720241949427873, -0.16754581803252222, -0.17729349736146105, 0.07561587854274876, -0.13929740519938605, -0.1777437609343906, 0.32512903268798254, 0.13175335266714683, 0.24392169342172565, 0.08079634897148935, 0.23466823631315492, 0.16223261674986134, 0.08743796567432582, 0.06924999647162622, 0.16332567916833796, 0.1270767099049408, 0.022613056418776978, -0.13962176137283677, 0.03553760772047099, 0.13007648957864149] |
711.2033 | Transverse geometry and physical observers | It is proposed that the mathematical formalism that is most appropriate for
the study of spatially non-integrable cosmological models is the transverse
geometry of a one-dimensional foliation (congruence) defined by a physical
observer. By that means, one can discuss the geometry of space, as viewed by
that observer, without the necessity of introducing a complementary sub-bundle
to the line bundle of the observer or a codimension-one foliation transverse to
the foliation of the observer. The concept of groups of transverse isometries
acting on such a spacetime and the relationship of transverse geometry to
spacetime threadings (1+3 decompositions) is also discussed.
| gr-qc | it is proposed that the mathematical formalism that is most appropriate for the study of spatially nonintegrable cosmological models is the transverse geometry of a onedimensional foliation congruence defined by a physical observer by that means one can discuss the geometry of space as viewed by that observer without the necessity of introducing a complementary subbundle to the line bundle of the observer or a codimensionone foliation transverse to the foliation of the observer the concept of groups of transverse isometries acting on such a spacetime and the relationship of transverse geometry to spacetime threadings 13 decompositions is also discussed | [['it', 'is', 'proposed', 'that', 'the', 'mathematical', 'formalism', 'that', 'is', 'most', 'appropriate', 'for', 'the', 'study', 'of', 'spatially', 'nonintegrable', 'cosmological', 'models', 'is', 'the', 'transverse', 'geometry', 'of', 'a', 'onedimensional', 'foliation', 'congruence', 'defined', 'by', 'a', 'physical', 'observer', 'by', 'that', 'means', 'one', 'can', 'discuss', 'the', 'geometry', 'of', 'space', 'as', 'viewed', 'by', 'that', 'observer', 'without', 'the', 'necessity', 'of', 'introducing', 'a', 'complementary', 'subbundle', 'to', 'the', 'line', 'bundle', 'of', 'the', 'observer', 'or', 'a', 'codimensionone', 'foliation', 'transverse', 'to', 'the', 'foliation', 'of', 'the', 'observer', 'the', 'concept', 'of', 'groups', 'of', 'transverse', 'isometries', 'acting', 'on', 'such', 'a', 'spacetime', 'and', 'the', 'relationship', 'of', 'transverse', 'geometry', 'to', 'spacetime', 'threadings', '13', 'decompositions', 'is', 'also', 'discussed']] | [-0.19640848578797887, 0.11826129358960316, -0.12213180506136269, 0.072767747011967, -0.13026525668799877, -0.14003164053428918, -0.06620515366084874, 0.36737725985236463, -0.2579987587186042, -0.23787402346730233, 0.10497131095267832, -0.23068971095141022, -0.11816694908076897, 0.17277316005143803, -0.06585153590422124, 0.01953044140362181, 0.015335293738171458, 0.05794887299183756, -0.08327019211137668, -0.16701112507027574, 0.44772158813895657, 0.09617544025182724, 0.25075253016781063, 0.014902567816898226, 0.17676500913687052, 0.053122632312588396, -0.018995868298225103, 0.08891146166686667, -0.10935152303572977, 0.09329113164916635, 0.20827820148948376, 0.12577185567002744, 0.22523815738037228, -0.34470622092485426, -0.23226536859758198, 0.09371983756311238, 0.14366731968708335, 0.08082004838157446, -0.01063281700364314, -0.3237516891211271, 0.03106757187284529, -0.11095144599676132, -0.21466135689523072, -0.032864965862827375, 0.025425853789784014, -0.0335854819486849, -0.1551996199740097, 0.03292763718141942, 0.11247355990111828, 0.08640630762092769, -0.0599166920594871, 0.0053613601624965665, -0.09943728985730559, 0.06600683509139343, 0.07593664929860097, 0.07774094351334497, 0.17708253397606313, -0.05865861786529422, -0.14656516534276307, 0.38437968714162707, -0.05779724265448749, -0.31355230152606967, 0.12544766913284547, -0.15931357794208453, -0.08867275541648269, 0.09720909132156522, 0.14209394152625465, 0.12266007042489946, -0.12124973981641234, 0.12597185691527557, -0.059358589430339635, 0.10322848294134018, 0.08460906733758748, 0.011436898931860924, 0.2068005532771349, 0.1197958173416555, 0.08402419528283644, 0.11713051489088684, -0.04669742994243279, -0.09217099380679429, -0.39539709556847813, -0.21453945260935142, -0.15099065139424056, 0.11904026160016656, -0.1453065821841301, -0.15922479575732723, 0.40235894643235953, 0.07931716254213825, 0.2234738784795627, 0.004705536544788629, 0.2773824474099092, 0.05291472686338238, 0.06082719222642481, 0.06040096483658999, 0.2432608623150736, 0.17888058359501882, 0.06695513756712898, -0.1827918302640319, -0.01120876903180033, 0.12449886778136715] |
711.2034 | Dynamic load-balancing on multi-FPGA systems: a case study | In this case study, we investigate the impact of workload balance on the
performance of multi-FPGA codes. We start with an application in which two
distinct kernels run in parallel on two SRC-6 MAP processors. We observe that
one of the MAP processors is idle 18% of the time while the other processor is
fully utilized. We investigate a task redistribution schema which serializes
the execution of the two kernels, yet parallelizes execution of each individual
kernel by spreading the workload between two MAP processors. This
implementation results in a near 100% utilization of both MAP processors and
the overall application performance is improved by 9%.
| astro-ph | in this case study we investigate the impact of workload balance on the performance of multifpga codes we start with an application in which two distinct kernels run in parallel on two src6 map processors we observe that one of the map processors is idle 18 of the time while the other processor is fully utilized we investigate a task redistribution schema which serializes the execution of the two kernels yet parallelizes execution of each individual kernel by spreading the workload between two map processors this implementation results in a near 100 utilization of both map processors and the overall application performance is improved by 9 | [['in', 'this', 'case', 'study', 'we', 'investigate', 'the', 'impact', 'of', 'workload', 'balance', 'on', 'the', 'performance', 'of', 'multifpga', 'codes', 'we', 'start', 'with', 'an', 'application', 'in', 'which', 'two', 'distinct', 'kernels', 'run', 'in', 'parallel', 'on', 'two', 'src6', 'map', 'processors', 'we', 'observe', 'that', 'one', 'of', 'the', 'map', 'processors', 'is', 'idle', '18', 'of', 'the', 'time', 'while', 'the', 'other', 'processor', 'is', 'fully', 'utilized', 'we', 'investigate', 'a', 'task', 'redistribution', 'schema', 'which', 'serializes', 'the', 'execution', 'of', 'the', 'two', 'kernels', 'yet', 'parallelizes', 'execution', 'of', 'each', 'individual', 'kernel', 'by', 'spreading', 'the', 'workload', 'between', 'two', 'map', 'processors', 'this', 'implementation', 'results', 'in', 'a', 'near', '100', 'utilization', 'of', 'both', 'map', 'processors', 'and', 'the', 'overall', 'application', 'performance', 'is', 'improved', 'by', '9']] | [-0.1938357813274846, 0.034929371543162585, -0.06731651180710357, 0.02120040664829923, -0.016531005376376785, -0.13506010413850442, 0.07814614016276139, 0.4305255100704156, -0.27442875035250414, -0.3491270434505378, 0.1122598572087904, -0.25758310821122277, -0.10614174709637435, 0.20913424813905016, -0.04938770393178297, 0.054009201193156726, 0.12453817921833923, 0.03867502638604492, -0.0596669306687545, -0.298134075352349, 0.2882609574052577, 0.05162426036146756, 0.28878696570889306, 0.04551405866137569, 0.07913549121943876, -0.04518109971272329, -0.03568774945765304, -0.04700183916765337, -0.06404671904245053, 0.10993531654597834, 0.23301910870493606, 0.16397843737370119, 0.2981459835293488, -0.43784045120880294, -0.13135014437676334, 0.09357907582754986, 0.11776199887614124, 0.03263414956074065, -0.009648904045416903, -0.2167735250214509, 0.07978317962484792, -0.1851647052501973, -0.013390143066107366, -0.0444409251302624, -0.01185247388919099, 0.030783280637898806, -0.22195154119533703, -0.016408539408495508, 0.06865115592014402, 0.056574077578261495, -0.028873575750577193, -0.07212429345012285, 0.0560028452354555, 0.16106621256823508, -0.022365259429744374, 0.03337592381733255, 0.15266530153950533, -0.1261728440692353, -0.17224012662728244, 0.36202383396000815, -0.06187787733506411, -0.2019355182822507, 0.18239649787294462, -0.10332884866959201, -0.15181630509547317, 0.078410699730739, 0.2130678110361959, 0.07084396367785163, -0.16367410788258824, 0.05972093884562268, 0.009349167776795534, 0.1744604642282446, 0.06962939906113136, -0.00040158854636292043, 0.14358211952584007, 0.2200162185696312, 0.09389693958935542, 0.20358865724511604, -0.0910187553963624, -0.1194820048717352, -0.24511763663926664, -0.19684096494277653, -0.1913985962388464, -0.0021021184511482716, -0.1158367611081373, -0.11909403924185497, 0.4433605037092303, 0.1809490482779578, 0.2122089781332761, 0.09631364911015575, 0.34547593480405897, 0.06615488901913452, 0.10304622978450285, 0.17988323158743486, 0.13640639193293352, 0.027111666371078733, 0.125778378652355, -0.26711654793381545, 0.050527246026411794, 0.0051708884574719165] |
711.2035 | Kac-Moody Spectrum of (Half-)Maximal Supergravities | We establish the correspondence between, on one side, the possible gaugings
and massive deformations of half-maximal supergravity coupled to vector
multiplets and, on the other side, certain generators of the associated very
extended Kac-Moody algebras. The difference between generators associated to
gaugings and to massive deformations is pointed out. Furthermore, we argue that
another set of generators are related to the so-called quadratic constraints of
the embedding tensor. Special emphasis is placed on a truncation of the
Kac-Moody algebra that is related to the bosonic gauge transformations of
supergravity. We give a separate discussion of this truncation when non-zero
deformations are present. The new insights are also illustrated in the context
of maximal supergravity.
| hep-th | we establish the correspondence between on one side the possible gaugings and massive deformations of halfmaximal supergravity coupled to vector multiplets and on the other side certain generators of the associated very extended kacmoody algebras the difference between generators associated to gaugings and to massive deformations is pointed out furthermore we argue that another set of generators are related to the socalled quadratic constraints of the embedding tensor special emphasis is placed on a truncation of the kacmoody algebra that is related to the bosonic gauge transformations of supergravity we give a separate discussion of this truncation when nonzero deformations are present the new insights are also illustrated in the context of maximal supergravity | [['we', 'establish', 'the', 'correspondence', 'between', 'on', 'one', 'side', 'the', 'possible', 'gaugings', 'and', 'massive', 'deformations', 'of', 'halfmaximal', 'supergravity', 'coupled', 'to', 'vector', 'multiplets', 'and', 'on', 'the', 'other', 'side', 'certain', 'generators', 'of', 'the', 'associated', 'very', 'extended', 'kacmoody', 'algebras', 'the', 'difference', 'between', 'generators', 'associated', 'to', 'gaugings', 'and', 'to', 'massive', 'deformations', 'is', 'pointed', 'out', 'furthermore', 'we', 'argue', 'that', 'another', 'set', 'of', 'generators', 'are', 'related', 'to', 'the', 'socalled', 'quadratic', 'constraints', 'of', 'the', 'embedding', 'tensor', 'special', 'emphasis', 'is', 'placed', 'on', 'a', 'truncation', 'of', 'the', 'kacmoody', 'algebra', 'that', 'is', 'related', 'to', 'the', 'bosonic', 'gauge', 'transformations', 'of', 'supergravity', 'we', 'give', 'a', 'separate', 'discussion', 'of', 'this', 'truncation', 'when', 'nonzero', 'deformations', 'are', 'present', 'the', 'new', 'insights', 'are', 'also', 'illustrated', 'in', 'the', 'context', 'of', 'maximal', 'supergravity']] | [-0.17949255085305163, 0.12154067116544436, -0.02185649584504988, 0.09140812696505077, -0.1528997369796822, -0.14934395904767148, -0.027047987596393284, 0.33219640250644533, -0.23349781739607192, -0.2275438727320809, 0.15309605871944018, -0.2936323113890626, -0.1722951855575829, 0.1390157276846207, -0.11327597988246564, -0.04383660095596784, 0.023802560170001368, 0.10810096614193498, -0.14812498027918322, -0.293679326298859, 0.38372011023589914, 0.019037690101469166, 0.2696428669600241, 0.015187788207345364, 0.12414013745524642, -0.028707622105190365, -0.05319609921507276, -0.024472796488880066, -0.10881083151961272, 0.1657043987182541, 0.24923749105481988, 0.07458713884759498, 0.12702092897604433, -0.43113580672887336, -0.1397021757888101, 0.11258875206112862, 0.1315630711288306, 0.1094318482077174, -0.027868338704329768, -0.27248715857664746, 0.06031171348570895, -0.1847282104733351, -0.1433637194517232, -0.08649702171648019, 0.021675364065327142, -0.04934525036400086, -0.23679543360700145, 0.04678028119240863, 0.04144357229795372, 0.055102984034946484, -0.07611154456900661, -0.09438722538598404, -0.10822219785768539, 0.06522764693133802, 0.10531097750400047, 6.545639980845807e-05, 0.09540320491303869, -0.15427698187832312, -0.1377493796763909, 0.3585436029784512, 0.00712986999771378, -0.24479530247238776, 0.1912570592677711, -0.14396516957500002, -0.18991612736544197, 0.06732962574307366, 0.13650574790019737, 0.11794095929597684, -0.11890939537197323, 0.1747686750068648, -0.0536190633694723, 0.06752904968564971, 0.07546890007021527, 0.05319385597351612, 0.233410608219473, 0.0922683568879668, 0.05897257652944526, 0.18180690607793318, 0.017695545379211308, -0.12324281206013422, -0.4477692757520759, -0.1263104256052573, -0.07627803383787211, 0.0766176605676791, -0.12742083449809702, -0.14994548636962446, 0.3937778830887717, 0.12918836297875827, 0.1902075249567963, 0.04757855801941141, 0.1696456082639072, 0.10807970646687624, 0.1433623287205895, 0.009884367374245796, 0.23174870378141732, 0.21606820674711152, -0.034793417043003594, -0.24187081002450564, -0.13247455244683742, 0.1525075507039825] |
711.2036 | Solvmanifolds and noncommutative tori with real multiplication | We prove that the Shimizu L-function of a real quadratic field is obtained
from a (Lorentzian) spectral triple on a noncommutative torus with real
multiplication, as an adiabatic limit of the Dirac operator on a 3-dimensional
solvmanifold. The Dirac operator on this 3-dimensional geometry gives, via the
Connes-Landi isospectral deformations, a spectral triple for the noncommutative
tori obtained by deforming the fiber tori to noncommutative spaces. The
3-dimensional solvmanifold is the homotopy quotient in the sense of
Baum--Connes of the noncommutative space obtained as the crossed product of the
noncommutative torus by the action of the units of the real quadratic field.
This noncommutative space is identified with the twisted group C*-algebra of
the fundamental group of the 3-manifold. The twisting can be interpreted as the
cocycle arising from a magnetic field, as in the theory of the quantum Hall
effect. We prove a twisted index theorem that computes the range of the trace
on the K-theory of this noncommutative space and gives an estimate on the gaps
in the spectrum of the associated Harper operator.
| math.QA | we prove that the shimizu lfunction of a real quadratic field is obtained from a lorentzian spectral triple on a noncommutative torus with real multiplication as an adiabatic limit of the dirac operator on a 3dimensional solvmanifold the dirac operator on this 3dimensional geometry gives via the conneslandi isospectral deformations a spectral triple for the noncommutative tori obtained by deforming the fiber tori to noncommutative spaces the 3dimensional solvmanifold is the homotopy quotient in the sense of baumconnes of the noncommutative space obtained as the crossed product of the noncommutative torus by the action of the units of the real quadratic field this noncommutative space is identified with the twisted group calgebra of the fundamental group of the 3manifold the twisting can be interpreted as the cocycle arising from a magnetic field as in the theory of the quantum hall effect we prove a twisted index theorem that computes the range of the trace on the ktheory of this noncommutative space and gives an estimate on the gaps in the spectrum of the associated harper operator | [['we', 'prove', 'that', 'the', 'shimizu', 'lfunction', 'of', 'a', 'real', 'quadratic', 'field', 'is', 'obtained', 'from', 'a', 'lorentzian', 'spectral', 'triple', 'on', 'a', 'noncommutative', 'torus', 'with', 'real', 'multiplication', 'as', 'an', 'adiabatic', 'limit', 'of', 'the', 'dirac', 'operator', 'on', 'a', '3dimensional', 'solvmanifold', 'the', 'dirac', 'operator', 'on', 'this', '3dimensional', 'geometry', 'gives', 'via', 'the', 'conneslandi', 'isospectral', 'deformations', 'a', 'spectral', 'triple', 'for', 'the', 'noncommutative', 'tori', 'obtained', 'by', 'deforming', 'the', 'fiber', 'tori', 'to', 'noncommutative', 'spaces', 'the', '3dimensional', 'solvmanifold', 'is', 'the', 'homotopy', 'quotient', 'in', 'the', 'sense', 'of', 'baumconnes', 'of', 'the', 'noncommutative', 'space', 'obtained', 'as', 'the', 'crossed', 'product', 'of', 'the', 'noncommutative', 'torus', 'by', 'the', 'action', 'of', 'the', 'units', 'of', 'the', 'real', 'quadratic', 'field', 'this', 'noncommutative', 'space', 'is', 'identified', 'with', 'the', 'twisted', 'group', 'calgebra', 'of', 'the', 'fundamental', 'group', 'of', 'the', '3manifold', 'the', 'twisting', 'can', 'be', 'interpreted', 'as', 'the', 'cocycle', 'arising', 'from', 'a', 'magnetic', 'field', 'as', 'in', 'the', 'theory', 'of', 'the', 'quantum', 'hall', 'effect', 'we', 'prove', 'a', 'twisted', 'index', 'theorem', 'that', 'computes', 'the', 'range', 'of', 'the', 'trace', 'on', 'the', 'ktheory', 'of', 'this', 'noncommutative', 'space', 'and', 'gives', 'an', 'estimate', 'on', 'the', 'gaps', 'in', 'the', 'spectrum', 'of', 'the', 'associated', 'harper', 'operator']] | [-0.19213741949748842, 0.10033850878922253, -0.09596265961987559, 0.06607805494621227, -0.06933177501725202, -0.07720705805960196, -0.04500504086040151, 0.3158352860799906, -0.3289789800659161, -0.22571939513727557, 0.10958571656308115, -0.21301602121250404, -0.1721923119135185, 0.23230869678081945, -0.13941936734375882, -0.007863943102579056, 0.030628548993263394, 0.10970017068955878, -0.1384203657111026, -0.20574211363617162, 0.4646029645280743, 0.025380021463206504, 0.18602590480467865, 0.03296762927625836, 0.10786152915865056, 0.04785103620749644, -0.013759480691409077, -0.015999061208772633, -0.1281628648474163, 0.13754894353174182, 0.21407133285802873, 0.003214335629309062, 0.16162093756450055, -0.35605404182040895, -0.17994853562082758, 0.12443383569850332, 0.10470907010180368, -0.013105425380424342, -0.02340564707794163, -0.32786027783930133, 0.03784846197363963, -0.182286826655565, -0.16011703381611203, -0.05314967113504694, 0.006254966817240612, -0.034463128715287894, -0.21833730618527625, 0.008843734627589583, 0.0847295063748871, 0.09511225050399927, -0.09520794835936447, -0.03439472416225313, -0.0802969760261476, 0.10562866894708184, 0.0018158012866148386, 0.04590115732174705, 0.13221573532791808, -0.06998765649173451, -0.1589863305145462, 0.3987589347472584, -0.09262032333803787, -0.2208222716369412, 0.0770941847586073, -0.18956496180246837, -0.13237599248267626, 0.1366170900080099, 0.06874554383102804, 0.14399590996750208, -0.0010721687259237197, 0.23792431012969412, -0.14914877361363985, 0.0807368522972948, 0.05859947170194408, -0.003377137594559992, 0.1683736073265953, 0.054764661900910803, 0.0956624345166016, 0.16521119236594214, -0.03263843854239729, -0.10140463441910635, -0.3533966514408927, -0.22339183327593756, -0.1854592984203588, 0.18975132579296108, -0.15784254779671095, -0.22986422542651946, 0.4225593103672674, 0.038301166428771634, 0.2086943997234233, 0.0526103319157714, 0.23319834164894102, 0.15385331319570963, 0.08857513590059667, 0.011791280538628516, 0.19864981881189372, 0.23910691547048787, 0.04693381558436985, -0.20078749346165833, -0.11190776722452772, 0.20848062656428243] |
711.2037 | Splitting for Rare Event Simulation: A Large Deviation Approach to
Design and Analysis | Particle splitting methods are considered for the estimation of rare events.
The probability of interest is that a Markov process first enters a set $B$
before another set $A$, and it is assumed that this probability satisfies a
large deviation scaling. A notion of subsolution is defined for the related
calculus of variations problem, and two main results are proved under mild
conditions. The first is that the number of particles generated by the
algorithm grows subexponentially if and only if a certain scalar multiple of
the importance function is a subsolution. The second is that, under the same
condition, the variance of the algorithm is characterized (asymptotically) in
terms of the subsolution. The design of asymptotically optimal schemes is
discussed, and numerical examples are presented.
| math.PR | particle splitting methods are considered for the estimation of rare events the probability of interest is that a markov process first enters a set b before another set a and it is assumed that this probability satisfies a large deviation scaling a notion of subsolution is defined for the related calculus of variations problem and two main results are proved under mild conditions the first is that the number of particles generated by the algorithm grows subexponentially if and only if a certain scalar multiple of the importance function is a subsolution the second is that under the same condition the variance of the algorithm is characterized asymptotically in terms of the subsolution the design of asymptotically optimal schemes is discussed and numerical examples are presented | [['particle', 'splitting', 'methods', 'are', 'considered', 'for', 'the', 'estimation', 'of', 'rare', 'events', 'the', 'probability', 'of', 'interest', 'is', 'that', 'a', 'markov', 'process', 'first', 'enters', 'a', 'set', 'b', 'before', 'another', 'set', 'a', 'and', 'it', 'is', 'assumed', 'that', 'this', 'probability', 'satisfies', 'a', 'large', 'deviation', 'scaling', 'a', 'notion', 'of', 'subsolution', 'is', 'defined', 'for', 'the', 'related', 'calculus', 'of', 'variations', 'problem', 'and', 'two', 'main', 'results', 'are', 'proved', 'under', 'mild', 'conditions', 'the', 'first', 'is', 'that', 'the', 'number', 'of', 'particles', 'generated', 'by', 'the', 'algorithm', 'grows', 'subexponentially', 'if', 'and', 'only', 'if', 'a', 'certain', 'scalar', 'multiple', 'of', 'the', 'importance', 'function', 'is', 'a', 'subsolution', 'the', 'second', 'is', 'that', 'under', 'the', 'same', 'condition', 'the', 'variance', 'of', 'the', 'algorithm', 'is', 'characterized', 'asymptotically', 'in', 'terms', 'of', 'the', 'subsolution', 'the', 'design', 'of', 'asymptotically', 'optimal', 'schemes', 'is', 'discussed', 'and', 'numerical', 'examples', 'are', 'presented']] | [-0.16510450467467308, 0.14763406530717418, -0.08554445807304648, 0.08895459567205734, -0.038683651700719364, -0.12859205054932288, 0.02846735165295531, 0.3221093151138149, -0.274306823536458, -0.23365374274611, 0.1413985362178498, -0.25054765410632607, -0.15768615987580564, 0.211508498066068, -0.08675816896859379, 0.07241397399070953, 0.07957703908831472, 0.09176620725719702, -0.04328903298000879, -0.2638617618395651, 0.3374933560474938, 0.02207612772546117, 0.274514568733081, 0.033760268155241475, 0.15415487826768576, -0.024220298894400163, -0.014649379935618195, 0.05875507435421386, -0.11341523813635354, 0.06585920558381264, 0.18434452106492474, 0.16046605742950407, 0.3388141736550818, -0.31563591132945723, -0.1609941489388427, 0.1428407684064633, 0.11106671949124171, 0.06797371783648573, -0.056093368904724245, -0.2465676831318036, 0.16230588095513956, -0.12334107410251385, -0.13586675579703988, -0.021517723473528073, 0.026184110377456934, 0.045600901609138836, -0.35351159677855554, 0.0498769968408086, 0.08222734098810525, -0.004716710562610792, -0.04252659573057105, -0.09161013074677497, -0.02509009959508798, 0.09233622835387313, 0.09574355791846756, 0.017761820672257317, 0.10931983774912263, -0.09981098957544578, -0.09079657083410504, 0.3769133443692847, -0.045502074239295094, -0.2589753460405128, 0.15231467929062625, -0.13084206933761755, -0.13777770501531897, 0.15364974848963026, 0.1027031488465293, 0.16075289266420498, -0.15604406790364356, 0.1341144783581267, -0.07622640898510341, 0.13117497430611696, 0.055784227679454026, 0.012718171738679446, 0.1272797996680888, 0.17743371996200746, 0.1314908610582943, 0.1427837762822737, -0.05989634540552894, -0.10776001728686785, -0.3820054883785021, -0.16289407401419584, -0.22986021892921554, 0.009909598040394485, -0.09957012667880571, -0.1728945571840519, 0.3595779599799287, 0.10466037988884463, 0.18385281210528717, 0.0907161767771911, 0.2694963099405406, 0.17074302549031378, 0.0038811428687675663, 0.08145184872213691, 0.19772513462821878, 0.14308148162395118, 0.0567848730743641, -0.18584572960690054, 0.1325679874594604, 0.09030386688749469] |
711.2038 | Astrophysical Bounds on the Photon Charge and Magnetic Moment | If the photon possessed an electric charge or a magnetic moment, light waves
propagating through magnetic fields would acquire new quantum mechanical
phases. For a charged photon, this is an Aharonov-Bohm phase, and the fact that
we can resolve distant galaxies using radio interferometry indicates that this
phase must be small. This in turn constrains the photon charge to be smaller
that 10^(-32) e if all photons have the same charge and smaller than 10^(-46) e
if there are both positively and negatively charged photons. The best bound on
the magnetic moment comes from the observed absence of wavelength-independent
photon birefringence. Birefringence measurements, which compare the relative
phases of right- and left-circularly polarized waves, restrict the magnetic
moment to be less than 10^(-24) e cm. This is just a few orders of magnetude
weaker than the experimental bounds on the electron and neutron electric dipole
moments.
| hep-th | if the photon possessed an electric charge or a magnetic moment light waves propagating through magnetic fields would acquire new quantum mechanical phases for a charged photon this is an aharonovbohm phase and the fact that we can resolve distant galaxies using radio interferometry indicates that this phase must be small this in turn constrains the photon charge to be smaller that 1032 e if all photons have the same charge and smaller than 1046 e if there are both positively and negatively charged photons the best bound on the magnetic moment comes from the observed absence of wavelengthindependent photon birefringence birefringence measurements which compare the relative phases of right and leftcircularly polarized waves restrict the magnetic moment to be less than 1024 e cm this is just a few orders of magnetude weaker than the experimental bounds on the electron and neutron electric dipole moments | [['if', 'the', 'photon', 'possessed', 'an', 'electric', 'charge', 'or', 'a', 'magnetic', 'moment', 'light', 'waves', 'propagating', 'through', 'magnetic', 'fields', 'would', 'acquire', 'new', 'quantum', 'mechanical', 'phases', 'for', 'a', 'charged', 'photon', 'this', 'is', 'an', 'aharonovbohm', 'phase', 'and', 'the', 'fact', 'that', 'we', 'can', 'resolve', 'distant', 'galaxies', 'using', 'radio', 'interferometry', 'indicates', 'that', 'this', 'phase', 'must', 'be', 'small', 'this', 'in', 'turn', 'constrains', 'the', 'photon', 'charge', 'to', 'be', 'smaller', 'that', '1032', 'e', 'if', 'all', 'photons', 'have', 'the', 'same', 'charge', 'and', 'smaller', 'than', '1046', 'e', 'if', 'there', 'are', 'both', 'positively', 'and', 'negatively', 'charged', 'photons', 'the', 'best', 'bound', 'on', 'the', 'magnetic', 'moment', 'comes', 'from', 'the', 'observed', 'absence', 'of', 'wavelengthindependent', 'photon', 'birefringence', 'birefringence', 'measurements', 'which', 'compare', 'the', 'relative', 'phases', 'of', 'right', 'and', 'leftcircularly', 'polarized', 'waves', 'restrict', 'the', 'magnetic', 'moment', 'to', 'be', 'less', 'than', '1024', 'e', 'cm', 'this', 'is', 'just', 'a', 'few', 'orders', 'of', 'magnetude', 'weaker', 'than', 'the', 'experimental', 'bounds', 'on', 'the', 'electron', 'and', 'neutron', 'electric', 'dipole', 'moments']] | [-0.1454129820914361, 0.2924752721516817, -0.02463142821757958, 0.07231688917421832, -0.06411015912569289, -0.12128788372180585, 0.01711291054641057, 0.37414819724087056, -0.19468535236243545, -0.32749844224288543, 0.006923304057423154, -0.33542075802828986, -0.0025129005585893473, 0.20796509696780865, 0.021864352285348138, -0.056686973183191026, 0.0033514762441788255, 0.021853875150454456, -0.051814734950212056, -0.18657442099527166, 0.2595291636980556, 0.06321245199470812, 0.2630108838965153, 0.08766605927576793, 0.08260620805466998, -0.010056704497928249, 0.03294595829692894, 0.008358608760292931, -0.06096720684812493, 0.06573143812570849, 0.15682590689092618, 0.031578858126083326, 0.15638836490889563, -0.46818078409495023, -0.15722153887377474, 0.17455851767725986, 0.13942804527147834, 0.09325716187454888, -0.05320844011028008, -0.29578212071210147, 0.07931909350325064, -0.13118919344811603, -0.11016485567108311, -0.04256280257270254, 0.04288692325674768, 0.011615087124037332, -0.26766763299318225, 0.08097673652950546, 0.050384587919237174, 0.013395360693463991, -0.061885129401845665, -0.0892398893190869, -0.03128796739118366, 0.028517472870840596, 0.0792388688002167, 0.10160818374876318, 0.18190620408618244, -0.12276557109615734, -0.10723230029809577, 0.3652012544587768, -0.059056989190164666, -0.14223869626474533, 0.12586300475261944, -0.264489878177972, -0.07506937910642089, 0.1948684171982238, 0.129466093511417, 0.1594697509731712, -0.09978529066489689, 0.03297802714253615, -0.04688647273418108, 0.24362257917507968, 0.10142157392833254, 0.09311271597920306, 0.3007146497096481, 0.08180364010662868, 0.07986034854829055, 0.10157391689798057, -0.1395622742619237, 0.00854640902855016, -0.27759371881276884, -0.14373905000092205, -0.17664184368713276, 0.12881851278351827, -0.09185315529155497, -0.11800120997098114, 0.3671588159198391, 0.1384478214212918, 0.16268826332585565, -0.053854598587475204, 0.33545045381861516, 0.14584079369388778, 0.06688983732320625, 0.06952322546938627, 0.35333600147498834, 0.17709698707892976, 0.08717754457691877, -0.21854786235550097, 0.04272041762054994, -0.02325388643537359] |
711.2039 | Fine Grid Asteroseismology of R548 and G117-B15A | We now have a good measurement of the cooling rate of G117-B15A. In the near
future, we will have equally well determined cooling rates for other pulsating
white dwarfs, including R548. The ability to measure their cooling rates offers
us a unique way to study weakly interacting particles that would contribute to
their cooling. Working toward that goal, we perform a careful
asteroseismological analysis of G117-B15A and R548. We study them side by side
because they have similar observed properties. We carry out a systematic, fine
grid search for best fit models to the observed period spectra of those stars.
We freely vary 4 parameters: the effective temperature, the stellar mass, the
helium layer mass, and the hydrogen layer mass. We identify and quantify a
number of uncertainties associated with our models. Based on the results of
that analysis and fits to the periods observed in R548 and G117-B15A, we
clearly define the regions of the 4 dimensional parameter space ocuppied by the
best fit models.
| astro-ph | we now have a good measurement of the cooling rate of g117b15a in the near future we will have equally well determined cooling rates for other pulsating white dwarfs including r548 the ability to measure their cooling rates offers us a unique way to study weakly interacting particles that would contribute to their cooling working toward that goal we perform a careful asteroseismological analysis of g117b15a and r548 we study them side by side because they have similar observed properties we carry out a systematic fine grid search for best fit models to the observed period spectra of those stars we freely vary 4 parameters the effective temperature the stellar mass the helium layer mass and the hydrogen layer mass we identify and quantify a number of uncertainties associated with our models based on the results of that analysis and fits to the periods observed in r548 and g117b15a we clearly define the regions of the 4 dimensional parameter space ocuppied by the best fit models | [['we', 'now', 'have', 'a', 'good', 'measurement', 'of', 'the', 'cooling', 'rate', 'of', 'g117b15a', 'in', 'the', 'near', 'future', 'we', 'will', 'have', 'equally', 'well', 'determined', 'cooling', 'rates', 'for', 'other', 'pulsating', 'white', 'dwarfs', 'including', 'r548', 'the', 'ability', 'to', 'measure', 'their', 'cooling', 'rates', 'offers', 'us', 'a', 'unique', 'way', 'to', 'study', 'weakly', 'interacting', 'particles', 'that', 'would', 'contribute', 'to', 'their', 'cooling', 'working', 'toward', 'that', 'goal', 'we', 'perform', 'a', 'careful', 'asteroseismological', 'analysis', 'of', 'g117b15a', 'and', 'r548', 'we', 'study', 'them', 'side', 'by', 'side', 'because', 'they', 'have', 'similar', 'observed', 'properties', 'we', 'carry', 'out', 'a', 'systematic', 'fine', 'grid', 'search', 'for', 'best', 'fit', 'models', 'to', 'the', 'observed', 'period', 'spectra', 'of', 'those', 'stars', 'we', 'freely', 'vary', '4', 'parameters', 'the', 'effective', 'temperature', 'the', 'stellar', 'mass', 'the', 'helium', 'layer', 'mass', 'and', 'the', 'hydrogen', 'layer', 'mass', 'we', 'identify', 'and', 'quantify', 'a', 'number', 'of', 'uncertainties', 'associated', 'with', 'our', 'models', 'based', 'on', 'the', 'results', 'of', 'that', 'analysis', 'and', 'fits', 'to', 'the', 'periods', 'observed', 'in', 'r548', 'and', 'g117b15a', 'we', 'clearly', 'define', 'the', 'regions', 'of', 'the', '4', 'dimensional', 'parameter', 'space', 'ocuppied', 'by', 'the', 'best', 'fit', 'models']] | [-0.063308511061989, 0.1227023862118861, -0.08764706684671568, 0.07784495911927837, -0.08624477960507979, -0.09730157909463301, 0.13017223428257488, 0.40822634956601894, -0.19268201574344526, -0.3471791800139754, 0.08708266418137954, -0.28858298035567825, -0.04626734543408295, 0.2236034693341053, -0.02799828713195342, 0.020643224996147735, 0.0743369290435856, 0.0007998157458408087, -0.059607212327307826, -0.2420318840417277, 0.2890068301564139, 0.10715959121219136, 0.2041482627970364, -0.022851962014806992, 0.01787499355321581, -0.07514123402564138, -0.08906659614100741, -0.02753186098910219, -0.20671214605165666, 0.060538472624664955, 0.20285152627989053, 0.09608535387440387, 0.19485233101824467, -0.3799304875629869, -0.23153252729750945, 0.11021343850615349, 0.16170102206524462, 0.07804312096682914, -0.046868127487091855, -0.20754363298359693, 0.04575765300012956, -0.1671928162912302, -0.15973859030584042, -0.08555389043114811, -0.002886565379572637, 0.039224954940040004, -0.2579994727236529, 0.06774798081041257, 0.04677139160979123, 0.033610247727483514, -0.11346113528266097, -0.1351064887772681, -0.04841420664593126, 0.15382999832544364, 0.04238573633077921, 0.016474179635671053, 0.14354969063547976, -0.10882203670586353, -0.054733411943765756, 0.36177727889135536, -0.1278880827128887, -0.10393413692046041, 0.23932631902791784, -0.17199128590185533, -0.14499915180106956, 0.10749777135241664, 0.17735851484167417, 0.12415216230138233, -0.1538243151354519, 0.00012706788644815484, -0.020748247307809917, 0.20214232564198248, 0.025622230974223576, 0.04015058461915363, 0.2823694522069259, 0.18770500916536106, 0.0029365191518357305, 0.07596932786382792, -0.15837985387011996, -0.0877725392156704, -0.22922377921076434, -0.13119457644890203, -0.08021961582373037, 0.0341246964790943, -0.06280803664501008, -0.12725685448526886, 0.3880840415953461, 0.17503886519698425, 0.2397440046960996, 0.03133695814987842, 0.27668423347711335, 0.09272377481895754, 0.09932492804496591, 0.07089912230148912, 0.28935698100619694, 0.16121534175719276, 0.0755615613649063, -0.24771618968383832, 0.038726216752194995, -0.004178442392554699] |
711.204 | Slow-light effect in dual-periodic photonic lattice | We present analytical and numerical study of photonic lattice with short- and
long-range harmonic modulations of the refractive index. Such structures can be
prepared experimentally with holographic photolithography. In the spectral
region of photonic bandgap of the underlying single-periodic crystal, we
observe a series of bands with anomalously small dispersion. The related
slow-light effect is attributed to the long-range modulation in the photonic
lattice, that leads to formation of an array of evanescently-coupled high-$Q$
cavities. The band structure of the lattice is studied with several techniques:
(i) transfer matrix approach; (ii) analysis of resonant coupling in process of
band folding; (iii) effective medium approach based on coupled-mode theory; and
(iv) Bogolyubov-Mitropolsky approach. The latter method, commonly used in the
studies of nonlinear oscillators, was employed to investigate the behavior of
the eigen-function envelopes and the band structure of our dual-periodic
photonic lattice. We show that reliable results can be obtained even in the
case of large refractive index modulation.
| physics.optics | we present analytical and numerical study of photonic lattice with short and longrange harmonic modulations of the refractive index such structures can be prepared experimentally with holographic photolithography in the spectral region of photonic bandgap of the underlying singleperiodic crystal we observe a series of bands with anomalously small dispersion the related slowlight effect is attributed to the longrange modulation in the photonic lattice that leads to formation of an array of evanescentlycoupled highq cavities the band structure of the lattice is studied with several techniques i transfer matrix approach ii analysis of resonant coupling in process of band folding iii effective medium approach based on coupledmode theory and iv bogolyubovmitropolsky approach the latter method commonly used in the studies of nonlinear oscillators was employed to investigate the behavior of the eigenfunction envelopes and the band structure of our dualperiodic photonic lattice we show that reliable results can be obtained even in the case of large refractive index modulation | [['we', 'present', 'analytical', 'and', 'numerical', 'study', 'of', 'photonic', 'lattice', 'with', 'short', 'and', 'longrange', 'harmonic', 'modulations', 'of', 'the', 'refractive', 'index', 'such', 'structures', 'can', 'be', 'prepared', 'experimentally', 'with', 'holographic', 'photolithography', 'in', 'the', 'spectral', 'region', 'of', 'photonic', 'bandgap', 'of', 'the', 'underlying', 'singleperiodic', 'crystal', 'we', 'observe', 'a', 'series', 'of', 'bands', 'with', 'anomalously', 'small', 'dispersion', 'the', 'related', 'slowlight', 'effect', 'is', 'attributed', 'to', 'the', 'longrange', 'modulation', 'in', 'the', 'photonic', 'lattice', 'that', 'leads', 'to', 'formation', 'of', 'an', 'array', 'of', 'evanescentlycoupled', 'highq', 'cavities', 'the', 'band', 'structure', 'of', 'the', 'lattice', 'is', 'studied', 'with', 'several', 'techniques', 'i', 'transfer', 'matrix', 'approach', 'ii', 'analysis', 'of', 'resonant', 'coupling', 'in', 'process', 'of', 'band', 'folding', 'iii', 'effective', 'medium', 'approach', 'based', 'on', 'coupledmode', 'theory', 'and', 'iv', 'bogolyubovmitropolsky', 'approach', 'the', 'latter', 'method', 'commonly', 'used', 'in', 'the', 'studies', 'of', 'nonlinear', 'oscillators', 'was', 'employed', 'to', 'investigate', 'the', 'behavior', 'of', 'the', 'eigenfunction', 'envelopes', 'and', 'the', 'band', 'structure', 'of', 'our', 'dualperiodic', 'photonic', 'lattice', 'we', 'show', 'that', 'reliable', 'results', 'can', 'be', 'obtained', 'even', 'in', 'the', 'case', 'of', 'large', 'refractive', 'index', 'modulation']] | [-0.14292992267142743, 0.13448246416663048, -0.07162160317723949, -0.004323432936486755, -0.04687285716257369, -0.13425926056105453, 0.03428202151964144, 0.47758107136887235, -0.2531771971515786, -0.27588763072465855, 0.05948184015906941, -0.2552175859037118, -0.20698729431770074, 0.18224686464796272, 0.02122396517389018, 0.0709053937656184, 0.029933050898715664, -0.055648283646382295, -0.03902958700200543, -0.1596614063063708, 0.30059209772317, 0.05996969683716694, 0.31932442616790724, 0.07446269476666856, 0.03113392384078067, 0.008038025056847777, 0.008439271958568731, 0.004953730720071456, -0.13468776550489098, 0.16867973419198862, 0.23056443767526594, -0.028611337589935806, 0.19925060040520456, -0.4374375395739499, -0.2470685541868592, 0.03016657109420078, 0.14685076329027277, 0.14457183054839381, -0.044190333122409914, -0.2686662415911157, 0.058756471396638796, -0.15926165726537314, -0.15387217126165828, -0.06405355062750646, -0.03078555285285872, 0.02112193329510494, -0.24361642366588618, 0.07743918782197841, 0.023660355325167377, 0.05980590190022038, -0.056531918296315826, -0.06887190455111125, -0.02210151008181035, 0.04964963085830021, -0.006883809871513409, -0.047675562740411036, 0.10441694802377754, -0.0869336756616413, -0.1273067415996383, 0.41972672542369066, -0.10874854509189064, -0.12374071118374093, 0.1498679784648956, -0.17726350799859622, -0.050722909100258194, 0.15950062033982995, 0.18050577740434212, 0.07181808280531699, -0.0744574556839115, 0.0640783204849308, 0.004405351943718508, 0.2296765418544125, 0.06847041656072132, 0.09531151013783155, 0.1765419962504007, 0.2013080625276929, 0.011442464067397688, 0.1571253890541788, -0.1092032861587284, -0.045613104570060015, -0.25087922896879417, -0.13916747122764206, -0.2302828518082746, 0.027223822413734756, -0.12648629338013379, -0.2073481309150035, 0.4190264500868626, 0.10410182800394698, 0.16037574019477083, -0.03647666724207692, 0.22099656218256897, 0.15182329197070943, 0.08913226819071823, 0.012159000556820478, 0.2828573594325019, 0.1776248602127919, 0.09437958977949353, -0.2820468918436792, -0.022061719174066987, 0.028760692909156952] |
711.2041 | Strong limits on the DFSZ axion mass with G117-B15A | We compute rates of period change (Pdots) for the 215s mode in G117-B15A and
the 213s mode in R548, first for models without axions, and then for models
with axions of increasing mass. We use the asteroseismological models for
G117-B15A and R548 we derived in an earlier publication . For G117-B15A, we
consider two families of solutions, one with relatively thick hydrogen layers
and one with thin hydrogen layers. Given the region of parameter space occupied
by our models, we estimate error bars on the calculated Pdots using Monte Carlo
simulations. Together with the observed Pdot for G117-B15A, our analysis yields
strong limits on the DFSZ axion mass. Our thin hydrogen solutions place an
upper limit of 13.5 meV on the axion, while our thick hydrogen solutions
relaxes that limit to 26.5 meV.
| astro-ph | we compute rates of period change pdots for the 215s mode in g117b15a and the 213s mode in r548 first for models without axions and then for models with axions of increasing mass we use the asteroseismological models for g117b15a and r548 we derived in an earlier publication for g117b15a we consider two families of solutions one with relatively thick hydrogen layers and one with thin hydrogen layers given the region of parameter space occupied by our models we estimate error bars on the calculated pdots using monte carlo simulations together with the observed pdot for g117b15a our analysis yields strong limits on the dfsz axion mass our thin hydrogen solutions place an upper limit of 135 mev on the axion while our thick hydrogen solutions relaxes that limit to 265 mev | [['we', 'compute', 'rates', 'of', 'period', 'change', 'pdots', 'for', 'the', '215s', 'mode', 'in', 'g117b15a', 'and', 'the', '213s', 'mode', 'in', 'r548', 'first', 'for', 'models', 'without', 'axions', 'and', 'then', 'for', 'models', 'with', 'axions', 'of', 'increasing', 'mass', 'we', 'use', 'the', 'asteroseismological', 'models', 'for', 'g117b15a', 'and', 'r548', 'we', 'derived', 'in', 'an', 'earlier', 'publication', 'for', 'g117b15a', 'we', 'consider', 'two', 'families', 'of', 'solutions', 'one', 'with', 'relatively', 'thick', 'hydrogen', 'layers', 'and', 'one', 'with', 'thin', 'hydrogen', 'layers', 'given', 'the', 'region', 'of', 'parameter', 'space', 'occupied', 'by', 'our', 'models', 'we', 'estimate', 'error', 'bars', 'on', 'the', 'calculated', 'pdots', 'using', 'monte', 'carlo', 'simulations', 'together', 'with', 'the', 'observed', 'pdot', 'for', 'g117b15a', 'our', 'analysis', 'yields', 'strong', 'limits', 'on', 'the', 'dfsz', 'axion', 'mass', 'our', 'thin', 'hydrogen', 'solutions', 'place', 'an', 'upper', 'limit', 'of', '135', 'mev', 'on', 'the', 'axion', 'while', 'our', 'thick', 'hydrogen', 'solutions', 'relaxes', 'that', 'limit', 'to', '265', 'mev']] | [-0.06649408944213064, 0.12760630154502905, -0.01009782023538719, 0.0663091137248557, -0.014233706059258111, -0.0812879672521376, 0.13908997669204837, 0.3738205505251244, -0.16696748456161004, -0.33295633983652806, 0.08945956502884655, -0.28814756673091324, -0.002810608099480305, 0.23616512626904296, 0.016631179996466017, 0.0217982577814837, 0.08204168221527652, -0.03679613173153484, -0.06097856654923817, -0.22891063146562374, 0.2981541956687579, 0.05248188384939567, 0.20298805586935487, -0.011494260383187793, 0.06945416830421891, -0.05981387685096706, 0.002641777943381385, -0.09348114104454908, -0.23901247318491414, 0.08282203139242483, 0.17179456946507798, 0.03454083296310273, 0.16837924446735997, -0.4288646872737445, -0.21633542941708583, 0.08889236566938052, 0.15958622491598362, 0.10810445161587268, -0.05769713912104635, -0.2630610184296529, 0.07761338527961925, -0.18365192915371154, -0.12040192700442276, -0.027937555390963098, 0.028434312458557542, 0.013410673981979926, -0.2933187869612084, 0.07724618611064216, 0.023129059438360855, 0.01421391676717576, -0.15668295844079694, -0.1725366893952014, -0.04693588953523431, 0.0451932235600907, 0.0921195183382224, 0.028651181684836047, 0.11455512728207395, -0.11672346570412628, -0.07263207713185693, 0.3360421385950758, -0.17620637761137914, -0.11052277899580076, 0.18364936175021285, -0.12946369866040186, -0.16033687100934912, 0.13857202753570164, 0.13625315155513817, 0.13172211071650963, -0.08726519529591314, 0.0811117900575482, -0.029034365179541055, 0.24077689722435025, 0.051501093817933, 0.00018718267347139772, 0.2699593762445147, 0.20592759744613431, 0.005034801819419954, 0.0835819050007558, -0.1486465801117447, -0.09395645199765568, -0.2653674411994871, -0.12133262753195595, -0.09251865813121185, 0.029180543312577356, -0.11987653639471318, -0.1600595959025668, 0.33590570635715267, 0.13508657929196488, 0.2093433788177208, 0.06817073057572998, 0.2711263788951328, 0.13660446036556095, 0.05295869460371705, 0.0769696296483744, 0.32371333068294916, 0.17960764003328222, 0.07327545693829052, -0.1924267785398115, 0.01496671501217861, 0.058888828974886565] |
711.2042 | A pseudo-parallel Python environment for database curation | One of the major challenges providing large databases like the WFCAM Science
Archive (WSA) is to minimize ingest times for pixel/image metadata and
catalogue data. In this article we describe how the pipeline processed data are
ingested into the database as the first stage in building a release database
which will be succeeded by advanced processing (source merging, seaming,
detection quality flagging etc.). To accomplish the ingestion procedure as fast
as possible we use a mixed Python/C++ environment and run the required tasks in
a simple parallel modus operandi where the data are split into daily chunks and
then processed on different computers. The created data files can be ingested
into the database immediately as they are available. This flexible way of
handling the data allows the most usage of the available CPUs as the comparison
with sequential processing shows.
| astro-ph | one of the major challenges providing large databases like the wfcam science archive wsa is to minimize ingest times for pixelimage metadata and catalogue data in this article we describe how the pipeline processed data are ingested into the database as the first stage in building a release database which will be succeeded by advanced processing source merging seaming detection quality flagging etc to accomplish the ingestion procedure as fast as possible we use a mixed pythonc environment and run the required tasks in a simple parallel modus operandi where the data are split into daily chunks and then processed on different computers the created data files can be ingested into the database immediately as they are available this flexible way of handling the data allows the most usage of the available cpus as the comparison with sequential processing shows | [['one', 'of', 'the', 'major', 'challenges', 'providing', 'large', 'databases', 'like', 'the', 'wfcam', 'science', 'archive', 'wsa', 'is', 'to', 'minimize', 'ingest', 'times', 'for', 'pixelimage', 'metadata', 'and', 'catalogue', 'data', 'in', 'this', 'article', 'we', 'describe', 'how', 'the', 'pipeline', 'processed', 'data', 'are', 'ingested', 'into', 'the', 'database', 'as', 'the', 'first', 'stage', 'in', 'building', 'a', 'release', 'database', 'which', 'will', 'be', 'succeeded', 'by', 'advanced', 'processing', 'source', 'merging', 'seaming', 'detection', 'quality', 'flagging', 'etc', 'to', 'accomplish', 'the', 'ingestion', 'procedure', 'as', 'fast', 'as', 'possible', 'we', 'use', 'a', 'mixed', 'pythonc', 'environment', 'and', 'run', 'the', 'required', 'tasks', 'in', 'a', 'simple', 'parallel', 'modus', 'operandi', 'where', 'the', 'data', 'are', 'split', 'into', 'daily', 'chunks', 'and', 'then', 'processed', 'on', 'different', 'computers', 'the', 'created', 'data', 'files', 'can', 'be', 'ingested', 'into', 'the', 'database', 'immediately', 'as', 'they', 'are', 'available', 'this', 'flexible', 'way', 'of', 'handling', 'the', 'data', 'allows', 'the', 'most', 'usage', 'of', 'the', 'available', 'cpus', 'as', 'the', 'comparison', 'with', 'sequential', 'processing', 'shows']] | [-0.06762183986543475, 0.044839569883745004, -0.08036488136006655, 0.05910340254701188, -0.14273213492234008, -0.10660990609355486, 0.03931395063325223, 0.3875477086158766, -0.28912146210896555, -0.3984800736095918, 0.1769579733600435, -0.2971527676075483, -0.042106176969473774, 0.23950332243913325, -0.08485403213569004, 0.041217625764239936, 0.16898533722480247, -0.0011626899012944837, -0.0018540660650773054, -0.29815272371406143, 0.24023274665671415, 0.08262454265175198, 0.3147891260939988, -0.03270586326961284, 0.042334478668213917, 0.0033165567771335927, -0.1105978287709202, -0.044395019533112645, -0.050708905907611, 0.1413645380416183, 0.3500036839733197, 0.27496231173543073, 0.26403765550450137, -0.4894768570050381, -0.14195946766320022, 0.045278578888678894, 0.15279702561826486, 0.09979715887743952, -0.06982820855362502, -0.2864777303327793, 0.07266059811513843, -0.19522481121669483, -0.03976788236489655, -0.10519774090768634, 0.0047104165052482185, 0.02256816058365655, -0.23751362103401966, -0.001094594148605171, 0.006853481056168675, 0.05017498280664069, -0.0357727428305172, -0.09276768419405688, -0.03133362526937887, 0.21294288205799472, -0.01480581025775198, 0.03952442381220559, 0.14198788886626615, -0.10505619202571773, -0.08683245101111833, 0.4380719136122776, -0.04770590046393699, -0.09789020997350631, 0.16403755654122823, -0.027044094487238275, -0.20186101869625997, 0.08495747743417388, 0.22943871800342333, 0.0734795945396215, -0.23596741487204598, 0.013299301805301988, 0.041973186562350696, 0.18895495395712636, 0.055792343508759244, 0.005205215116881806, 0.2178105047593514, 0.20264454046011213, 0.0024926564926146598, 0.17806191767896593, -0.135481619522039, -0.03985931890707908, -0.25934008369897155, -0.16635675208332637, -0.17821156020964618, -0.028040021941389725, -0.04695281093787027, -0.1269308690528345, 0.33961357195200265, 0.19541550585426445, 0.17473542321291144, 0.017881497800640384, 0.39971417856092256, 0.010486512886110586, 0.18087726018553518, 0.11192959074970281, 0.11206254137315504, -0.02284256157472028, 0.1847839137249073, -0.11499858738692559, 0.0791766901291313, -0.03674395906884878] |
711.2043 | Poisson and symplectic functions in Lie algebroid theory | Emphasizing the role of Gerstenhaber algebras and of higher derived brackets
in the theory of Lie algebroids, we show that the several Lie algebroid
brackets which have been introduced in the recent literature can all be defined
in terms of Poisson and pre-symplectic functions in the sense of Roytenberg and
Terashima. We prove that in this very general framework there exists a
one-to-one correspondence between non-degenerate Poisson functions and
symplectic functions. We determine the differential associated to a Lie
algebroid structure obtained by twisting a structure with background by both a
Lie bialgebra action and a Poisson bivector.
| math.SG | emphasizing the role of gerstenhaber algebras and of higher derived brackets in the theory of lie algebroids we show that the several lie algebroid brackets which have been introduced in the recent literature can all be defined in terms of poisson and presymplectic functions in the sense of roytenberg and terashima we prove that in this very general framework there exists a onetoone correspondence between nondegenerate poisson functions and symplectic functions we determine the differential associated to a lie algebroid structure obtained by twisting a structure with background by both a lie bialgebra action and a poisson bivector | [['emphasizing', 'the', 'role', 'of', 'gerstenhaber', 'algebras', 'and', 'of', 'higher', 'derived', 'brackets', 'in', 'the', 'theory', 'of', 'lie', 'algebroids', 'we', 'show', 'that', 'the', 'several', 'lie', 'algebroid', 'brackets', 'which', 'have', 'been', 'introduced', 'in', 'the', 'recent', 'literature', 'can', 'all', 'be', 'defined', 'in', 'terms', 'of', 'poisson', 'and', 'presymplectic', 'functions', 'in', 'the', 'sense', 'of', 'roytenberg', 'and', 'terashima', 'we', 'prove', 'that', 'in', 'this', 'very', 'general', 'framework', 'there', 'exists', 'a', 'onetoone', 'correspondence', 'between', 'nondegenerate', 'poisson', 'functions', 'and', 'symplectic', 'functions', 'we', 'determine', 'the', 'differential', 'associated', 'to', 'a', 'lie', 'algebroid', 'structure', 'obtained', 'by', 'twisting', 'a', 'structure', 'with', 'background', 'by', 'both', 'a', 'lie', 'bialgebra', 'action', 'and', 'a', 'poisson', 'bivector']] | [-0.19639837016275494, 0.016387673589039822, -0.06952948196391974, 0.10931497628263635, -0.15713836503101095, -0.09139126300222564, -0.024245697564245865, 0.39741726419223206, -0.3496366618011071, -0.24487805090920658, 0.023634339161264728, -0.17934218145982952, -0.2847837236120689, 0.16380457577238583, -0.1281845772600904, -0.04586856740013677, 0.056763534693104425, 0.1032592105745737, -0.16985269322782298, -0.22238789847101637, 0.45911336160378946, 0.05297469110845835, 0.24087009643684426, -0.004213852342218161, 0.1816984518485771, -0.022694798433506976, -0.03287030019968444, 0.001062792703290755, -0.13513962542997526, 0.12187454454144653, 0.3246226721842374, 0.01295113821551964, 0.18859741226199786, -0.37707117079205965, -0.14135280735220532, 0.11982595197362256, 0.11656282395979732, 0.0017325329672716254, -0.04391349512104857, -0.317363711606179, 0.0943634292509939, -0.21512185400161815, -0.09973951530813867, -0.07779111061007621, 0.030876912247883727, 0.025770310279248015, -0.19304291050220668, 0.041239756328167815, 0.10271001678929494, 0.09998906435140846, -0.10520290741126756, -0.09324502770442097, -0.12224938961373148, 0.05247443070996324, -0.05388927720106986, 0.05444417538463461, 0.10641886146587072, -0.0868276057750633, -0.1691061381395545, 0.3909021980148189, -0.04443363909020412, -0.2953322869820558, 0.09622238458333802, -0.1952807207696368, -0.23461147927565082, 0.07833412866469244, 0.036448792858543445, 0.11855173005475378, -0.13526773662900324, 0.20501295730592778, -0.08383303360386314, -0.04246156910263306, 0.1354963602023009, -0.01806727810275779, 0.15325682079514527, 0.10530407795425961, 0.052528379848512004, 0.05147662014125523, 0.02827264738152735, -0.11366902975536579, -0.34311983209787583, -0.1723750327423937, -0.046362538176959345, 0.12169002907407679, -0.10512790880661947, -0.1624935771509701, 0.36253604966177777, 0.11536159929439273, 0.24074673149449638, 0.08548364836404253, 0.15017130019319036, 0.16369275502594455, 0.10461723775013673, 0.056323344785986204, 0.19566584700998868, 0.2996210779338999, 0.029462223882045672, -0.09330324805816825, -0.09042997985522319, 0.1583850894845566] |
711.2044 | Secondary Cosmic Ray particles due to GCR interactions in the Earth's
atmosphere | Primary GCR interact with the Earth's atmosphere originating atmospheric
showers, thus giving rise to fluxes of secondary particles in the atmosphere.
Electromagnetic and hadronic interactions interplay in the production of these
particles, whose detection is performed by means of complementary techniques in
different energy ranges and at different depths in the atmosphere, down to the
Earth's surface.
Monte Carlo codes are essential calculation tools which can describe the
complexity of the physics of these phenomena, thus allowing the analysis of
experimental data. However, these codes are affected by important
uncertainties, concerning, in particular, hadronic physics at high energy. In
this paper we shall report some results concerning inclusive particle fluxes
and atmospheric shower properties as obtained using the FLUKA transport and
interaction code. Some emphasis will also be given to the validation of the
physics models of FLUKA involved in these calculations.
| astro-ph | primary gcr interact with the earths atmosphere originating atmospheric showers thus giving rise to fluxes of secondary particles in the atmosphere electromagnetic and hadronic interactions interplay in the production of these particles whose detection is performed by means of complementary techniques in different energy ranges and at different depths in the atmosphere down to the earths surface monte carlo codes are essential calculation tools which can describe the complexity of the physics of these phenomena thus allowing the analysis of experimental data however these codes are affected by important uncertainties concerning in particular hadronic physics at high energy in this paper we shall report some results concerning inclusive particle fluxes and atmospheric shower properties as obtained using the fluka transport and interaction code some emphasis will also be given to the validation of the physics models of fluka involved in these calculations | [['primary', 'gcr', 'interact', 'with', 'the', 'earths', 'atmosphere', 'originating', 'atmospheric', 'showers', 'thus', 'giving', 'rise', 'to', 'fluxes', 'of', 'secondary', 'particles', 'in', 'the', 'atmosphere', 'electromagnetic', 'and', 'hadronic', 'interactions', 'interplay', 'in', 'the', 'production', 'of', 'these', 'particles', 'whose', 'detection', 'is', 'performed', 'by', 'means', 'of', 'complementary', 'techniques', 'in', 'different', 'energy', 'ranges', 'and', 'at', 'different', 'depths', 'in', 'the', 'atmosphere', 'down', 'to', 'the', 'earths', 'surface', 'monte', 'carlo', 'codes', 'are', 'essential', 'calculation', 'tools', 'which', 'can', 'describe', 'the', 'complexity', 'of', 'the', 'physics', 'of', 'these', 'phenomena', 'thus', 'allowing', 'the', 'analysis', 'of', 'experimental', 'data', 'however', 'these', 'codes', 'are', 'affected', 'by', 'important', 'uncertainties', 'concerning', 'in', 'particular', 'hadronic', 'physics', 'at', 'high', 'energy', 'in', 'this', 'paper', 'we', 'shall', 'report', 'some', 'results', 'concerning', 'inclusive', 'particle', 'fluxes', 'and', 'atmospheric', 'shower', 'properties', 'as', 'obtained', 'using', 'the', 'fluka', 'transport', 'and', 'interaction', 'code', 'some', 'emphasis', 'will', 'also', 'be', 'given', 'to', 'the', 'validation', 'of', 'the', 'physics', 'models', 'of', 'fluka', 'involved', 'in', 'these', 'calculations']] | [-0.06029219232916891, 0.23607231840215834, -0.07178691296689016, 0.13511480565812492, -0.014180178570390587, -0.06842158391127284, -0.011323349112579206, 0.357636377307206, -0.25069398074542026, -0.40716854095931204, 0.0605216170931694, -0.2986797457954413, -0.061768789159160266, 0.2183155568249353, 0.016024016811263184, 0.07015080462311539, 0.1307760445191197, -0.024975351854817758, -0.0642552270757323, -0.19397832481124977, 0.2853949162895909, 0.19266012766149263, 0.18965886249928407, 0.13540940951661726, 0.03564520426255218, -0.010104042215561363, -0.11275382178407621, -0.016012746771850005, -0.17822767377332588, 0.11537968428128294, 0.26312076433186776, 0.09839264636787153, 0.12528553601800346, -0.48469284360467546, -0.23479621881097687, 0.06474690279156022, 0.1419216249429975, 0.08068538362957196, -0.06024018608191064, -0.24165419464878424, 0.02142936277570544, -0.16474669675865788, -0.11546460479419206, -0.03371328748041161, -0.06626877823678948, 0.04433637770453573, -0.23848898627493584, 0.016589570526340254, 0.016059223995347257, 0.11086117681299301, -0.058924444309193115, -0.1731724930127007, -0.036867753051641125, 0.13855615960643955, 0.10315613090437771, -0.0095022174752724, 0.15074806253124082, -0.14037369006857747, -0.10763396302067584, 0.4083964763812616, -0.035896228558324854, -0.15292321578402754, 0.24080176380607235, -0.17129153326157034, -0.14307666124618598, 0.19458048262397273, 0.21642369811806803, 0.06470544154847592, -0.19139063022178138, 0.07446470631542287, 0.028061335603870505, 0.10145664486614331, 0.03395094583958755, 0.05534167317214461, 0.2476007171683538, 0.16502249399265667, -0.03827773923264213, 0.08560614554214777, -0.11698429874951204, -0.0730224855172015, -0.3075499099902284, -0.12298227361941212, -0.11663222140927708, 0.03146652643270397, -0.05038510602650898, -0.1404610179318771, 0.411426956004555, 0.19502566261282583, 0.12214254768496431, -0.021063949372521013, 0.3133351786757334, 0.039165856033845634, 0.0016943498819567999, 0.059289845083774606, 0.2882175855006544, 0.1534827162223068, 0.10393427168740563, -0.23421637750883312, 0.07917422416593722, 0.05108157719131297] |
711.2045 | An infrared study of the double nucleus in NGC3256 | We present new resolved near and mid-IR imaging and N-band spectroscopy of
the two nuclei in the merger system NGCA3256, the most IR luminous galaxy in
the nearby universe. The results from the SED fit to the data are consistent
with previous estimates of the amount of obscuration towards the nuclei and the
nuclear star formation rates. However, we also find substantial differences in
the infrared emission from the two nuclei which cannot be explained by
obscuration alone. We conclude that the northern nucleus requires an additional
component of warm dust in order to explain its properties. This suggests that
local starforming conditions can vary significantly within the environment of a
single system.
| astro-ph | we present new resolved near and midir imaging and nband spectroscopy of the two nuclei in the merger system ngca3256 the most ir luminous galaxy in the nearby universe the results from the sed fit to the data are consistent with previous estimates of the amount of obscuration towards the nuclei and the nuclear star formation rates however we also find substantial differences in the infrared emission from the two nuclei which cannot be explained by obscuration alone we conclude that the northern nucleus requires an additional component of warm dust in order to explain its properties this suggests that local starforming conditions can vary significantly within the environment of a single system | [['we', 'present', 'new', 'resolved', 'near', 'and', 'midir', 'imaging', 'and', 'nband', 'spectroscopy', 'of', 'the', 'two', 'nuclei', 'in', 'the', 'merger', 'system', 'ngca3256', 'the', 'most', 'ir', 'luminous', 'galaxy', 'in', 'the', 'nearby', 'universe', 'the', 'results', 'from', 'the', 'sed', 'fit', 'to', 'the', 'data', 'are', 'consistent', 'with', 'previous', 'estimates', 'of', 'the', 'amount', 'of', 'obscuration', 'towards', 'the', 'nuclei', 'and', 'the', 'nuclear', 'star', 'formation', 'rates', 'however', 'we', 'also', 'find', 'substantial', 'differences', 'in', 'the', 'infrared', 'emission', 'from', 'the', 'two', 'nuclei', 'which', 'can', 'not', 'be', 'explained', 'by', 'obscuration', 'alone', 'we', 'conclude', 'that', 'the', 'northern', 'nucleus', 'requires', 'an', 'additional', 'component', 'of', 'warm', 'dust', 'in', 'order', 'to', 'explain', 'its', 'properties', 'this', 'suggests', 'that', 'local', 'starforming', 'conditions', 'can', 'vary', 'significantly', 'within', 'the', 'environment', 'of', 'a', 'single', 'system']] | [-0.025842470816435474, 0.07499946841047521, -0.1044855851894327, 0.09773061306430109, -0.03706997631950123, -0.02901482530168991, 0.036622798397922804, 0.44767478197417426, -0.20147755487916777, -0.32120240708005376, 0.06772960941678127, -0.2857744498095945, -0.031828621591944085, 0.1707223932852387, -0.053799099949721284, -0.07327769561083493, 0.02336413864936449, -0.08124635370233946, -0.03505447208963796, -0.23511184957620185, 0.3322174177233097, 0.09640047274760705, 0.17104616932842914, 0.015857099774934914, 0.02897317100118483, -0.08053602885652696, -0.08122654752888248, -0.024051948013690722, -0.10456403779276478, 0.08590650820972777, 0.2329370442106166, 0.11469134242908485, 0.19377698525024034, -0.40467301785814025, -0.23689259831851298, 0.10759346316510861, 0.2053428229348388, 0.07960247640617489, -0.08554980452419712, -0.2472095753095088, 0.025589251585832213, -0.18023300109188015, -0.1798027338484813, 0.008448388419254164, -0.02725469018538705, 0.03109793643883339, -0.24528750884387873, 0.12088950415346895, 0.018015645274406182, 0.06088263218793853, -0.1398673692699604, -0.09330577293485073, -0.065802840046189, 0.09603028279622045, 0.042938771645283015, 0.05457540793525698, 0.2000641402153842, -0.17538299698143603, -0.03879326226733691, 0.37926052584090325, -0.05682465740720601, -0.005265965895001999, 0.23003439409390455, -0.24051147401415274, -0.19294084402097933, 0.18880905181095334, 0.12435475074216328, 0.12192585447028412, -0.174536012244963, -0.016087769950529875, -0.03221594437594171, 0.2408721280836426, -0.014202852067908486, 0.1032524670792828, 0.29481124757599514, 0.1232520988318179, 0.02463039941364586, 0.10548130964007295, -0.20749097342182576, -0.05428273697276559, -0.28117025609795765, -0.08941594916972768, -0.15227412490948902, 0.0542819909793912, -0.12940461025740724, -0.06883529927251877, 0.3464274686983729, 0.11985580893480673, 0.24371407364404438, -0.0022578972125986375, 0.3012611583674706, 0.05326871360462587, 0.12031883563829866, 0.10248476072354654, 0.3621503362118934, 0.09522704852835596, 0.06900914118880719, -0.3006322164113213, 0.0792995381912843, -0.022972671092545565] |
711.2046 | Neutrino self-energy in a magnetized charge-symmetric medium | In this talk we present the calculation of the neutrino self-energy in
presence of a magnetized medium. The magnetized medium consists of electrons,
positrons, neutrinos and a uniform classical magnetic field. The background
magnetic field is assumed to be weak compared to the $W$-Boson mass as a
consequence of which only linear order corrections in the field are included in
the $W$ boson propagator. The electron propagator consists all order
corrections in the background field. Our calculation is specifically suited for
situations where the background plasma may be CP symmetric.
| hep-ph | in this talk we present the calculation of the neutrino selfenergy in presence of a magnetized medium the magnetized medium consists of electrons positrons neutrinos and a uniform classical magnetic field the background magnetic field is assumed to be weak compared to the wboson mass as a consequence of which only linear order corrections in the field are included in the w boson propagator the electron propagator consists all order corrections in the background field our calculation is specifically suited for situations where the background plasma may be cp symmetric | [['in', 'this', 'talk', 'we', 'present', 'the', 'calculation', 'of', 'the', 'neutrino', 'selfenergy', 'in', 'presence', 'of', 'a', 'magnetized', 'medium', 'the', 'magnetized', 'medium', 'consists', 'of', 'electrons', 'positrons', 'neutrinos', 'and', 'a', 'uniform', 'classical', 'magnetic', 'field', 'the', 'background', 'magnetic', 'field', 'is', 'assumed', 'to', 'be', 'weak', 'compared', 'to', 'the', 'wboson', 'mass', 'as', 'a', 'consequence', 'of', 'which', 'only', 'linear', 'order', 'corrections', 'in', 'the', 'field', 'are', 'included', 'in', 'the', 'w', 'boson', 'propagator', 'the', 'electron', 'propagator', 'consists', 'all', 'order', 'corrections', 'in', 'the', 'background', 'field', 'our', 'calculation', 'is', 'specifically', 'suited', 'for', 'situations', 'where', 'the', 'background', 'plasma', 'may', 'be', 'cp', 'symmetric']] | [-0.140280856194699, 0.2230953641132348, -0.03051371860007445, 0.11904252798736302, -0.06541128277571664, -0.05890423442857961, -0.0218327737853138, 0.33668407541182305, -0.18621620937354036, -0.2817714136430166, 0.011055578757077456, -0.2779591281639619, -0.00500836694199178, 0.1470405090121656, 0.046699368001686205, -0.024925654707476496, 0.01668539720897873, 0.05237429475204812, -0.05295329577768118, -0.21708430650178343, 0.3417044093625413, 0.0753600192670193, 0.22043063067313698, 0.05927672036406067, 0.04013066798345082, 0.026989419592751397, -0.03984929956495762, 0.03680323761784368, -0.03214568663695698, -0.014516462478786707, 0.2009902850828237, -0.021168258524913754, 0.17980867707067066, -0.4141001771721575, -0.19296012099625337, 0.09143473256586326, 0.16730038916381698, 0.1429534020768996, -0.09737069281852907, -0.2699928391000463, 0.04067169532386793, -0.17485283681501945, -0.16431678513892822, -0.04388983329344127, -0.04728785246714122, -0.013637531641870737, -0.351294254242546, 0.09421395784657863, 0.019272498822667534, -0.04539503030375474, -0.03575815793463132, -0.11486085769202974, 0.004419580901352068, 0.05765998670313921, 0.11632817812367446, 0.11371295392099354, 0.17253974689277432, -0.18443889296872334, -0.07824822651972581, 0.4494275901880529, -0.11403967973569201, -0.18749513073513904, 0.12314546153259774, -0.22782171794937717, -0.0894795117718685, 0.19071676399972703, 0.17966231986776823, 0.11972749334139128, -0.2041187472641468, 0.1655379831215315, -0.059136401447984904, 0.14527320664039708, 0.03110926389021592, 0.04832609739258058, 0.24739551354303127, 0.15251890127029682, 0.008483576557288567, 0.09679675843928837, -0.09911250208194057, -0.030725402555738888, -0.38051857101834485, -0.13572920510131453, -0.12427626732452256, 0.06471645751347145, -0.07148838231401491, -0.19092211385981905, 0.4022943429131475, 0.1608201552007813, 0.12078114498096208, -0.06694405917207608, 0.3506287134355969, 0.13837368636417927, 0.03326357424052225, 0.10480227909154362, 0.3050519844620592, 0.23765939240240389, 0.139037768697987, -0.23557962440471683, -0.02538755419664085, 0.06314632664952013] |
711.2047 | Observation of Y(3940) -> J/psi omega in B -> J/psi omega K at BABAR | We present a study of the decays $B^{0,+}\to J/\psi\omega K^{0,+}$ using
$383\times 10^{6}$ $B\bar{B}$ events obtained with the \babar detector at
PEP-II. We observe $Y(3940) \to J/\psi \omega$, with mass $3914.6
^{+3.8}_{-3.4} (stat) \pm{2.0} (syst)$ \mevcc, and width
$34^{+12}_{-8}(stat)\pm{5}(syst)$ \mev. The ratio of $B^0$ and $B^+$ decay to
$YK$ is $0.27^{+0.28}_{-0.23}(stat)^{+0.04}_{-0.01}(syst)$, and the relevant
$B^0$ and $B^+$ branching fractions are reported.
| hep-ex | we present a study of the decays b0to jpsiomega k0 using 383times 106 bbarb events obtained with the babar detector at pepii we observe y3940 to jpsi omega with mass 39146 38_34 stat pm20 syst mevcc and width 3412_8statpm5syst mev the ratio of b0 and b decay to yk is 027028_023stat004_001syst and the relevant b0 and b branching fractions are reported | [['we', 'present', 'a', 'study', 'of', 'the', 'decays', 'b0to', 'jpsiomega', 'k0', 'using', '383times', '106', 'bbarb', 'events', 'obtained', 'with', 'the', 'babar', 'detector', 'at', 'pepii', 'we', 'observe', 'y3940', 'to', 'jpsi', 'omega', 'with', 'mass', '39146', '38_34', 'stat', 'pm20', 'syst', 'mevcc', 'and', 'width', '3412_8statpm5syst', 'mev', 'the', 'ratio', 'of', 'b0', 'and', 'b', 'decay', 'to', 'yk', 'is', '027028_023stat004_001syst', 'and', 'the', 'relevant', 'b0', 'and', 'b', 'branching', 'fractions', 'are', 'reported']] | [-0.12794427380971943, 0.22226822582472647, -0.04127029189008421, 0.07895515213229894, -0.02346206111178617, -0.14961875099522462, 0.11280747419680535, 0.2786722001536483, -0.12538507780326263, -0.24887280791465724, -0.07987764846516907, -0.4619510679372719, 0.11350407079693728, 0.1139877123246801, 0.0656639243742185, 0.14997812046203762, 0.1583508809396465, -0.013134641132117915, -0.03736043783802805, -0.13844025595712342, 0.1179029520467988, -0.025742293119297495, 0.17497435944720305, 0.08758748758451215, -0.07305128757642317, -0.04478705182139363, -0.04969417400258992, -0.12880480928080423, -0.30567665237634045, -0.02866317786642217, 0.21927758789804233, 0.12810792847137367, 0.06561312977490681, -0.20514390274183825, 0.12845097089718496, 0.21706476570190197, 0.1691985480470716, -0.05060283404808225, 0.03485316430617656, -0.48363786689671023, 0.2650546657719782, -0.1594642412466263, 0.004072475879053984, -0.0024977359654647963, 0.11661484020961714, -0.13537066197438566, -0.41136642013277325, 0.23626952876137303, -0.14340156350018723, 0.03696638951078057, -0.001740712098710771, -0.35103084913030863, -0.015508386115210928, -0.09635281706661251, 0.09561270370198015, 0.1701842994038348, 0.22767937188369355, -0.02573655633230893, -0.17670150811318308, 0.37147922181923476, -0.09709896177186497, -0.11204735908125128, 0.1102498564203935, -0.3132232705912819, -0.11952303621884701, 0.22517019124435528, 0.22672538433523318, 0.04870652710503366, -0.18661032713550543, 0.11207887452578039, -0.01846686444644417, 0.19285989309927182, 0.1406033093725065, 0.08292003434949688, 0.1233794097289709, 0.19599756199334348, -0.07479711921353425, 0.061738590013452006, -0.18188647786155343, 0.025651744101196527, -0.40716742884459173, -0.10816492668319759, 0.01310535908019769, 0.17197618282599642, 0.012201727065465613, -0.019069639504388242, 0.28376904532446395, -0.03780084736146299, 0.409710353639509, 0.025562902359524742, 0.2652354504597107, 0.0844426286556492, -0.0021028382574773525, 0.11621557601029053, 0.2992478495164375, 0.28409717361708836, 0.18026194485303546, -0.3207996680721408, 0.02880135440084684, -0.057440341757943054] |
711.2048 | Nucleon Structure from Lattice QCD | Recent advances in lattice field theory, in computer technology and in chiral
perturbation theory have enabled lattice QCD to emerge as a powerful
quantitative tool in understanding hadron structure. I describe recent progress
in the computation of the nucleon form factors and moments of parton
distribution functions, before proceeding to describe lattice studies of the
Generalized Parton Distributions (GPDs). In particular, I show how lattice
studies of GPDs contribute to building a three-dimensional picture of the
proton. I conclude by describing the prospects for studying the structure of
resonances from lattice QCD.
| nucl-th hep-lat | recent advances in lattice field theory in computer technology and in chiral perturbation theory have enabled lattice qcd to emerge as a powerful quantitative tool in understanding hadron structure i describe recent progress in the computation of the nucleon form factors and moments of parton distribution functions before proceeding to describe lattice studies of the generalized parton distributions gpds in particular i show how lattice studies of gpds contribute to building a threedimensional picture of the proton i conclude by describing the prospects for studying the structure of resonances from lattice qcd | [['recent', 'advances', 'in', 'lattice', 'field', 'theory', 'in', 'computer', 'technology', 'and', 'in', 'chiral', 'perturbation', 'theory', 'have', 'enabled', 'lattice', 'qcd', 'to', 'emerge', 'as', 'a', 'powerful', 'quantitative', 'tool', 'in', 'understanding', 'hadron', 'structure', 'i', 'describe', 'recent', 'progress', 'in', 'the', 'computation', 'of', 'the', 'nucleon', 'form', 'factors', 'and', 'moments', 'of', 'parton', 'distribution', 'functions', 'before', 'proceeding', 'to', 'describe', 'lattice', 'studies', 'of', 'the', 'generalized', 'parton', 'distributions', 'gpds', 'in', 'particular', 'i', 'show', 'how', 'lattice', 'studies', 'of', 'gpds', 'contribute', 'to', 'building', 'a', 'threedimensional', 'picture', 'of', 'the', 'proton', 'i', 'conclude', 'by', 'describing', 'the', 'prospects', 'for', 'studying', 'the', 'structure', 'of', 'resonances', 'from', 'lattice', 'qcd']] | [-0.05918560964662744, 0.19440051592106972, -0.14657883608774486, 0.07716540972013837, -0.06636297868301524, -0.035866266037413407, 0.016624830043166065, 0.3795453545070537, -0.21963840054915004, -0.19683129081259604, -0.0010742138357549582, -0.2640421897598097, -0.14524416312696817, 0.11858682966102725, 0.06129236871145068, 0.09599950188851875, 0.07180460098417192, -0.0455139838108469, -0.06937507310193843, -0.21361884709103438, 0.33538004350544803, 0.05759877600560329, 0.2845898777367952, 0.15438984935146594, 0.01222062800408584, 0.061903872314597604, -0.09364590598978913, -0.016634233193421413, -0.18317830974980176, 0.17687390612073892, 0.26200383967902185, 0.10762511527813647, 0.16553194118845885, -0.4912824144020029, -0.22855837835484874, -0.00837616373926563, 0.14164084963356247, 0.15993374402624677, -0.047907205369404474, -0.24218252768902027, 0.03890329032361953, -0.23911063681336361, -0.22498818355835165, -0.18270651941471125, 0.000271127742725303, 0.014629014544998821, -0.23964420618216062, 0.03098344772487231, 0.014858803833308428, 0.08526622874848291, 0.01814462790650356, -0.2072438736061525, 0.034472763968591134, 0.08488109191555691, 0.07437702911177083, 0.11526079960774792, 0.10598317973578916, -0.2627480212812889, -0.2118669731501976, 0.4353980091906598, -0.008137070087958937, -0.13991351913832856, 0.08353297627004592, -0.24388616159052143, -0.20949601152729566, 0.08204870154757214, 0.23128057625549642, 0.06300900589026835, -0.16396147207200082, 0.14068758311433435, -0.018793924387706364, 0.11618427002837922, 0.03714102976854243, 0.0698497289761334, 0.24971424337759937, 0.20095025665005264, -0.0511498025886755, 0.0717600580588307, -0.009616643519383733, -0.17333539423492292, -0.3125333418138325, -0.11015498974239049, -0.16806461100476672, 0.08645740881405325, -0.03650432455564758, -0.14504038617419807, 0.38864781181884767, 0.13147602203737377, 0.2245073965953096, -0.05627743750000778, 0.25442850061327865, 0.06427555507853748, 0.06319230998886506, 0.016751919029047713, 0.20787480244736956, 0.21981263156909414, 0.12316268844195925, -0.2196729741155413, -0.022604460035875927, 0.11225063525869147] |
711.2049 | The role of the atom-cavity detuning in bimodal cavity experiments | The coherent evolution of the atom-cavity state in bimodal (cavity)
experiments has been analyzed for a realistic time-dependence in detuning the
atomic transition frequency. Apart from a `smooth switch' of the atomic
resonance from one to the second mode of a bimodal cavity, we considered also
an additional (effective) interaction between the field modes of the cavity,
known as `communication channel'. Comparison of our model computations has been
made especially with the measurements by Rauschenbeutel et al., [2001 Phys.
Rev. A 64 050301] who demonstrated for the first time the entanglement of the
field modes in a bimodal cavity. It is shown that the agreement between the
(theoretically) predicted and experimental phase shifts can be improved by
allowing a `communication' between the two field modes during a short but
finite switch of the atomic transition frequency from one mode to the other. We
therefore suggest that the details of the atom-cavity detuning should be taken
into account for the future interpretation of bimodal cavity experiments.
| quant-ph | the coherent evolution of the atomcavity state in bimodal cavity experiments has been analyzed for a realistic timedependence in detuning the atomic transition frequency apart from a smooth switch of the atomic resonance from one to the second mode of a bimodal cavity we considered also an additional effective interaction between the field modes of the cavity known as communication channel comparison of our model computations has been made especially with the measurements by rauschenbeutel et al 2001 phys rev a 64 050301 who demonstrated for the first time the entanglement of the field modes in a bimodal cavity it is shown that the agreement between the theoretically predicted and experimental phase shifts can be improved by allowing a communication between the two field modes during a short but finite switch of the atomic transition frequency from one mode to the other we therefore suggest that the details of the atomcavity detuning should be taken into account for the future interpretation of bimodal cavity experiments | [['the', 'coherent', 'evolution', 'of', 'the', 'atomcavity', 'state', 'in', 'bimodal', 'cavity', 'experiments', 'has', 'been', 'analyzed', 'for', 'a', 'realistic', 'timedependence', 'in', 'detuning', 'the', 'atomic', 'transition', 'frequency', 'apart', 'from', 'a', 'smooth', 'switch', 'of', 'the', 'atomic', 'resonance', 'from', 'one', 'to', 'the', 'second', 'mode', 'of', 'a', 'bimodal', 'cavity', 'we', 'considered', 'also', 'an', 'additional', 'effective', 'interaction', 'between', 'the', 'field', 'modes', 'of', 'the', 'cavity', 'known', 'as', 'communication', 'channel', 'comparison', 'of', 'our', 'model', 'computations', 'has', 'been', 'made', 'especially', 'with', 'the', 'measurements', 'by', 'rauschenbeutel', 'et', 'al', '2001', 'phys', 'rev', 'a', '64', '050301', 'who', 'demonstrated', 'for', 'the', 'first', 'time', 'the', 'entanglement', 'of', 'the', 'field', 'modes', 'in', 'a', 'bimodal', 'cavity', 'it', 'is', 'shown', 'that', 'the', 'agreement', 'between', 'the', 'theoretically', 'predicted', 'and', 'experimental', 'phase', 'shifts', 'can', 'be', 'improved', 'by', 'allowing', 'a', 'communication', 'between', 'the', 'two', 'field', 'modes', 'during', 'a', 'short', 'but', 'finite', 'switch', 'of', 'the', 'atomic', 'transition', 'frequency', 'from', 'one', 'mode', 'to', 'the', 'other', 'we', 'therefore', 'suggest', 'that', 'the', 'details', 'of', 'the', 'atomcavity', 'detuning', 'should', 'be', 'taken', 'into', 'account', 'for', 'the', 'future', 'interpretation', 'of', 'bimodal', 'cavity', 'experiments']] | [-0.14718456211479994, 0.17025958120096377, -0.09990478120673243, -0.002267473884829797, -0.026172076038187143, -0.15884554550078664, 0.07793983218910332, 0.39826174265500613, -0.21372481659849787, -0.29510072757569483, 0.03604067870339083, -0.23888347524490844, -0.1118821018551499, 0.22180962835001283, 0.01225519803545733, 0.03927590698003769, 0.055606030620543694, 0.019390254758480118, -0.010709921585214211, -0.17192464439970692, 0.262450527953461, 0.0737317414193346, 0.30095576418836306, 0.03946204589560583, 0.06880248589270817, -0.02065451037551833, 0.028750981516545503, -0.003460340661837197, -0.10630417406506107, 0.04814981590820158, 0.2223130353252977, 0.052612279257850676, 0.27506296903962585, -0.4320191578292174, -0.2262825676120772, 0.08399597868371596, 0.16312227801085455, 0.16784089037626074, -0.042619923680521005, -0.3303789716986258, -0.015461047485232263, -0.17917606014213183, -0.11537012983153988, -0.034752217232158815, 0.06355217486128734, 0.0038465208772267053, -0.29966253111502383, 0.05639294024326884, 0.055242618868161536, 0.05529606706326509, -0.03907431925720785, -0.05450978385080106, -0.02720337859695641, 0.11980843494600821, -0.002673777727534066, 0.03598161125640816, 0.1196584193754328, -0.09169882358188128, -0.1115610098080119, 0.35674479945630927, -0.09384421152971321, -0.11274636351707869, 0.18489194316995364, -0.16030931972370416, -0.04926953024923711, 0.12694854476693562, 0.12617954009683893, 0.055023016314385685, -0.11522626042473925, 0.0411663433113107, -0.026706722685669707, 0.21037926757708192, 0.08717803230293368, 0.06578788357156311, 0.20434374880704392, 0.15251912774586276, -0.024116874405569057, 0.15958071263718543, -0.10208254263923708, -0.11502240641822005, -0.2734079082246597, -0.12196114594571111, -0.2113524025157747, 0.015742015496759517, -0.04130568829208553, -0.09378998313846618, 0.42398641142062843, 0.1282063069861246, 0.20610065827509616, -0.02132788683832964, 0.3018693322991589, 0.12798968041755782, 0.0850163294788927, 0.033697349090333575, 0.3468385990481915, 0.15701801398848525, 0.09074404733482658, -0.2910016974061231, 0.02631739046844858, -0.03611087561840555] |
711.205 | Two Families of Quantum Codes Derived from Cyclic Codes | We characterize the affine-invariant maximal extended cyclic codes. Then by
the CSS construction, we derive from these codes a family of pure quantum
codes. Also for ordnq even, a new family of degenerate quantum stabilizer codes
is derived from the classical duadic codes. This answer an open problem asked
by Aly et al.
| cs.IT math.IT | we characterize the affineinvariant maximal extended cyclic codes then by the css construction we derive from these codes a family of pure quantum codes also for ordnq even a new family of degenerate quantum stabilizer codes is derived from the classical duadic codes this answer an open problem asked by aly et al | [['we', 'characterize', 'the', 'affineinvariant', 'maximal', 'extended', 'cyclic', 'codes', 'then', 'by', 'the', 'css', 'construction', 'we', 'derive', 'from', 'these', 'codes', 'a', 'family', 'of', 'pure', 'quantum', 'codes', 'also', 'for', 'ordnq', 'even', 'a', 'new', 'family', 'of', 'degenerate', 'quantum', 'stabilizer', 'codes', 'is', 'derived', 'from', 'the', 'classical', 'duadic', 'codes', 'this', 'answer', 'an', 'open', 'problem', 'asked', 'by', 'aly', 'et', 'al']] | [-0.11801476312729602, 0.12166428755181886, -0.04980783583596349, 0.12510502537210974, 0.02137396579536681, -0.2549385206344036, 0.05419396214151325, 0.2999968430600487, -0.3628764310627818, -0.25678914070774156, 0.11806507012135206, -0.22240861870635015, -0.18465063366322562, 0.264157221334664, -0.16874603357595894, 0.11376689027887411, 0.06483991711418359, -0.020779659380563177, -0.15754970412504357, -0.35824073639769966, 0.3694884347407004, 0.14812418089087048, 0.21404890408023045, -0.055188838338765964, 0.055512445351968594, 0.00037986863082131516, -0.04826112506158937, -0.010409272356460301, -0.26896750511010536, 0.11692274682214841, 0.2792342873290181, 0.1711448723754774, 0.15058604606355613, -0.2862332785108055, -0.23467143171393007, 0.08230183547577606, 0.09338592985071816, 0.2651430594448287, -0.08429864089255436, -0.24185339726794225, 0.12090475187421991, -0.2425487375764463, -0.08839299601431076, 0.004544061536972339, 0.002884281835017296, -0.038964523978603, -0.2605888741090894, -0.03987346107840914, 0.12456540372939064, 0.09683006015033103, -0.02076787739105594, -0.127763140337685, 0.06451463907992896, 0.08492167433723807, -0.13690446054745456, 0.03112294242824786, -0.02434147040073115, -0.010801544045814527, -0.21139149071397975, 0.3131159414031292, -0.022793304569159564, -0.17801883262403023, 0.12137982084039742, -0.008004307120035473, -0.14532160595095214, 0.08375872611605491, 0.16616057472016948, 0.15165171963879123, -0.12176998750846206, 0.195863605530646, -0.15989941752587372, 0.1253397715918254, 0.11090233507834804, 0.082442542233576, 0.17996574186075193, -0.051207713216382005, 0.02676003657353039, 0.22014266019687057, 0.015831457159947604, -0.08152681649684942, -0.27856409268525356, -0.146038202894068, -0.16890780027293098, 0.13180086573657507, -0.06299110355142218, -0.20599939285490948, 0.3911491520523738, 0.08643788509764888, 0.08350813211514972, 0.0812316007930069, 0.157852664258546, -0.009797178226738023, 0.060748196027886406, 0.25075015108002563, 0.1365192953425531, 0.2201258894503833, -0.08221298234107402, -0.2116810189327225, 0.005273124865757732, 0.17034518816329253] |
711.2051 | Comment on`` Angular dependence of Dicke-narrowed electromagnetically
induced transparency resonances'' | We demonstrate that the experimental results reported by M. Shuker, O.
Firstenberg, R. Pugatch, A. Ben-Kish,1 A. Ron, and N. Davidson, Phys. Rev. A
{\bf 76}, 023813 (2007) as Dicke narrowing of electromagnetically induced
transparency, does not match with theory.
| physics.optics physics.atom-ph | we demonstrate that the experimental results reported by m shuker o firstenberg r pugatch a benkish1 a ron and n davidson phys rev a bf 76 023813 2007 as dicke narrowing of electromagnetically induced transparency does not match with theory | [['we', 'demonstrate', 'that', 'the', 'experimental', 'results', 'reported', 'by', 'm', 'shuker', 'o', 'firstenberg', 'r', 'pugatch', 'a', 'benkish1', 'a', 'ron', 'and', 'n', 'davidson', 'phys', 'rev', 'a', 'bf', '76', '023813', '2007', 'as', 'dicke', 'narrowing', 'of', 'electromagnetically', 'induced', 'transparency', 'does', 'not', 'match', 'with', 'theory']] | [-0.08391867915966682, 0.13919496115829263, 0.003634802597974028, -0.10028748142399958, -0.0664139079861343, -0.14144094055518508, 0.11252544996927359, 0.3582841167226434, -0.0575519859790802, -0.36146757443036354, -0.11463150090671011, -0.2612919860652515, -0.18705193023529967, 0.15129981271124313, -0.1326340904326311, -0.003700620468173708, 0.040118188331169743, -0.04747157660978181, -0.030897964530491404, -0.24781967398843596, 0.10730974917699183, 0.12452854349144868, 0.28675246079053196, 0.08434326451803957, 0.03769004185284887, 0.054461527868573154, 0.015562234739107745, 0.04510128048381635, -0.19854404773276266, 0.03804241312401635, 0.1917476951543774, 0.12160683178475924, 0.24744544425713164, -0.3247221721070153, -0.20684919826952475, 0.07865199648908207, 0.040440345209624085, 0.13649419970544321, -0.008938008872792124, -0.43280513302556106, 0.05735162406760667, -0.2385134965447443, -0.10048290928825736, -0.1176690825926406, 0.18018087571752922, 0.0013735498434730938, -0.3507930167152413, 0.07806947614465441, 0.13839996701904705, 0.06508313989532845, 0.01078461054712534, -0.11486917834679064, -0.035684709490409916, -0.11823366517201066, -0.14307553273226534, 0.08675511758109289, 0.09450725128741137, -0.005255416567836489, -0.19874751993588038, 0.3554660395852157, -0.17110529637762478, -0.060404581337102824, 0.20918980802276305, -0.1355421460765813, -0.03284958071474518, 0.08308785419378961, 0.042198198089109996, 0.14995634675558125, -0.07851240738694157, 0.23460302821061174, -0.17466091202305897, 0.17534680893378599, 0.17618519490850823, 0.0023483567605061192, 0.08023213459444897, 0.021577224561146326, -0.061624852953744785, 0.04528563994515155, -0.07661165281065872, -0.04370577351323196, -0.32061834931373595, -0.12402372277740921, -0.24486757532826492, 0.15651059593115602, 0.04307727563635646, -0.11096576691738197, 0.3414413031190634, 0.12295846494713, 0.31167948873979706, -0.03501018479998622, 0.16124794371426104, 0.0525678509546976, -0.031842453338737996, 0.19200417601636477, 0.27063148181353297, 0.1942236673685589, 0.11890098771878652, -0.3033906627446413, -0.03701683241607887, 0.043720717621701106] |
711.2052 | Computation and visualization of photonic quasicrystal spectra via
Blochs theorem | Previous methods for determining photonic quasicrystal (PQC) spectra have
relied on the use of large supercells to compute the eigenfrequencies and/or
local density of states (LDOS). In this manuscript, we present a method by
which the energy spectrum and the eigenstates of a PQC can be obtained by
solving Maxwells equations in higher dimensions for any PQC defined by the
standard cut-and-project construction, to which a generalization of Blochs
theorem applies. In addition, we demonstrate how one can compute band
structures with defect states in the higher-dimensional superspace with no
additional computational cost. As a proof of concept, these general ideas are
demonstrated for the simple case of one-dimensional quasicrystals, which can
also be solved by simple transfer-matrix techniques.
| physics.optics | previous methods for determining photonic quasicrystal pqc spectra have relied on the use of large supercells to compute the eigenfrequencies andor local density of states ldos in this manuscript we present a method by which the energy spectrum and the eigenstates of a pqc can be obtained by solving maxwells equations in higher dimensions for any pqc defined by the standard cutandproject construction to which a generalization of blochs theorem applies in addition we demonstrate how one can compute band structures with defect states in the higherdimensional superspace with no additional computational cost as a proof of concept these general ideas are demonstrated for the simple case of onedimensional quasicrystals which can also be solved by simple transfermatrix techniques | [['previous', 'methods', 'for', 'determining', 'photonic', 'quasicrystal', 'pqc', 'spectra', 'have', 'relied', 'on', 'the', 'use', 'of', 'large', 'supercells', 'to', 'compute', 'the', 'eigenfrequencies', 'andor', 'local', 'density', 'of', 'states', 'ldos', 'in', 'this', 'manuscript', 'we', 'present', 'a', 'method', 'by', 'which', 'the', 'energy', 'spectrum', 'and', 'the', 'eigenstates', 'of', 'a', 'pqc', 'can', 'be', 'obtained', 'by', 'solving', 'maxwells', 'equations', 'in', 'higher', 'dimensions', 'for', 'any', 'pqc', 'defined', 'by', 'the', 'standard', 'cutandproject', 'construction', 'to', 'which', 'a', 'generalization', 'of', 'blochs', 'theorem', 'applies', 'in', 'addition', 'we', 'demonstrate', 'how', 'one', 'can', 'compute', 'band', 'structures', 'with', 'defect', 'states', 'in', 'the', 'higherdimensional', 'superspace', 'with', 'no', 'additional', 'computational', 'cost', 'as', 'a', 'proof', 'of', 'concept', 'these', 'general', 'ideas', 'are', 'demonstrated', 'for', 'the', 'simple', 'case', 'of', 'onedimensional', 'quasicrystals', 'which', 'can', 'also', 'be', 'solved', 'by', 'simple', 'transfermatrix', 'techniques']] | [-0.08348441643624746, 0.10500067596112479, -0.08482050112675593, 0.05617661142874384, -0.05363365782409155, -0.13701470217377948, 0.025452625153179306, 0.35087632665708035, -0.23844391062949635, -0.30549109943148467, 0.09190900203137964, -0.22440611697858623, -0.17509110127927877, 0.22316192191078507, -0.041126004377176534, 0.07103622175690506, 0.050387767933233504, -0.0122441707625046, -0.10670990560706627, -0.23027592967068697, 0.30490937094035864, 0.026419845591651416, 0.27854366004153963, 0.049999082061861246, 0.05901452001700757, 0.020605850884565662, 0.01934427200980923, 0.042030229147116675, -0.12262869543912468, 0.1751424521471945, 0.2794208273197673, 0.050885229911498665, 0.21086597671153165, -0.45853887329331966, -0.23784004333169795, 0.0664019843841269, 0.15697543593045293, 0.17597216583823613, -0.046122975802996014, -0.27180812564021084, 0.08015831714856024, -0.14698223170957395, -0.1802266566630672, -0.1521679714367091, -0.038492387583275806, -0.007618921135841799, -0.21611124750602395, 0.0632385308714877, 0.05228558573245752, 0.05801620523060355, -0.050053018020043354, -0.08965618576083582, -0.02363156173143442, 0.048271302485979405, -0.02381125308706292, -0.030751812373514938, 0.08411871353477365, -0.07207252591370973, -0.1849786937628098, 0.4000089757238366, -0.05529093080270691, -0.24750718761024168, 0.1537033665001768, -0.0948102070730837, -0.12923076881502732, 0.12523122149824845, 0.13039006388300106, 0.13927135201750182, -0.1285780709033378, 0.13572035075562514, -0.07759550942925877, 0.1582589772578325, 0.10422310082974624, 0.037641501572167016, 0.16688722101658457, 0.09286071166216138, 0.05978676277024969, 0.15983681879867212, -0.02527293345123968, -0.07214141794002983, -0.2697316344451754, -0.1667900058940276, -0.25106378709662613, 0.055726675653219725, -0.07651879059670771, -0.18491151581416612, 0.41656294659155757, 0.10156195792721726, 0.16776233095237436, 0.054502056366685744, 0.2598051101658024, 0.18123347363376036, 0.09606938460888732, 0.06051176112583455, 0.21956411320148742, 0.1271017368828111, 0.063247870092335, -0.18785053192630036, -0.030302039535418778, 0.12873103994946583] |
711.2053 | Modeling the cosmological co-evolution of supermassive black holes and
galaxies: I. BH scaling relations and the AGN luminosity function | We model the cosmological co-evolution of galaxies and their central
supermassive black holes (BHs) within a semi-analytical framework developed on
the outputs of the Millennium Simulation. This model, described in detail in
Croton et al. (2006) and De Lucia & Blaizot (2007), introduces a `radio mode'
feedback from Active Galactic Nuclei (AGN) at the centre of X-ray emitting
atmospheres in galaxy groups and clusters. Thanks to this mechanism, the model
can simultaneously explain: (i) the low observed mass drop-out rate in cooling
flows; (ii) the exponential cut-off in the bright end of the galaxy luminosity
function; and (iii) the bulge-dominated morphologies and old stellar ages of
the most massive galaxies in clusters. This paper is the first of a series in
which we investigate how well this model can also reproduce the physical
properties of BHs and AGN. Here we analyze the scaling relations, the
fundamental plane and the mass function of BHs, and compare them with the most
recent observational data. Moreover, we extend the semi-analytic model to
follow the evolution of the BH mass accretion and its conversion into
radiation, and compare the derived AGN bolometric luminosity function with the
observed one. While we find for the most part a very good agreement between
predicted and observed BH properties, the semi-analytic model underestimates
the number density of luminous AGN at high redshifts, independently of the
adopted Eddington factor and accretion efficiency. However, an agreement with
the observations is possible within the framework of our model, provided it is
assumed that the cold gas fraction accreted by BHs at high redshifts is larger
than at low redshifts.
| astro-ph | we model the cosmological coevolution of galaxies and their central supermassive black holes bhs within a semianalytical framework developed on the outputs of the millennium simulation this model described in detail in croton et al 2006 and de lucia blaizot 2007 introduces a radio mode feedback from active galactic nuclei agn at the centre of xray emitting atmospheres in galaxy groups and clusters thanks to this mechanism the model can simultaneously explain i the low observed mass dropout rate in cooling flows ii the exponential cutoff in the bright end of the galaxy luminosity function and iii the bulgedominated morphologies and old stellar ages of the most massive galaxies in clusters this paper is the first of a series in which we investigate how well this model can also reproduce the physical properties of bhs and agn here we analyze the scaling relations the fundamental plane and the mass function of bhs and compare them with the most recent observational data moreover we extend the semianalytic model to follow the evolution of the bh mass accretion and its conversion into radiation and compare the derived agn bolometric luminosity function with the observed one while we find for the most part a very good agreement between predicted and observed bh properties the semianalytic model underestimates the number density of luminous agn at high redshifts independently of the adopted eddington factor and accretion efficiency however an agreement with the observations is possible within the framework of our model provided it is assumed that the cold gas fraction accreted by bhs at high redshifts is larger than at low redshifts | [['we', 'model', 'the', 'cosmological', 'coevolution', 'of', 'galaxies', 'and', 'their', 'central', 'supermassive', 'black', 'holes', 'bhs', 'within', 'a', 'semianalytical', 'framework', 'developed', 'on', 'the', 'outputs', 'of', 'the', 'millennium', 'simulation', 'this', 'model', 'described', 'in', 'detail', 'in', 'croton', 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711.2054 | AP Theory II:Intrinsic 4D Quantum YM Theory with Mass Gap | We describe a sub-theory of Artin Presentation Theory (AP Theory), which has
many genuine,discrete,group-theoretic,non-infinitesimal, qualitative analogues
(including with the mass gap) of the main desiderata of the hypothetical
quantitative infinitesimal '4D Quantum YM Theory' for the so-called Clay
Millenium 'YM Existence and Mass Gap' problem. Our entirely mathematically
rigorous theory is not a model, no new axioms or measures are introduced,does
not rely on SUSY,is free of smooth 4D singularities,moduli spaces,path
integrals, graph/lattice combinatorics and probabilistic,category,twistor or
topos arguments and is intimately related to the theory of pure framed braids.
Despite being based on a rigorous, radical,universal Holographic Principle,the
theory still contains an analogue of Donaldson/Seiberg-Witten Theory, an
infinitely generated, at each stage, graded group of topology-changing
transitions and interactions and more. Our main contention is: the
radical,universal AP-holography, with its strong topology changing
interactions, which reach all the way to the 'vacuum' of discrete group theory,
may destroy any infinitesimal, PDE based Field Theory,required for solving the
actual Clay YM problem in its present quantitative form as a problem of
so-called 'constructive' 3+1 QFT. More generally,due to the fact that AP Theory
is not a model,e.g., does not introduce any new axioms,any rigorous axiomatic
3+1 QFT has to align itself with it in a mathematically rigorous fashion.
| math.GM | we describe a subtheory of artin presentation theory ap theory which has many genuinediscretegrouptheoreticnoninfinitesimal qualitative analogues including with the mass gap of the main desiderata of the hypothetical quantitative infinitesimal 4d quantum ym theory for the socalled clay millenium ym existence and mass gap problem our entirely mathematically rigorous theory is not a model no new axioms or measures are introduceddoes not rely on susyis free of smooth 4d singularitiesmoduli spacespath integrals graphlattice combinatorics and probabilisticcategorytwistor or topos arguments and is intimately related to the theory of pure framed braids despite being based on a rigorous radicaluniversal holographic principlethe theory still contains an analogue of donaldsonseibergwitten theory an infinitely generated at each stage graded group of topologychanging transitions and interactions and more our main contention is the radicaluniversal apholography with its strong topology changing interactions which reach all the way to the vacuum of discrete group theory may destroy any infinitesimal pde based field theoryrequired for solving the actual clay ym problem in its present quantitative form as a problem of socalled constructive 31 qft more generallydue to the fact that ap theory is not a modeleg does not introduce any new axiomsany rigorous axiomatic 31 qft has to align itself with it in a mathematically rigorous fashion | [['we', 'describe', 'a', 'subtheory', 'of', 'artin', 'presentation', 'theory', 'ap', 'theory', 'which', 'has', 'many', 'genuinediscretegrouptheoreticnoninfinitesimal', 'qualitative', 'analogues', 'including', 'with', 'the', 'mass', 'gap', 'of', 'the', 'main', 'desiderata', 'of', 'the', 'hypothetical', 'quantitative', 'infinitesimal', '4d', 'quantum', 'ym', 'theory', 'for', 'the', 'socalled', 'clay', 'millenium', 'ym', 'existence', 'and', 'mass', 'gap', 'problem', 'our', 'entirely', 'mathematically', 'rigorous', 'theory', 'is', 'not', 'a', 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711.2055 | SWAS Observations of Water in Molecular Outflows | We present SWAS detections of the ground-state 1(10)-1(01) transition of
o-H2O at 557 GHz in 18 molecular outflows. These results are combined with
ground-based observations of the J=1-0 transitions of 12CO and 13CO obtained at
the FCRAO and, for a subset of the outflows, data from ISO. Assuming the SWAS
water line emission originates from the same gas traced by CO emission, we find
that the outflowing gas in most outflows has an o-H2O abundance relative to H2
of between 10(-7) and 10(-6). Analysis of the water abundance as a function of
outflow velocity reveals a strong dependence. The water abundance increases
with velocity, and at the highest outflow velocities some outflows have
relative o-H2O abundances of order 10(-4). However the mass of gas with such
elevated water abundances represents less that 1% of the total outflow gas
mass. The ISO LWS observations of high-J rotational lines of CO and the 179.5
micron transition of o-H2O provide evidence for a warmer outflow component than
required to produce either the SWAS or FCRAO lines. The mass associated with
the ISO emission is similar to that responsible for the highest velocity water
emission detected by SWAS. The bulk of the outflowing gas has an abundance of
o-H2O well below what would be expected if the gas has passed through a C-shock
with shock velocities greater than 10 km/s. Gas-phase water can be depleted in
the post-shock gas due to freeze-out onto grain mantles, however the rate of
freeze-out is too slow to explain our results. Therefore we believe that only a
small fraction of the outflowing molecular gas has passed through shocks strong
enough to fully convert the gas-phase oxygen to water. This result has
implications for the acceleration mechanism of the molecular gas in these
outflows.
| astro-ph | we present swas detections of the groundstate 110101 transition of oh2o at 557 ghz in 18 molecular outflows these results are combined with groundbased observations of the j10 transitions of 12co and 13co obtained at the fcrao and for a subset of the outflows data from iso assuming the swas water line emission originates from the same gas traced by co emission we find that the outflowing gas in most outflows has an oh2o abundance relative to h2 of between 107 and 106 analysis of the water abundance as a function of outflow velocity reveals a strong dependence the water abundance increases with velocity and at the highest outflow velocities some outflows have relative oh2o abundances of order 104 however the mass of gas with such elevated water abundances represents less that 1 of the total outflow gas mass the iso lws observations of highj rotational lines of co and the 1795 micron transition of oh2o provide evidence for a warmer outflow component than required to produce either the swas or fcrao lines the mass associated with the iso emission is similar to that responsible for the highest velocity water emission detected by swas the bulk of the outflowing gas has an abundance of oh2o well below what would be expected if the gas has passed through a cshock with shock velocities greater than 10 kms gasphase water can be depleted in the postshock gas due to freezeout onto grain mantles however the rate of freezeout is too slow to explain our results therefore we believe that only a small fraction of the outflowing molecular gas has passed through shocks strong enough to fully convert the gasphase oxygen to water this result has implications for the acceleration mechanism of the molecular gas in these outflows | [['we', 'present', 'swas', 'detections', 'of', 'the', 'groundstate', '110101', 'transition', 'of', 'oh2o', 'at', '557', 'ghz', 'in', '18', 'molecular', 'outflows', 'these', 'results', 'are', 'combined', 'with', 'groundbased', 'observations', 'of', 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711.2056 | Transient Mass-Loss Events in the PG 1159 Central Star of Longmore 4 | A spectacular, transient mass-loss event in the hydrogen-deficient central
star of the planetary nebula Longmore 4 was discovered in 1992 by Werner et al.
During that event, the star temporarily changed from its normal PG 1159
spectrum to that of an emission-line [WCE] star. I have been monitoring the
spectrum of Lo 4 since 2003. Out of 31 spectra, two of them reveal mass-loss
outbursts similar to the one seen in 1992, showing that the phenomenon recurs.
I speculate on possible mechanisms for these unique outbursts, but emphasize
that we still have no fully convincing explanation.
| astro-ph | a spectacular transient massloss event in the hydrogendeficient central star of the planetary nebula longmore 4 was discovered in 1992 by werner et al during that event the star temporarily changed from its normal pg 1159 spectrum to that of an emissionline wce star i have been monitoring the spectrum of lo 4 since 2003 out of 31 spectra two of them reveal massloss outbursts similar to the one seen in 1992 showing that the phenomenon recurs i speculate on possible mechanisms for these unique outbursts but emphasize that we still have no fully convincing explanation | [['a', 'spectacular', 'transient', 'massloss', 'event', 'in', 'the', 'hydrogendeficient', 'central', 'star', 'of', 'the', 'planetary', 'nebula', 'longmore', '4', 'was', 'discovered', 'in', '1992', 'by', 'werner', 'et', 'al', 'during', 'that', 'event', 'the', 'star', 'temporarily', 'changed', 'from', 'its', 'normal', 'pg', '1159', 'spectrum', 'to', 'that', 'of', 'an', 'emissionline', 'wce', 'star', 'i', 'have', 'been', 'monitoring', 'the', 'spectrum', 'of', 'lo', '4', 'since', '2003', 'out', 'of', '31', 'spectra', 'two', 'of', 'them', 'reveal', 'massloss', 'outbursts', 'similar', 'to', 'the', 'one', 'seen', 'in', '1992', 'showing', 'that', 'the', 'phenomenon', 'recurs', 'i', 'speculate', 'on', 'possible', 'mechanisms', 'for', 'these', 'unique', 'outbursts', 'but', 'emphasize', 'that', 'we', 'still', 'have', 'no', 'fully', 'convincing', 'explanation']] | [-0.0581188757084116, 0.06813396227410824, -0.10198237450094894, 0.10148106377649431, -0.08912440633866936, -0.11345024314747813, 0.05195479699371693, 0.4125954481229807, -0.14746016061205106, -0.3321450541140318, 0.09295717826231946, -0.2718218965649915, -0.13272310494600484, 0.20601201100604763, -0.12939521226023012, -0.03861467782371619, 0.09909714265813818, -0.04240377346529082, -0.001351821707430645, -0.2870938439654462, 0.27038863294486265, 0.06790349477917819, 0.13792566141152443, -0.023238978668814525, 0.04933385118298853, -0.07679390514143354, -0.0900541811521786, -0.057031422562431544, -0.1410142298085096, -0.02380623012322758, 0.2239063363352519, 0.16964984233588135, 0.20227914763624236, -0.35765725836002576, -0.24005526601104066, 0.04054757981793955, 0.18143150973325342, 0.020136441125335598, -0.05457758536431356, -0.2527519711875357, 0.045845756874768995, -0.2631763359434747, -0.1538285964076446, 0.04100069824926322, 0.1593892352345089, -0.028667236493978027, -0.1881489712104667, 0.11061816663035036, 0.13380914615117945, 0.08666850290561949, -0.07433364842412023, -0.08349785602088862, -0.10045437988689325, 0.06310164646129124, 0.045455334224243416, 0.033181771953726034, 0.06325888873440515, -0.11124389779676373, -0.11910162211279385, 0.32650534456721897, -0.03005878860130906, 0.0951396034405055, 0.24739994299307, -0.23476191259881793, -0.23395332680956926, 0.20234485059821358, 0.08854507862027579, 0.1102554548997432, -0.18250169710760625, -0.03285826502057413, -0.0461922292112528, 0.1660023318787959, 0.08874161440568666, 0.026400444887258345, 0.29677996347891167, 0.07430220735841431, -0.038340615399647504, 0.06285000359639525, -0.17258514176834674, -0.05368705859533899, -0.21610585493181134, -0.12189298870119576, -0.14585889231724045, 0.11344958757157049, -0.047238051983489036, -0.1058046132287321, 0.3607343119510915, 0.10035162852242745, 0.2129405833935986, -0.08695979413460009, 0.1843841491463536, 0.07957638186538436, 0.0658790996967582, 0.15430109548712304, 0.40066059411037713, 0.13370832907336686, 0.14741115098877344, -0.22917229971062625, 0.10963699788650653, 0.020523646628134884] |
711.2057 | Column and row operator spaces over QSL_p-spaces and their use in
abstract harmonic analysis | The notions of column and row operator space were extended by A. Lambert from
Hilbert spaces to general Banach spaces. In this paper, we use column and row
spaces over quotients of subspaces of general $L_p$-spaces to equip several
Banach algebras occurring naturally in abstract harmonic analysis with
canonical, yet not obvious operator space structures that turn them into
completely bounded Banach algebras. We use these operator space structures to
gain new insights on those algebras.
| math.FA | the notions of column and row operator space were extended by a lambert from hilbert spaces to general banach spaces in this paper we use column and row spaces over quotients of subspaces of general l_pspaces to equip several banach algebras occurring naturally in abstract harmonic analysis with canonical yet not obvious operator space structures that turn them into completely bounded banach algebras we use these operator space structures to gain new insights on those algebras | [['the', 'notions', 'of', 'column', 'and', 'row', 'operator', 'space', 'were', 'extended', 'by', 'a', 'lambert', 'from', 'hilbert', 'spaces', 'to', 'general', 'banach', 'spaces', 'in', 'this', 'paper', 'we', 'use', 'column', 'and', 'row', 'spaces', 'over', 'quotients', 'of', 'subspaces', 'of', 'general', 'l_pspaces', 'to', 'equip', 'several', 'banach', 'algebras', 'occurring', 'naturally', 'in', 'abstract', 'harmonic', 'analysis', 'with', 'canonical', 'yet', 'not', 'obvious', 'operator', 'space', 'structures', 'that', 'turn', 'them', 'into', 'completely', 'bounded', 'banach', 'algebras', 'we', 'use', 'these', 'operator', 'space', 'structures', 'to', 'gain', 'new', 'insights', 'on', 'those', 'algebras']] | [-0.0541724148267684, 0.1221751934407573, -0.055115762007373725, 0.1454330302796351, -0.1420586371402207, -0.09649638633709401, 0.005429557899907722, 0.45457866502692923, -0.4028953796644744, -0.12565453350543976, 0.16368788544787094, -0.2351759033994504, -0.16434831440595812, 0.14839195950250877, -0.18513332909022115, 0.006806855506606792, 0.06235871312674135, 0.007766782759541744, -0.19061007778049985, -0.2930922228582571, 0.5146252221403349, -0.01106582120930972, 0.16373323594023914, -0.040382968114787025, 0.12120787686619319, 0.005873492312323498, -0.059877716439874155, 0.008439981138508301, -0.14197967411373133, 0.17847496443918268, 0.3613046037131234, 0.1036649012546006, 0.2991503936140553, -0.42021680515455573, -0.17022276417303242, 0.20504948506621937, 0.14414002730413095, -0.05017828106218459, 0.00019189179109066332, -0.3108581718498547, -0.02820051031047019, -0.18965722796948334, -0.08084131304885407, -0.16236621223383976, 0.01827290082521933, -0.02753735159670836, -0.2603493999922648, -0.034099348038006086, 0.10738849291872037, 0.0786915022181347, -0.1617072937691486, -0.1277174316928722, -0.054951868712362885, 0.034097049311783756, -0.09613696431839153, 0.03524154401384294, 0.11010732640830898, 0.02612137994545169, -0.1370126451733277, 0.3308196126140262, 0.00681505696679539, -0.2492942023581188, 0.1456623828884116, -0.24050867814252055, -0.18906862010542108, 0.10594793052510604, 0.13804657808750084, 0.08290881591260825, -0.06704860553145409, 0.18243067077894107, -0.13926062138604098, 0.07295466410486322, 0.12527146629106842, 0.12351118185171417, 0.1059589462146457, 0.048039141380669254, 0.11931805900837246, 0.12301197444627944, 0.09429799752443184, -0.10825627626266061, -0.3136376802515435, -0.18416559408069588, -0.09096077936211307, 0.06344881095470842, -0.12559730438844877, -0.17988293801777458, 0.3830999977408761, 0.09503274539632625, 0.20730602575809157, 0.10879016877152026, 0.21649117057677358, 0.058137596854449886, 0.10654294922163612, 0.03224035016702194, 0.11337606206928429, 0.25720755909692106, 0.08711190102468735, -0.02575976849460092, -0.06701377047207452, 0.2710855744208905] |
711.2058 | Computer Model of a "Sense of Humour". I. General Algorithm | A computer model of a "sense of humour" is proposed. The humorous effect is
interpreted as a specific malfunction in the course of information processing
due to the need for the rapid deletion of the false version transmitted into
consciousness. The biological function of a sense of humour consists in
speeding up the bringing of information into consciousness and in fuller use of
the resources of the brain.
| q-bio.NC cs.AI | a computer model of a sense of humour is proposed the humorous effect is interpreted as a specific malfunction in the course of information processing due to the need for the rapid deletion of the false version transmitted into consciousness the biological function of a sense of humour consists in speeding up the bringing of information into consciousness and in fuller use of the resources of the brain | [['a', 'computer', 'model', 'of', 'a', 'sense', 'of', 'humour', 'is', 'proposed', 'the', 'humorous', 'effect', 'is', 'interpreted', 'as', 'a', 'specific', 'malfunction', 'in', 'the', 'course', 'of', 'information', 'processing', 'due', 'to', 'the', 'need', 'for', 'the', 'rapid', 'deletion', 'of', 'the', 'false', 'version', 'transmitted', 'into', 'consciousness', 'the', 'biological', 'function', 'of', 'a', 'sense', 'of', 'humour', 'consists', 'in', 'speeding', 'up', 'the', 'bringing', 'of', 'information', 'into', 'consciousness', 'and', 'in', 'fuller', 'use', 'of', 'the', 'resources', 'of', 'the', 'brain']] | [-0.09043874898377587, 0.08357794476015602, -0.08371017661000438, 0.03894876351456761, -0.07697153593728538, -0.10163396055919721, 0.06683351110447855, 0.2605999336742303, -0.28772468295167475, -0.29986628049108033, 0.08159798189401901, -0.23112044653252645, -0.19383354057722232, 0.18780222603270566, -0.1506536840187276, 0.041976787478608245, 0.05752068023909541, 0.09925752239959205, 0.005639275987906491, -0.2544146902698284, 0.2766989162328708, 0.07040293075859903, 0.28449446308043075, 0.05727004652897663, 0.11363022079389981, 0.035268495879683864, -0.06409740027190898, -0.025163457003038597, -0.04651159717810943, 0.1693902878665968, 0.2786706035874565, 0.23648501330000513, 0.40861475243068796, -0.4408364462227944, -0.23063091729658053, 0.07808139739491333, 0.13141573643695345, 0.11228756292942255, -0.0320684114635429, -0.30789768921129185, 0.06716359962764032, -0.13876009557177038, -0.06529295882757973, -0.0041758739115560755, 0.04419068090946359, -0.02644682055174866, -0.24161967737874127, 0.08516720917952411, 0.0948199871379663, 0.06881314568112001, -0.04878133850391297, -0.045483952045769376, -0.015603074297199355, 0.19394336191608624, 0.03092339535428704, 0.041607930396875256, 0.1607086793245638, -0.19174841880414853, -0.14981053290916058, 0.39120861963259385, 0.003980515476809267, -0.17000816704924493, 0.1438378080201801, -0.08801329923752586, -0.10955232987180352, 0.13730983006055741, 0.17434215118341587, 0.03063838940579444, -0.16096980390412843, 0.048395195646341614, 0.026860578259562746, 0.17804444803144126, 0.07527170007747105, 0.0518812030855128, 0.21236273376545048, 0.2293729351093883, 0.0025857178843580186, 0.1995474698898547, -0.04295668249730678, -0.09920205401859301, -0.2732086649561739, -0.24799838716931202, -0.17661247499328217, 0.05417037121386623, -0.054141248798687765, -0.16263076428817036, 0.41268830094486475, 0.1420190374690933, 0.1846490507151055, 0.02524981043739792, 0.2794090778402546, 0.058953110715853706, 0.13430964046924868, 0.046744520063785946, 0.17522273989229956, 0.11761380752945758, 0.144046384101624, -0.20376506555989823, 0.14839199380538262, 0.020749150309711695] |
711.2059 | Supersymmetry and Nonequilibrium Work Relations | We give a field-theoretic proof of the nonequilibrium work relations for a
space dependent field with stochastic dynamics. The path integral
representation and its symmetries allow us to derive Jarzynski's equality. In
addition, we derive a set of exact identities that generalize the
fluctuation-dissipation relations to far-from equilibrium situations. These
identities are prone to experimental verification. Furthermore, we show that
supersymmetry invariance of the Langevin equation, which is broken when the
external potential is time-dependent, is partially restored by adding to the
action a term which is precisely Jarzynski's work. Jarzynski's equality can
also be deduced from this supersymmetry
| cond-mat.stat-mech | we give a fieldtheoretic proof of the nonequilibrium work relations for a space dependent field with stochastic dynamics the path integral representation and its symmetries allow us to derive jarzynskis equality in addition we derive a set of exact identities that generalize the fluctuationdissipation relations to farfrom equilibrium situations these identities are prone to experimental verification furthermore we show that supersymmetry invariance of the langevin equation which is broken when the external potential is timedependent is partially restored by adding to the action a term which is precisely jarzynskis work jarzynskis equality can also be deduced from this supersymmetry | [['we', 'give', 'a', 'fieldtheoretic', 'proof', 'of', 'the', 'nonequilibrium', 'work', 'relations', 'for', 'a', 'space', 'dependent', 'field', 'with', 'stochastic', 'dynamics', 'the', 'path', 'integral', 'representation', 'and', 'its', 'symmetries', 'allow', 'us', 'to', 'derive', 'jarzynskis', 'equality', 'in', 'addition', 'we', 'derive', 'a', 'set', 'of', 'exact', 'identities', 'that', 'generalize', 'the', 'fluctuationdissipation', 'relations', 'to', 'farfrom', 'equilibrium', 'situations', 'these', 'identities', 'are', 'prone', 'to', 'experimental', 'verification', 'furthermore', 'we', 'show', 'that', 'supersymmetry', 'invariance', 'of', 'the', 'langevin', 'equation', 'which', 'is', 'broken', 'when', 'the', 'external', 'potential', 'is', 'timedependent', 'is', 'partially', 'restored', 'by', 'adding', 'to', 'the', 'action', 'a', 'term', 'which', 'is', 'precisely', 'jarzynskis', 'work', 'jarzynskis', 'equality', 'can', 'also', 'be', 'deduced', 'from', 'this', 'supersymmetry']] | [-0.11747042765615112, 0.1438270799411141, -0.18556811925343641, 0.12623587021053853, -0.13194579091111217, -0.15647755147926887, 0.04604071815206547, 0.308117163038314, -0.309348387347365, -0.29146154992508166, 0.07963723250819991, -0.23970853269213077, -0.18068934373106016, 0.1495567596602169, -0.06673574904826554, 0.02417956647931156, 0.03549821698342008, 0.008274339108887797, -0.08260401071230364, -0.2380379181392867, 0.31952569041062484, 0.0032532074808547594, 0.24236163026841376, 0.06910442244120393, 0.11485528015423416, 0.02198073485245307, 0.011971776166723834, 0.028825054514031348, -0.16247164596867575, 0.11647436127885047, 0.22248886163920314, 0.08383369347964874, 0.17751164578672762, -0.43972186751738945, -0.20081870261147017, 0.10381641968111084, 0.11660785333816705, 0.17007196974009275, -0.0019471356739299466, -0.3016321930206484, 0.053882657776050495, -0.16712919171109344, -0.17371057138091536, -0.17027062899197895, 0.003516981685110791, -0.010711618181731965, -0.2985953254333575, 0.11240243167596436, 0.09661131998467626, 0.03879386070889957, -0.061331390051613324, -0.018620384480766576, -0.00824588560028886, 0.09816733778617816, 0.061842079039173894, 0.0025053559755436098, 0.1365990077352358, -0.12191151753020933, -0.09573485531063393, 0.36749793713291484, -0.028486733230752775, -0.26144849169397294, 0.1619825285925257, -0.12080489031293175, -0.19616580949249593, 0.06050267064417101, 0.07492658349149155, 0.11643502818928524, -0.24664728162704963, 0.1403968050115215, -0.058757194246146636, 0.12199692289824739, 0.05707411129366268, 0.006015701473436572, 0.1522239117641055, 0.05222481648870415, 0.07123163450659827, 0.19242769727516318, 0.029243618550926748, -0.13489915944184316, -0.38991133181961496, -0.15476536612388575, -0.1521851181551212, 0.11031138187631814, -0.08437080635683908, -0.09748034600187282, 0.3328544263718556, 0.20416440795448543, 0.13133784122482844, 0.1370479850253711, 0.2611835088693734, 0.2180404833782843, 0.037796569447211846, 0.03479157496394232, 0.20605561181413706, 0.16827366528256485, 0.08678512786976014, -0.2376465701164132, 0.0059426523712134425, 0.13011685180280244] |
711.206 | Ca3(Ru1-xCrx)2O7: A new paradigm for spin valves | The spin valve effect is a quantum phenomenon so far only realized in
multilayer thin films or heterostructures. Here we report a strong spin valve
effect existing in bulk single crystals of Ca3(Ru1-xCrx)2O7 having an
anisotropic, bilayered crystal structure. This discovery opens new avenues to
understand the underlying physics of spin valves, and fully realize its
potential in practical devices.
| cond-mat.str-el | the spin valve effect is a quantum phenomenon so far only realized in multilayer thin films or heterostructures here we report a strong spin valve effect existing in bulk single crystals of ca3ru1xcrx2o7 having an anisotropic bilayered crystal structure this discovery opens new avenues to understand the underlying physics of spin valves and fully realize its potential in practical devices | [['the', 'spin', 'valve', 'effect', 'is', 'a', 'quantum', 'phenomenon', 'so', 'far', 'only', 'realized', 'in', 'multilayer', 'thin', 'films', 'or', 'heterostructures', 'here', 'we', 'report', 'a', 'strong', 'spin', 'valve', 'effect', 'existing', 'in', 'bulk', 'single', 'crystals', 'of', 'ca3ru1xcrx2o7', 'having', 'an', 'anisotropic', 'bilayered', 'crystal', 'structure', 'this', 'discovery', 'opens', 'new', 'avenues', 'to', 'understand', 'the', 'underlying', 'physics', 'of', 'spin', 'valves', 'and', 'fully', 'realize', 'its', 'potential', 'in', 'practical', 'devices']] | [-0.20058852894294818, 0.19345546085451595, -0.03909119085992797, -0.05059408527499033, -0.15952742417043042, -0.20378918987619926, 0.04000268032048213, 0.44141528288186604, -0.32299697910577563, -0.26946564714061255, 0.026544569535733406, -0.26217455660008776, -0.1668446871582261, 0.22331635839842512, 0.03935584308327002, 0.057822798803977477, -0.053879442814169294, -0.10487984945618753, -0.10057423382176686, -0.16155616400005707, 0.2434804094797474, 0.018032206376813256, 0.3610442730921747, 0.11238793393407585, 0.10806730264892518, -0.01081959824314562, 0.1536281712992527, 0.002242900210164361, -0.16941346936874976, 0.06219088459797835, 0.2357221353104559, -0.16789890020706896, 0.21762672118878118, -0.5289401575228421, -0.2679687514111905, -0.009488798962053607, 0.12073256492109621, 0.21403202709694535, -0.16716878105870495, -0.26639471768196354, 0.0590427904310873, -0.2010617599964647, -0.1631175788172217, -0.08754202114197157, -0.050005348878754775, -0.12551258522543615, -0.17615727841325293, 0.05778331375065244, 0.11389441946047847, 0.07962409132239172, -0.023545228459100807, -0.10909872788983255, -0.029330769388036707, 0.04255947250067809, -0.028892156087903905, 0.019267136945341854, 0.19136056146126681, -0.18551872017540796, -0.23944932470982105, 0.33640605768472964, 0.010856309195317455, -0.14772405847191802, 0.1585053015595018, -0.1881707485181169, -0.06555060987060858, 0.06161501340694347, 0.17389008223564537, 0.1456960674564717, -0.20496177597077941, 0.08095502133098414, -0.010005617387971635, 0.16753072796736734, 0.0008311027629395662, 0.13604544188385292, 0.3194706639811649, 0.3064687701920837, 0.016111841827820418, 0.16491087512665634, -0.13361062916879685, -0.016259804368019104, -0.1592035139831951, -0.23156112376837282, -0.20372920656987167, 0.13534443825483322, -0.011124166020466472, -0.21718803559572009, 0.4367392924298548, 0.16485437051535157, 0.1072160305329046, -0.13254794078263438, 0.26268596464168215, 0.004606303964125908, 0.1331194753095634, -0.03918708006109474, 0.2939096274391069, 0.16802856701789265, 0.1206796852424366, -0.23767978960048344, 0.1292680808366671, -0.08033555637950361] |
711.2061 | Computer Model of a "Sense of Humour". II. Realization in Neural
Networks | The computer realization of a "sense of humour" requires the creation of an
algorithm for solving the "linguistic problem", i.e. the problem of recognizing
a continuous sequence of polysemantic images. Such algorithm may be realized in
the Hopfield model of a neural network after its proper modification.
| q-bio.NC cs.AI | the computer realization of a sense of humour requires the creation of an algorithm for solving the linguistic problem ie the problem of recognizing a continuous sequence of polysemantic images such algorithm may be realized in the hopfield model of a neural network after its proper modification | [['the', 'computer', 'realization', 'of', 'a', 'sense', 'of', 'humour', 'requires', 'the', 'creation', 'of', 'an', 'algorithm', 'for', 'solving', 'the', 'linguistic', 'problem', 'ie', 'the', 'problem', 'of', 'recognizing', 'a', 'continuous', 'sequence', 'of', 'polysemantic', 'images', 'such', 'algorithm', 'may', 'be', 'realized', 'in', 'the', 'hopfield', 'model', 'of', 'a', 'neural', 'network', 'after', 'its', 'proper', 'modification']] | [-0.11286741729987704, 0.026414798767844964, -0.09474690949908741, 0.009023567661643028, -0.08158442252518042, -0.1355296432486047, 0.03093011720541298, 0.388756548155747, -0.3532180357724428, -0.31474019137575576, 0.08212266842905513, -0.18293164986307206, -0.217891587673322, 0.22098630803900407, -0.10334504246661115, 0.09508994670265922, 0.11322575060488738, 0.10442436490531849, -0.03661862434819341, -0.23139658511575797, 0.28858874468942697, 0.02124628291019927, 0.255737573338632, -0.00012461747974157333, 0.18199574493843576, -0.0017310067930299303, -0.01641664549495782, 0.013155112425169058, -0.005148869645579353, 0.1504042263335103, 0.23413213949812495, 0.22389342060879522, 0.3574251470601429, -0.4231372765751313, -0.2221294200938681, 0.15159396566045674, 0.1196441308433271, 0.16114256360932536, -0.025380610852785732, -0.31606953753077466, 0.08295025719005776, -0.15846478391145152, -0.054259148304877075, -0.017975156225830964, 0.0022366849386700146, -0.04082667410535657, -0.3036209151538534, 0.03047056647989413, 0.13397304457612336, 0.06901357286488233, -0.07147819184667795, -0.037320270081577095, 0.026343321933856478, 0.14564554023799364, -0.0334855029587229, 0.05421576749168984, 0.10236112370520183, -0.24069424034298761, -0.18831412413451093, 0.4281818628230173, -0.012437597423305979, -0.19610337803707176, 0.10620194647218222, 0.023569514377690528, -0.1403332196742944, 0.11313146032878886, 0.16689434870267691, 0.1487274626877321, -0.135256705198275, 0.08702015759342391, -0.08171635914755904, 0.14840013651258271, 0.041380064845409084, 0.013908810412470737, 0.19077358556830365, 0.28405977923261083, 0.048985980046184166, 0.1576472869643982, -0.041691354151977146, -0.07888328227335992, -0.2509834832187904, -0.16099994888772134, -0.23406750899132178, 0.01835142904082718, -0.10880508998651868, -0.22731835524673047, 0.4231236654779185, 0.12606496073599177, 0.20690959112961654, 0.07164658942138372, 0.2527654655277729, 0.10570177326545767, 0.08001443208195269, 0.0469949967480953, 0.13885988199921406, 0.06981421225582776, 0.12467131229198497, -0.22321616499887212, 0.11252631130375211, 0.10863292339854524] |
711.2062 | Autoregressive Time Series Forecasting of Computational Demand | We study the predictive power of autoregressive moving average models when
forecasting demand in two shared computational networks, PlanetLab and Tycoon.
Demand in these networks is very volatile, and predictive techniques to plan
usage in advance can improve the performance obtained drastically.
Our key finding is that a random walk predictor performs best for
one-step-ahead forecasts, whereas ARIMA(1,1,0) and adaptive exponential
smoothing models perform better for two and three-step-ahead forecasts. A Monte
Carlo bootstrap test is proposed to evaluate the continuous prediction
performance of different models with arbitrary confidence and statistical
significance levels. Although the prediction results differ between the Tycoon
and PlanetLab networks, we observe very similar overall statistical properties,
such as volatility dynamics.
| cs.DC | we study the predictive power of autoregressive moving average models when forecasting demand in two shared computational networks planetlab and tycoon demand in these networks is very volatile and predictive techniques to plan usage in advance can improve the performance obtained drastically our key finding is that a random walk predictor performs best for onestepahead forecasts whereas arima110 and adaptive exponential smoothing models perform better for two and threestepahead forecasts a monte carlo bootstrap test is proposed to evaluate the continuous prediction performance of different models with arbitrary confidence and statistical significance levels although the prediction results differ between the tycoon and planetlab networks we observe very similar overall statistical properties such as volatility dynamics | [['we', 'study', 'the', 'predictive', 'power', 'of', 'autoregressive', 'moving', 'average', 'models', 'when', 'forecasting', 'demand', 'in', 'two', 'shared', 'computational', 'networks', 'planetlab', 'and', 'tycoon', 'demand', 'in', 'these', 'networks', 'is', 'very', 'volatile', 'and', 'predictive', 'techniques', 'to', 'plan', 'usage', 'in', 'advance', 'can', 'improve', 'the', 'performance', 'obtained', 'drastically', 'our', 'key', 'finding', 'is', 'that', 'a', 'random', 'walk', 'predictor', 'performs', 'best', 'for', 'onestepahead', 'forecasts', 'whereas', 'arima110', 'and', 'adaptive', 'exponential', 'smoothing', 'models', 'perform', 'better', 'for', 'two', 'and', 'threestepahead', 'forecasts', 'a', 'monte', 'carlo', 'bootstrap', 'test', 'is', 'proposed', 'to', 'evaluate', 'the', 'continuous', 'prediction', 'performance', 'of', 'different', 'models', 'with', 'arbitrary', 'confidence', 'and', 'statistical', 'significance', 'levels', 'although', 'the', 'prediction', 'results', 'differ', 'between', 'the', 'tycoon', 'and', 'planetlab', 'networks', 'we', 'observe', 'very', 'similar', 'overall', 'statistical', 'properties', 'such', 'as', 'volatility', 'dynamics']] | [-0.03844539907274652, 0.03272670262237697, -0.09700791459876747, 0.12562158950130595, -0.016998206364172222, -0.19860164053012838, 0.0773108474633644, 0.4558720810717977, -0.20881322983949058, -0.3485467673600775, 0.1061342768126427, -0.2753426293158426, -0.15881306399896214, 0.22633468214653235, -0.09718503344358992, 0.1328899574886381, 0.11554770097672214, 0.00903114505870416, -0.06743575858191249, -0.3051458980673842, 0.19061211766510278, 0.15492302440601377, 0.3671364878938921, -0.016987727073111893, 0.08415584494071328, -0.044916801925221114, -0.06583756379436999, 0.012748345089829074, -0.0712005450265751, 0.14132182656960413, 0.2776234816407681, 0.14147948047591258, 0.32188259945374675, -0.4142628824255899, -0.2585379959504425, 0.13017336915214175, 0.11753589627786284, 0.046893420761072, 0.001217779052336659, -0.2531752373396823, 0.055061299782411185, -0.2026304278761742, -0.051171091014305045, -0.133947287175178, -0.048484086248595105, 0.06936505859392175, -0.34825548137315604, 0.07825765102294034, 0.014808096028699548, 0.06638811382416644, -0.023307259108014074, -0.14333859068728919, -0.015533909685827331, 0.17153593760516403, 0.05401526433024226, -0.001684869138886575, 0.14449661914841272, -0.14470346724717265, -0.19141942412650162, 0.34344912272573047, -0.09430557321262571, -0.21106716628450142, 0.19406207787713645, -0.10924716138041916, -0.19148780734368923, 0.06014357932917444, 0.25708582770672783, 0.05653710325817223, -0.1439794508347018, -0.01381386504034652, 0.011426619043886926, 0.18054031780962132, 0.003421500943337394, -0.02895583244930722, 0.1529975318621877, 0.2687500245519914, 0.052944332385946695, 0.08592021561936533, -0.12060411667566648, -0.161736716971675, -0.19375469999602146, -0.097778322578993, -0.16948813320327122, -0.004026463395396693, -0.20568692300852956, -0.14447860308486013, 0.4108378738000066, 0.261620323960793, 0.15221454791592814, 0.1762336872814767, 0.337217015865366, 0.08883639054570709, 0.0030054464046142797, 0.12806762522002796, 0.18647733032064662, 0.018396286094000777, 0.0865788281631483, -0.1823858160441082, 0.1509613679264532, 0.012010116465966654] |
711.2063 | A class of residual distribution schemes and their relation to
relaxation systems | Residual distributions (RD) schemes are a class of of high-resolution finite
volume methods for unstructured grids. A key feature of these schemes is that
they make use of genuinely multidimensional (approximate) Riemann solvers as
opposed to the piecemeal 1D Riemann solvers usually employed by finite volume
methods. In 1D, LeVeque and Pelanti [J. Comp. Phys. 172, 572 (2001)] showed
that many of the standard approximate Riemann solver methods (e.g., the Roe
solver, HLL, Lax-Friedrichs) can be obtained from applying an exact Riemann
solver to relaxation systems of the type introduced by Jin and Xin [Comm. Pure
Appl. Math. 48, 235 (1995)]. In this work we extend LeVeque and Pelanti's
results and obtain a multidimensional relaxation system from which
multidimensional approximate Riemann solvers can be obtained. In particular, we
show that with one choice of parameters the relaxation system yields the
standard N-scheme. With another choice, the relaxation system yields a new
Riemann solver, which can be viewed as a genuinely multidimensional extension
of the local Lax-Friedrichs scheme. This new Riemann solver does not require
the use Roe-Struijs-Deconinck averages, nor does it require the inversion of an
m-by-m matrix in each computational grid cell, where $m$ is the number of
conserved variables. Once this new scheme is established, we apply it on a few
standard cases for the 2D compressible Euler equations of gas dynamics. We show
that through the use of linear-preserving limiters, the new approach produces
numerical solutions that are comparable in accuracy to the N-scheme, despite
being computationally less expensive.
| math.NA | residual distributions rd schemes are a class of of highresolution finite volume methods for unstructured grids a key feature of these schemes is that they make use of genuinely multidimensional approximate riemann solvers as opposed to the piecemeal 1d riemann solvers usually employed by finite volume methods in 1d leveque and pelanti j comp phys 172 572 2001 showed that many of the standard approximate riemann solver methods eg the roe solver hll laxfriedrichs can be obtained from applying an exact riemann solver to relaxation systems of the type introduced by jin and xin comm pure appl math 48 235 1995 in this work we extend leveque and pelantis results and obtain a multidimensional relaxation system from which multidimensional approximate riemann solvers can be obtained in particular we show that with one choice of parameters the relaxation system yields the standard nscheme with another choice the relaxation system yields a new riemann solver which can be viewed as a genuinely multidimensional extension of the local laxfriedrichs scheme this new riemann solver does not require the use roestruijsdeconinck averages nor does it require the inversion of an mbym matrix in each computational grid cell where m is the number of conserved variables once this new scheme is established we apply it on a few standard cases for the 2d compressible euler equations of gas dynamics we show that through the use of linearpreserving limiters the new approach produces numerical solutions that are comparable in accuracy to the nscheme despite being computationally less expensive | [['residual', 'distributions', 'rd', 'schemes', 'are', 'a', 'class', 'of', 'of', 'highresolution', 'finite', 'volume', 'methods', 'for', 'unstructured', 'grids', 'a', 'key', 'feature', 'of', 'these', 'schemes', 'is', 'that', 'they', 'make', 'use', 'of', 'genuinely', 'multidimensional', 'approximate', 'riemann', 'solvers', 'as', 'opposed', 'to', 'the', 'piecemeal', '1d', 'riemann', 'solvers', 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0.13761595771610435, 0.11228937066851123, -0.20521601776201878, 0.011139821373827515, 0.1640384712729663] |
711.2064 | Possible evidence for an inverted temperature-density relation in the
intergalactic medium from the flux distribution of the Lyman-alpha forest | We compare the improved measurement of the Lya forest flux probability
distribution at 1.7<z<3.2 presented by Kim et al. (2007) to a large set of
hydrodynamical simulations of the Lya forest with different cosmological
parameters and thermal histories. The simulations are in good agreement with
the observational data if the temperature-density relation for the low density
intergalactic medium (IGM), T=T_0 Delta^{gamma-1}, is either close to
isothermal or inverted (gamma<1). Our results suggest that the voids in the IGM
may be significantly hotter and the thermal state of the low density IGM may be
substantially more complex than is usually assumed at these redshifts. We
discuss radiative transfer effects which alter the spectral shape of ionising
radiation during the epoch of HeII reionisation as a possible physical
mechanism for achieving an inverted temperature-density relation at z~3.
| astro-ph | we compare the improved measurement of the lya forest flux probability distribution at 17z32 presented by kim et al 2007 to a large set of hydrodynamical simulations of the lya forest with different cosmological parameters and thermal histories the simulations are in good agreement with the observational data if the temperaturedensity relation for the low density intergalactic medium igm tt_0 deltagamma1 is either close to isothermal or inverted gamma1 our results suggest that the voids in the igm may be significantly hotter and the thermal state of the low density igm may be substantially more complex than is usually assumed at these redshifts we discuss radiative transfer effects which alter the spectral shape of ionising radiation during the epoch of heii reionisation as a possible physical mechanism for achieving an inverted temperaturedensity relation at z3 | [['we', 'compare', 'the', 'improved', 'measurement', 'of', 'the', 'lya', 'forest', 'flux', 'probability', 'distribution', 'at', '17z32', 'presented', 'by', 'kim', 'et', 'al', '2007', 'to', 'a', 'large', 'set', 'of', 'hydrodynamical', 'simulations', 'of', 'the', 'lya', 'forest', 'with', 'different', 'cosmological', 'parameters', 'and', 'thermal', 'histories', 'the', 'simulations', 'are', 'in', 'good', 'agreement', 'with', 'the', 'observational', 'data', 'if', 'the', 'temperaturedensity', 'relation', 'for', 'the', 'low', 'density', 'intergalactic', 'medium', 'igm', 'tt_0', 'deltagamma1', 'is', 'either', 'close', 'to', 'isothermal', 'or', 'inverted', 'gamma1', 'our', 'results', 'suggest', 'that', 'the', 'voids', 'in', 'the', 'igm', 'may', 'be', 'significantly', 'hotter', 'and', 'the', 'thermal', 'state', 'of', 'the', 'low', 'density', 'igm', 'may', 'be', 'substantially', 'more', 'complex', 'than', 'is', 'usually', 'assumed', 'at', 'these', 'redshifts', 'we', 'discuss', 'radiative', 'transfer', 'effects', 'which', 'alter', 'the', 'spectral', 'shape', 'of', 'ionising', 'radiation', 'during', 'the', 'epoch', 'of', 'heii', 'reionisation', 'as', 'a', 'possible', 'physical', 'mechanism', 'for', 'achieving', 'an', 'inverted', 'temperaturedensity', 'relation', 'at', 'z3']] | [-0.0199056523200472, 0.1822862884546882, -0.0523714891864237, 0.09201621446487453, -0.07691166541928342, -0.07580851812138041, 0.045173310838055925, 0.4195479152362738, -0.17359412592812268, -0.3440203434099624, 0.021069713119320127, -0.2896761409556076, -0.010496811525993494, 0.18515680555024866, 0.028230654614379826, 0.0037346525228957633, 0.02442024535857447, -0.10080701909931515, -0.03275496607738436, -0.2715106152915465, 0.31525400819243, 0.18797159545929798, 0.2410406300336741, 0.014856710413178957, 0.051745718446692256, -0.10642225301560404, -0.09413105636529291, 0.016511660326383452, -0.1839345423807151, -0.03549001463549906, 0.2288307625550165, 0.10924058906567186, 0.19967594258695728, -0.3936315544176353, -0.2780913906310921, 0.1142506121463184, 0.17657763809452195, 0.11686891057691884, -0.04351727118067975, -0.2401267079942262, 0.04979345888905436, -0.15715734427099798, -0.12687969927801124, 0.04626501011731687, -0.0054969127852914496, -0.0135266098346728, -0.2685585436828212, 0.16668846205210508, -0.018675514470799758, 0.013029945777979359, -0.04203637271820665, -0.10061804958229968, -0.09955158512066327, 0.06032966511365749, -0.04348736796215343, 0.04004683712003892, 0.20181461709417722, -0.18946646347141533, 0.008683621799990313, 0.396810080327872, -0.07690458146235367, -0.04006068761557786, 0.20617194787891052, -0.19977859592190317, -0.14019456251051776, 0.16810167520745734, 0.13770062228623056, 0.03416156903979605, -0.08671031877530544, 0.018877175646580393, -0.02834933788911787, 0.20156547373487377, 0.033997859937875574, -0.012569617897538389, 0.27390210085840366, 0.08824577167240986, 0.004815319181183603, 0.059429905280026035, -0.09292095248872387, -0.013591006015072953, -0.24106711220107416, -0.11713541227865464, -0.14924601238540638, 0.11032936132144627, -0.19626411228460683, -0.14970819720539696, 0.33085084428538136, 0.20697730785729224, 0.2500081194752355, 0.0895776639617771, 0.34140696337641174, 0.14420639215753528, -0.015969223718145, 0.12105666223649325, 0.2922170958273224, 0.16188368976373338, 0.1075775760483108, -0.25996599020436406, 0.10562242531398339, 0.0005268837015123676] |
711.2065 | On the Origin and Survival of UHE Cosmic-Ray Nuclei in GRBs and
Hypernovae | The chemical composition of the ultra-high-energy (UHE) cosmic rays serves as
an important clue for their origin. Recent measurements of the elongation rates
by the Pierre Auger Observatory hint at the possible presence of heavy or
intermediate mass nuclei in the UHE cosmic rays. Gamma-ray bursts (GRBs) and
hypernovae have been suggested as possible sources of the UHE cosmic rays. Here
we derive the constraints on the physical conditions under which UHE heavy
nuclei, if they are accelerated in these sources, can survive in their intense
photon fields. We find that in the GRB external shock and in the hypernova
scenarios, UHE nuclei can easily survive photo-disintegration. In the GRB
internal shock scenario, UHE nuclei can also survive, provided the dissipation
radius and/or the bulk Lorentz factor of the relativistic outflow are
relatively large, or if the low-energy self-absorption break in the photon
spectrum of the prompt emission occurs above several KeV. In internal shocks
and in the other scenarios, intermediate-mass UHE nuclei have a higher
probability of survival against photo-disintegration than UHE heavy nuclei such
as Fe.
| astro-ph hep-ph | the chemical composition of the ultrahighenergy uhe cosmic rays serves as an important clue for their origin recent measurements of the elongation rates by the pierre auger observatory hint at the possible presence of heavy or intermediate mass nuclei in the uhe cosmic rays gammaray bursts grbs and hypernovae have been suggested as possible sources of the uhe cosmic rays here we derive the constraints on the physical conditions under which uhe heavy nuclei if they are accelerated in these sources can survive in their intense photon fields we find that in the grb external shock and in the hypernova scenarios uhe nuclei can easily survive photodisintegration in the grb internal shock scenario uhe nuclei can also survive provided the dissipation radius andor the bulk lorentz factor of the relativistic outflow are relatively large or if the lowenergy selfabsorption break in the photon spectrum of the prompt emission occurs above several kev in internal shocks and in the other scenarios intermediatemass uhe nuclei have a higher probability of survival against photodisintegration than uhe heavy nuclei such as fe | [['the', 'chemical', 'composition', 'of', 'the', 'ultrahighenergy', 'uhe', 'cosmic', 'rays', 'serves', 'as', 'an', 'important', 'clue', 'for', 'their', 'origin', 'recent', 'measurements', 'of', 'the', 'elongation', 'rates', 'by', 'the', 'pierre', 'auger', 'observatory', 'hint', 'at', 'the', 'possible', 'presence', 'of', 'heavy', 'or', 'intermediate', 'mass', 'nuclei', 'in', 'the', 'uhe', 'cosmic', 'rays', 'gammaray', 'bursts', 'grbs', 'and', 'hypernovae', 'have', 'been', 'suggested', 'as', 'possible', 'sources', 'of', 'the', 'uhe', 'cosmic', 'rays', 'here', 'we', 'derive', 'the', 'constraints', 'on', 'the', 'physical', 'conditions', 'under', 'which', 'uhe', 'heavy', 'nuclei', 'if', 'they', 'are', 'accelerated', 'in', 'these', 'sources', 'can', 'survive', 'in', 'their', 'intense', 'photon', 'fields', 'we', 'find', 'that', 'in', 'the', 'grb', 'external', 'shock', 'and', 'in', 'the', 'hypernova', 'scenarios', 'uhe', 'nuclei', 'can', 'easily', 'survive', 'photodisintegration', 'in', 'the', 'grb', 'internal', 'shock', 'scenario', 'uhe', 'nuclei', 'can', 'also', 'survive', 'provided', 'the', 'dissipation', 'radius', 'andor', 'the', 'bulk', 'lorentz', 'factor', 'of', 'the', 'relativistic', 'outflow', 'are', 'relatively', 'large', 'or', 'if', 'the', 'lowenergy', 'selfabsorption', 'break', 'in', 'the', 'photon', 'spectrum', 'of', 'the', 'prompt', 'emission', 'occurs', 'above', 'several', 'kev', 'in', 'internal', 'shocks', 'and', 'in', 'the', 'other', 'scenarios', 'intermediatemass', 'uhe', 'nuclei', 'have', 'a', 'higher', 'probability', 'of', 'survival', 'against', 'photodisintegration', 'than', 'uhe', 'heavy', 'nuclei', 'such', 'as', 'fe']] | [-0.07486540069175737, 0.29416449322292304, -0.039035098446700514, 0.25759266332587166, -0.040087935084403815, -0.040829518744512724, 0.02108127834128865, 0.44268451402947473, -0.20308093232066068, -0.326960807033583, -0.047456732732008386, -0.3311552619545203, 0.06931418123304467, 0.20760709256995888, 0.06816196668987277, -0.04753857375426072, 0.0346078765578568, -0.050054302947920105, 0.012382134502188544, -0.21143007565033362, 0.28198751683341694, 0.24321957722076037, 0.19273901238005473, 0.10134056479286853, 0.0708492045602081, -0.08676370406350686, -0.01353428893450522, -0.12029626326873542, -0.0741876600759599, 0.023823157419827296, 0.21654135075638467, 0.14979685011569652, 0.13388903715302436, -0.48060138263671626, -0.28292687662996174, 0.1771502223211142, 0.20047289846737062, 0.05935244035077794, -0.10837724588071049, -0.31243807341238966, 0.02977489603139209, -0.22535779227220107, -0.20519209457718338, 0.056710498104018445, -0.028207187982945796, 0.09704847547769797, -0.1859605137959876, 0.08660140364372637, 0.004669402314616849, -0.005047132890263384, -0.11399265227962306, -0.09165215159745448, -0.010420583311489292, 0.05199563291363334, 0.1947533218922575, -0.007104307437953906, 0.22903597449067603, -0.1470804943420579, -0.1055999195551123, 0.4507885669316217, -0.025207205700803825, -0.00761485285272173, 0.21536760374097927, -0.2205307316375122, -0.22265853606729527, 0.23062351008803908, 0.1829048252476149, 0.09934636299613486, -0.15871877324756947, 0.05510156773707013, 0.007922698426442325, 0.09738638022851744, 0.0712080596216295, 0.08778454541762391, 0.2851843945852094, 0.1398336885109795, 0.0492766953355978, 0.012052611249376068, -0.21997059101900715, 0.08592406630168115, -0.33367868106330884, -0.10619778064435369, -0.1321630756150973, 0.15469812352885232, -0.11706695081693907, -0.10239997896394598, 0.336383208064781, 0.08195113477014591, 0.15386255340797178, -0.0586242358863427, 0.28771304536945697, 0.04283412544872989, 0.006145179823689749, 0.12025139975267347, 0.3849961566267891, 0.11910800568058333, 0.08008183177633818, -0.22253728411395857, 0.1279822121932841, 0.034852214628474765] |
711.2066 | The X-ray Properties of Moderate-redshift Galaxy Groups Selected by
Association with Gravitational Lenses | We present results from a systematic investigation of the X-ray properties of
a sample of moderate redshift (0.3<z<0.6) galaxy groups. These groups were
selected not by traditional X-ray or optical search methods, but rather by an
association, either physical or along the line of sight, with a strong
gravitational lens. We calculate the properties of seven galaxy groups in the
fields of six lens systems. Diffuse X-ray emission from the intragroup medium
is detected in four of the groups. All of the detected groups have X-ray
luminosities greater than 10^{42} h^{-2} erg/s, and lie on the L_X-sigma_v
relations defined by local groups and clusters. The upper limits for the
non-detections are also consistent with the local L_X-sigma_v relationships.
Although the sample size is small and deeper optical and X-ray data are needed,
these results suggest that lens-selected groups are similar to X-ray selected
samples and, thus, are more massive than the typical poor-group environments of
local galaxies.
| astro-ph | we present results from a systematic investigation of the xray properties of a sample of moderate redshift 03z06 galaxy groups these groups were selected not by traditional xray or optical search methods but rather by an association either physical or along the line of sight with a strong gravitational lens we calculate the properties of seven galaxy groups in the fields of six lens systems diffuse xray emission from the intragroup medium is detected in four of the groups all of the detected groups have xray luminosities greater than 1042 h2 ergs and lie on the l_xsigma_v relations defined by local groups and clusters the upper limits for the nondetections are also consistent with the local l_xsigma_v relationships although the sample size is small and deeper optical and xray data are needed these results suggest that lensselected groups are similar to xray selected samples and thus are more massive than the typical poorgroup environments of local galaxies | [['we', 'present', 'results', 'from', 'a', 'systematic', 'investigation', 'of', 'the', 'xray', 'properties', 'of', 'a', 'sample', 'of', 'moderate', 'redshift', '03z06', 'galaxy', 'groups', 'these', 'groups', 'were', 'selected', 'not', 'by', 'traditional', 'xray', 'or', 'optical', 'search', 'methods', 'but', 'rather', 'by', 'an', 'association', 'either', 'physical', 'or', 'along', 'the', 'line', 'of', 'sight', 'with', 'a', 'strong', 'gravitational', 'lens', 'we', 'calculate', 'the', 'properties', 'of', 'seven', 'galaxy', 'groups', 'in', 'the', 'fields', 'of', 'six', 'lens', 'systems', 'diffuse', 'xray', 'emission', 'from', 'the', 'intragroup', 'medium', 'is', 'detected', 'in', 'four', 'of', 'the', 'groups', 'all', 'of', 'the', 'detected', 'groups', 'have', 'xray', 'luminosities', 'greater', 'than', '1042', 'h2', 'ergs', 'and', 'lie', 'on', 'the', 'l_xsigma_v', 'relations', 'defined', 'by', 'local', 'groups', 'and', 'clusters', 'the', 'upper', 'limits', 'for', 'the', 'nondetections', 'are', 'also', 'consistent', 'with', 'the', 'local', 'l_xsigma_v', 'relationships', 'although', 'the', 'sample', 'size', 'is', 'small', 'and', 'deeper', 'optical', 'and', 'xray', 'data', 'are', 'needed', 'these', 'results', 'suggest', 'that', 'lensselected', 'groups', 'are', 'similar', 'to', 'xray', 'selected', 'samples', 'and', 'thus', 'are', 'more', 'massive', 'than', 'the', 'typical', 'poorgroup', 'environments', 'of', 'local', 'galaxies']] | [-0.08683291961544103, 0.09828504966656422, -0.05400369221104249, 0.11858613263785599, -0.09506324261817481, -0.0463906949136271, 0.08188567101324518, 0.491345889199405, -0.15262897948944762, -0.35987553094183244, 0.10446018712865489, -0.33502786769982307, -0.03777492014435871, 0.25196267754109875, 0.02501806314854372, -0.03734204575058914, 0.00535766327933919, -0.044900615046161316, -0.07556470233952671, -0.289114318792558, 0.33571257466720716, 0.028027594299806703, 0.2200170879883151, -0.05673175079207266, 0.03591583720333273, -0.04109820492805973, -0.12429851216654624, 0.033367824302084986, -0.09269062553615978, 0.11464891524031579, 0.2292858519531306, 0.08578875282058313, 0.2154457290807078, -0.37506564267293263, -0.21868043378476174, 0.08724627531013421, 0.16697419820083004, 0.02389558487301392, -0.0587229846568305, -0.2864172926067465, 0.08623015292161595, -0.1420099463719394, -0.12544593064174536, 0.041580608655368126, 0.01663145086758079, 0.08311153228484815, -0.15498355730106272, 0.13420758950204828, 0.007014336626255705, 0.1033200463323268, -0.13845184846450725, -0.09694778209311827, -0.04130543084184249, 0.10208679879264486, 0.005150646734381876, 0.0072458346479482225, 0.1921995089629725, -0.15146956151171076, -0.0813494473966139, 0.42448897359351956, 0.0033493756787896516, -0.02604388689712411, 0.2665608290943407, -0.213757120527988, -0.20283901929074238, 0.18230772233237663, 0.14629083624590308, 0.11428259600915255, -0.1731379013425941, 0.002442620228600478, -0.059147632754437865, 0.21092318979001815, 0.009855501899766105, 0.09450710575235256, 0.24993374813348054, 0.07526536414544323, 0.04548988772195674, 0.10982821962285426, -0.16205013149057426, 0.0521897655836637, -0.24533637979578587, -0.0969272586021332, -0.10816498109845504, 0.07580635366940705, -0.1429993901442128, -0.11146425572524388, 0.31587479375603217, 0.09311301163848369, 0.20056277960538865, 0.0784095749304059, 0.27950678909828347, 0.07979786885196283, 0.12799338018822093, 0.08183650773829751, 0.2946267162044082, 0.16117774835156817, -0.006407586367981088, -0.17315336654803926, 0.04036767043233398, 0.012199156973022787] |
711.2067 | Effect of Coulomb interaction on current noise in open quantum dots | We analyze the effect of Coulomb interaction on the noise of electric current
through an open quantum dot. We demonstrate that the ensemble average value of
the noise power acquires an interaction correction even for a dot coupled to
the leads by reflectionless point contacts, when the ensemble average
conductance is known to have no interaction corrections. To leading order, the
correction to the noise originates from the formation of a nonequilibrium state
of the Coulomb field describing the interaction between electrons. We find the
dependence of the current noise power on the electron temperature, the applied
voltage bias, and the strength of the Coulomb interaction.
| cond-mat.mes-hall | we analyze the effect of coulomb interaction on the noise of electric current through an open quantum dot we demonstrate that the ensemble average value of the noise power acquires an interaction correction even for a dot coupled to the leads by reflectionless point contacts when the ensemble average conductance is known to have no interaction corrections to leading order the correction to the noise originates from the formation of a nonequilibrium state of the coulomb field describing the interaction between electrons we find the dependence of the current noise power on the electron temperature the applied voltage bias and the strength of the coulomb interaction | [['we', 'analyze', 'the', 'effect', 'of', 'coulomb', 'interaction', 'on', 'the', 'noise', 'of', 'electric', 'current', 'through', 'an', 'open', 'quantum', 'dot', 'we', 'demonstrate', 'that', 'the', 'ensemble', 'average', 'value', 'of', 'the', 'noise', 'power', 'acquires', 'an', 'interaction', 'correction', 'even', 'for', 'a', 'dot', 'coupled', 'to', 'the', 'leads', 'by', 'reflectionless', 'point', 'contacts', 'when', 'the', 'ensemble', 'average', 'conductance', 'is', 'known', 'to', 'have', 'no', 'interaction', 'corrections', 'to', 'leading', 'order', 'the', 'correction', 'to', 'the', 'noise', 'originates', 'from', 'the', 'formation', 'of', 'a', 'nonequilibrium', 'state', 'of', 'the', 'coulomb', 'field', 'describing', 'the', 'interaction', 'between', 'electrons', 'we', 'find', 'the', 'dependence', 'of', 'the', 'current', 'noise', 'power', 'on', 'the', 'electron', 'temperature', 'the', 'applied', 'voltage', 'bias', 'and', 'the', 'strength', 'of', 'the', 'coulomb', 'interaction']] | [-0.17067002189644384, 0.1276971106442188, -0.05458196299150586, 0.05631342244374056, 0.02955772762872138, -0.12315251690528865, 0.04880426926340662, 0.3393453984205031, -0.26578507857959505, -0.32205132224579464, -0.0147444051031445, -0.33196867645700584, -0.10939331667251745, 0.1659342793941076, 0.011239724831198747, -0.024770711263079406, 0.01219987282353752, 0.07269963531157458, -0.0596064007050305, -0.19708291787373008, 0.35744709514063905, 0.07901029243410723, 0.2908108874909439, 0.1222662377821387, 0.08715371586347245, 0.031368741471285246, 0.055081033859542515, 0.04160626388796306, -0.07512499963380627, 0.03589779891530579, 0.1452270731585812, -0.06129887789698704, 0.2551769144692511, -0.4363708279078018, -0.171810194858754, 0.07247357755429375, 0.11354708172741153, 0.16956406590124629, -0.07863030616273084, -0.2776921253018784, -0.023605051648117742, -0.17528712190028703, -0.09448963677277789, -0.034516305254139706, 0.020682532626933436, 0.043810579433756054, -0.3279458321543094, 0.11601370489576233, 0.05430117513290343, -0.00011910447320364908, -0.03259516323758465, -0.08581118035253207, -0.007461482210893114, 0.15649304116410553, 0.03510419888430679, 0.03323103048408158, 0.21952780069484604, -0.20646249267870104, -0.08216352909276227, 0.3313496232489651, -0.09404696796620968, -0.15222609707347626, 0.1427604652642501, -0.15489276669884347, -0.004313289780907755, 0.15486780780736567, 0.13803121794612622, 0.028186918125940347, -0.15758833614958315, 0.1087240944281528, 0.07033153925583048, 0.19004810484426035, 0.01915073414104727, 0.03632337299399605, 0.21776030027254853, 0.15122167214988466, 0.06655224323281492, 0.16606757801272115, -0.17543900575717244, -0.11596448270533725, -0.28008036586930446, -0.1008559562530004, -0.1924483160716745, 0.12951146310002035, -0.08610894253797596, -0.20021916300778822, 0.43714899753570724, 0.2337264982842893, 0.17899003122133678, -0.008397710606244937, 0.30283120896596954, 0.21829367619236265, 0.05863640219289458, 0.03258510693503579, 0.3025772051692431, 0.17870634710987293, 0.06778469883379931, -0.3686911051956726, 0.028714787641118438, -0.014419982332806542] |
711.2068 | Type Ia Supernovae are Good Standard Candles in the Near Infrared:
Evidence from PAIRITEL | We have obtained 1087 NIR (JHKs) measurements of 21 SNe Ia using PAIRITEL,
nearly doubling the number of well-sampled NIR SN Ia light curves. These data
strengthen the evidence that SNe Ia are excellent standard candles in the NIR,
even without correction for optical light-curve shape. We construct fiducial
NIR templates for normal SNe Ia from our sample, excluding only the three known
peculiar SNe Ia: SN 2005bl, SN 2005hk, and SN 2005ke. The H-band absolute
magnitudes in this sample of 18 SNe Ia have an intrinsic rms of only 0.15 mag
with no correction for light-curve shape. We found a relationship between the
H-band extinction and optical color excess of AH=0.2E(B-V). This variation is
as small as the scatter in distance modulus measurements currently used for
cosmology based on optical light curves after corrections for light-curve
shape. Combining the homogeneous PAIRITEL measurements with 23 SNe Ia from the
literature, these 41 SNe Ia have standard H-band magnitudes with an rms scatter
of 0.16 mag. The good match of our sample with the literature sample suggests
there are few systematic problems with the photometry. We present a nearby NIR
Hubble diagram that shows no correlation of the residuals from the Hubble line
with light-curve properties. Future samples that account for optical and NIR
light-curve shapes, absorption, spectroscopic variation, or host-galaxy
properties may reveal effective ways to improve the use of SNe Ia as distance
indicators. Since systematic errors due to dust absorption in optical bands
remain the leading difficulty in the cosmological use of supernovae, the good
behavior of SN Ia NIR light curves and their relative insensitivity to
reddening make these objects attractive candidates for future cosmological
work.
| astro-ph | we have obtained 1087 nir jhks measurements of 21 sne ia using pairitel nearly doubling the number of wellsampled nir sn ia light curves these data strengthen the evidence that sne ia are excellent standard candles in the nir even without correction for optical lightcurve shape we construct fiducial nir templates for normal sne ia from our sample excluding only the three known peculiar sne ia sn 2005bl sn 2005hk and sn 2005ke the hband absolute magnitudes in this sample of 18 sne ia have an intrinsic rms of only 015 mag with no correction for lightcurve shape we found a relationship between the hband extinction and optical color excess of ah02ebv this variation is as small as the scatter in distance modulus measurements currently used for cosmology based on optical light curves after corrections for lightcurve shape combining the homogeneous pairitel measurements with 23 sne ia from the literature these 41 sne ia have standard hband magnitudes with an rms scatter of 016 mag the good match of our sample with the literature sample suggests there are few systematic problems with the photometry we present a nearby nir hubble diagram that shows no correlation of the residuals from the hubble line with lightcurve properties future samples that account for optical and nir lightcurve shapes absorption spectroscopic variation or hostgalaxy properties may reveal effective ways to improve the use of sne ia as distance indicators since systematic errors due to dust absorption in optical bands remain the leading difficulty in the cosmological use of supernovae the good behavior of sn ia nir light curves and their relative insensitivity to reddening make these objects attractive candidates for future cosmological work | [['we', 'have', 'obtained', '1087', 'nir', 'jhks', 'measurements', 'of', '21', 'sne', 'ia', 'using', 'pairitel', 'nearly', 'doubling', 'the', 'number', 'of', 'wellsampled', 'nir', 'sn', 'ia', 'light', 'curves', 'these', 'data', 'strengthen', 'the', 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711.2069 | New constructions of Yang-Baxter systems | The quantum Yang-Baxter equation admits generalisations to systems of
Yang-Baxter type equations called Yang-Baxter systems. Starting from algebra
structures, we propose new constructions of some constant as well as the
spectral-parameter dependent Yang-Baxter systems. Besides, we also present
explicitly the commutation algebra structure associated to the constant type in
dimension two.
| math.QA math.RA | the quantum yangbaxter equation admits generalisations to systems of yangbaxter type equations called yangbaxter systems starting from algebra structures we propose new constructions of some constant as well as the spectralparameter dependent yangbaxter systems besides we also present explicitly the commutation algebra structure associated to the constant type in dimension two | [['the', 'quantum', 'yangbaxter', 'equation', 'admits', 'generalisations', 'to', 'systems', 'of', 'yangbaxter', 'type', 'equations', 'called', 'yangbaxter', 'systems', 'starting', 'from', 'algebra', 'structures', 'we', 'propose', 'new', 'constructions', 'of', 'some', 'constant', 'as', 'well', 'as', 'the', 'spectralparameter', 'dependent', 'yangbaxter', 'systems', 'besides', 'we', 'also', 'present', 'explicitly', 'the', 'commutation', 'algebra', 'structure', 'associated', 'to', 'the', 'constant', 'type', 'in', 'dimension', 'two']] | [-0.17799831408203817, 0.04406756993529259, -0.020142554570281624, 0.0684191641379513, -0.1981915759160092, -0.23456162594112695, -0.05761727996115737, 0.28421470773059365, -0.41917699385507434, -0.1957446735936637, 0.11874065692216962, -0.2746757149111991, -0.23433811860341652, 0.20436753832972518, -0.0794380907626713, 0.0477125061420249, 0.036084657644524294, 0.07767668566392626, -0.21208484459887533, -0.19528489238034716, 0.45041057759640263, -0.00046499301085942515, 0.22983663479852326, -0.08104626018115703, 0.18605074761252777, -0.04990576564416509, 0.061327293697817656, -0.030197079905180956, -0.21730420948462745, 0.08227971066063379, 0.21969988458223788, 0.06450596833875512, 0.11881232693079202, -0.38270180425880584, -0.17039639020667358, 0.09090892011847566, 0.19865664873527838, 0.15523880884489594, -0.04000242503688616, -0.28828926472102895, 0.00030383376368120604, -0.21833985430352829, -0.2016701960169217, -0.11602565607822993, 0.049089724544947054, -0.002214275300502777, -0.142263470086333, 0.10239528684235434, 0.07714041775119874, 0.014600938332139277, -0.14167629547563254, -0.12742104804070264, -0.029937431348633824, 0.03397878309296371, -0.11186659504549906, -0.04484651459600119, 0.057443990070811086, -0.14065687387597328, -0.20474854725362807, 0.3872459826205729, -0.03353387584873274, -0.2901028739836286, 0.14181702576723754, -0.06429483177249923, -0.2536021789042827, 0.03355992862991258, 0.08644446396433256, 0.0668354906945252, -0.14955726322631224, 0.20531434661653988, -0.061366983871980044, 0.10154489163930218, 0.07772938123739817, 0.0843879607159133, 0.13922859661682857, 0.05429700217848899, 0.008792239789138822, 0.16623304168894595, 0.09951005402071328, -0.16678009521873557, -0.37990450274710563, -0.14419947873216635, -0.056914855132573376, 0.19291770171520173, -0.09915271059007329, -0.22171955699941107, 0.33029704814886346, 0.1565219291723242, 0.14609929589741846, 0.06653743125406988, 0.15481426099351808, 0.13750269888060204, 0.09983705792247373, 0.048954843379118866, 0.11490682902684271, 0.26788658453334196, 0.09944958286359906, -0.2056686097126016, -0.054391945456611177, 0.26058977457932103] |
711.207 | The insulating phases and superfluid-insulator transition of disordered
boson chains | Using a strong disorder real-space renormalization group (RG), we study the
phase diagram of a fully disordered chain of interacting bosons. Since this
approach does not suffer from run-away flows, it allows a direct study of the
insulating phases, which are not accessible in a weak disorder perturbative
treatment. We find that the universal properties of the insulating phase are
determined by the details and symmetries of the onsite chemical-potential
disorder. Three insulating phases are possible: (i) an incompressible Mott
glass with a finite superfluid susceptibility, (ii) a random-singlet glass with
diverging compressibility and superfluid susceptibility, (iii) a Bose glass
with a finite compressibility but diverging superfluid susceptibility. In
addition to characterizing the insulating phases, we show that the
superfluid-insulator transition is always of the Kosterlitz-Thouless
universality class.
| cond-mat.dis-nn cond-mat.supr-con | using a strong disorder realspace renormalization group rg we study the phase diagram of a fully disordered chain of interacting bosons since this approach does not suffer from runaway flows it allows a direct study of the insulating phases which are not accessible in a weak disorder perturbative treatment we find that the universal properties of the insulating phase are determined by the details and symmetries of the onsite chemicalpotential disorder three insulating phases are possible i an incompressible mott glass with a finite superfluid susceptibility ii a randomsinglet glass with diverging compressibility and superfluid susceptibility iii a bose glass with a finite compressibility but diverging superfluid susceptibility in addition to characterizing the insulating phases we show that the superfluidinsulator transition is always of the kosterlitzthouless universality class | [['using', 'a', 'strong', 'disorder', 'realspace', 'renormalization', 'group', 'rg', 'we', 'study', 'the', 'phase', 'diagram', 'of', 'a', 'fully', 'disordered', 'chain', 'of', 'interacting', 'bosons', 'since', 'this', 'approach', 'does', 'not', 'suffer', 'from', 'runaway', 'flows', 'it', 'allows', 'a', 'direct', 'study', 'of', 'the', 'insulating', 'phases', 'which', 'are', 'not', 'accessible', 'in', 'a', 'weak', 'disorder', 'perturbative', 'treatment', 'we', 'find', 'that', 'the', 'universal', 'properties', 'of', 'the', 'insulating', 'phase', 'are', 'determined', 'by', 'the', 'details', 'and', 'symmetries', 'of', 'the', 'onsite', 'chemicalpotential', 'disorder', 'three', 'insulating', 'phases', 'are', 'possible', 'i', 'an', 'incompressible', 'mott', 'glass', 'with', 'a', 'finite', 'superfluid', 'susceptibility', 'ii', 'a', 'randomsinglet', 'glass', 'with', 'diverging', 'compressibility', 'and', 'superfluid', 'susceptibility', 'iii', 'a', 'bose', 'glass', 'with', 'a', 'finite', 'compressibility', 'but', 'diverging', 'superfluid', 'susceptibility', 'in', 'addition', 'to', 'characterizing', 'the', 'insulating', 'phases', 'we', 'show', 'that', 'the', 'superfluidinsulator', 'transition', 'is', 'always', 'of', 'the', 'kosterlitzthouless', 'universality', 'class']] | [-0.19331522038373805, 0.3059369913145247, -0.12204441234916885, 0.010102025757078081, -0.03687033132882789, -0.2083720811947387, 0.09603576152585447, 0.3498408441519132, -0.2143304598830582, -0.17192834703746485, 0.05752477594796801, -0.3276282772004606, -0.14278533647666336, 0.06258824357428239, 0.062169666300178505, 0.02751886209807708, -0.04881206115169334, -0.0320884474349441, -0.1985138400455071, -0.2154978801463585, 0.3256784755685658, -0.08185217275968171, 0.33166552806505933, 0.10887581553470227, 0.014115152109297924, -0.020838603822994628, 0.10011626269988483, 0.09492398665315704, -0.19405057397000292, -0.04761573703945032, 0.2594573789592687, -0.09820634374773363, 0.18480775770149194, -0.38579575474432204, -0.24067629063210916, 0.08497747307410464, 0.16470507325357175, 0.17818983279994427, -0.05493886857129837, -0.32264909263903974, -0.0020995391096221283, -0.229817962597906, -0.14854437904796214, -0.14318988695231383, -0.02566610289750315, 0.0059872164035468245, -0.2353996962265228, 0.16455988838060875, 0.07432925862667616, 0.11372106447197439, -0.05624988577847034, -0.0347103997519298, -0.049588513993512606, 0.0992752353195101, 0.04002225835392892, 0.026986115222371154, 0.14102210698183626, -0.18739292411737551, -0.052815550218838325, 0.3902385659966967, -0.03331681850977475, -0.07398588548562657, 0.23057042346772505, -0.1927084385991975, -0.09559319344771211, 0.21554585103035606, 0.06394457998067082, 0.06447948476488818, -0.11868410703755217, 0.06536579366274964, -0.03793281865910103, 0.19190005522978026, -0.08369744558513048, 0.028432997838535812, 0.24762185200233944, 0.18721779837142094, 0.022534804196766345, 0.18588288015598664, -0.06809797245296068, -0.10666466222801319, -0.2978240370139247, -0.17405131448686006, -0.2530701168361702, 0.03328701935265599, -0.08638068499794826, -0.2813089788655816, 0.38121486362433643, 0.16763483666887424, 0.16777961031039013, 0.002777713801151549, 0.22466468526909011, 0.09357471124531003, 0.022600594151299447, 0.056947602053696755, 0.24233690687651688, 0.1685027912080841, 0.09963608104590094, -0.31087145464152854, 0.03667698846402345, 0.12766901767645322] |
711.2071 | Toward Equations of Galactic Structure | We find that all classes of galaxies, ranging from disks to spheroids and
from dwarf spheroidals to brightest cluster galaxies, lie on a two dimensional
surface within the space defined by the logarithms of the half-light radius,
r_e, mean surface brightness within r_e, I_e, and internal velocity, V^2 =
(1/2)v_c^2 + sigma^2, where v_c is the rotational velocity and sigma is the
velocity dispersion. If these quantities are expressed in terms of kpc,
L_solar/pc^2, and km/s, then log r_e - log V^2 + log I_e + log Upsilon_e + 0.8
= 0, where we provide a fitting function for Upsilon_e, the mass-to-light ratio
within r_e in units of M_solar/L_solar, that depends only on V and I_e. The
scatter about this surface for our heterogeneous sample of 1925 galaxies is
small (< 0.1 dex) and could be as low as ~ 0.05 dex, or 10%. This small scatter
has three possible implications for how gross galactic structure is affected by
internal factors, such as stellar orbital structure, and by external factors,
such as environment. These factors either 1) play no role beyond generating
some of the observed scatter, 2) move galaxies along the surface, or 3) balance
each other to maintain this surface as the locus of galactic structure
equilibria. We cast the behavior of Upsilon_e in terms of the fraction of
baryons converted to stars, eta, and the concentration of those stars within
the dark matter halo, xi = R_{200}/r_e. We derive eta = 1.9 x 10^{-5} (L/L^*)
Upsilon_* V^{-3} and xi = 1.4 V/r_e. Finally, we present and discuss the
distributions of eta and xi for the full range of galaxies. For systems with
internal velocities comparable to that of the Milky Way (149 < V < 163 km/s),
eta = 0.14 +- 0.05, and xi is, on average, ~ 5 times greater for spheroids than
for disks. (Abridged)
| astro-ph | we find that all classes of galaxies ranging from disks to spheroids and from dwarf spheroidals to brightest cluster galaxies lie on a two dimensional surface within the space defined by the logarithms of the halflight radius r_e mean surface brightness within r_e i_e and internal velocity v2 12v_c2 sigma2 where v_c is the rotational velocity and sigma is the velocity dispersion if these quantities are expressed in terms of kpc l_solarpc2 and kms then log r_e log v2 log i_e log upsilon_e 08 0 where we provide a fitting function for upsilon_e the masstolight ratio within r_e in units of m_solarl_solar that depends only on v and i_e the scatter about this surface for our heterogeneous sample of 1925 galaxies is small 01 dex and could be as low as 005 dex or 10 this small scatter has three possible implications for how gross galactic structure is affected by internal factors such as stellar orbital structure and by external factors such as environment these factors either 1 play no role beyond generating some of the observed scatter 2 move galaxies along the surface or 3 balance each other to maintain this surface as the locus of galactic structure equilibria we cast the behavior of upsilon_e in terms of the fraction of baryons converted to stars eta and the concentration of those stars within the dark matter halo xi r_200r_e we derive eta 19 x 105 ll upsilon_ v3 and xi 14 vr_e finally we present and discuss the distributions of eta and xi for the full range of galaxies for systems with internal velocities comparable to that of the milky way 149 v 163 kms eta 014 005 and xi is on average 5 times greater for spheroids than for disks abridged | [['we', 'find', 'that', 'all', 'classes', 'of', 'galaxies', 'ranging', 'from', 'disks', 'to', 'spheroids', 'and', 'from', 'dwarf', 'spheroidals', 'to', 'brightest', 'cluster', 'galaxies', 'lie', 'on', 'a', 'two', 'dimensional', 'surface', 'within', 'the', 'space', 'defined', 'by', 'the', 'logarithms', 'of', 'the', 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711.2072 | Cascading DGP | We present a higher codimension generalization of the DGP scenario which,
unlike previous attempts, is free of ghost instabilities. The 4D propagator is
made regular by embedding our visible 3-brane within a 4-brane, each with their
own induced gravity terms, in a flat 6D bulk. The model is ghost-free if the
tension on the 3-brane is larger than a certain critical value, while the
induced metric remains flat. The gravitational force law `cascades' from a 6D
behavior at the largest distances followed by a 5D and finally a 4D regime at
the shortest scales.
| hep-th astro-ph hep-ph | we present a higher codimension generalization of the dgp scenario which unlike previous attempts is free of ghost instabilities the 4d propagator is made regular by embedding our visible 3brane within a 4brane each with their own induced gravity terms in a flat 6d bulk the model is ghostfree if the tension on the 3brane is larger than a certain critical value while the induced metric remains flat the gravitational force law cascades from a 6d behavior at the largest distances followed by a 5d and finally a 4d regime at the shortest scales | [['we', 'present', 'a', 'higher', 'codimension', 'generalization', 'of', 'the', 'dgp', 'scenario', 'which', 'unlike', 'previous', 'attempts', 'is', 'free', 'of', 'ghost', 'instabilities', 'the', '4d', 'propagator', 'is', 'made', 'regular', 'by', 'embedding', 'our', 'visible', '3brane', 'within', 'a', '4brane', 'each', 'with', 'their', 'own', 'induced', 'gravity', 'terms', 'in', 'a', 'flat', '6d', 'bulk', 'the', 'model', 'is', 'ghostfree', 'if', 'the', 'tension', 'on', 'the', '3brane', 'is', 'larger', 'than', 'a', 'certain', 'critical', 'value', 'while', 'the', 'induced', 'metric', 'remains', 'flat', 'the', 'gravitational', 'force', 'law', 'cascades', 'from', 'a', '6d', 'behavior', 'at', 'the', 'largest', 'distances', 'followed', 'by', 'a', '5d', 'and', 'finally', 'a', '4d', 'regime', 'at', 'the', 'shortest', 'scales']] | [-0.13904969309000892, 0.16869575415113744, -0.07568461537123361, 0.07233770986265958, -0.09916206418479015, -0.12829548525723053, -0.01351626080886877, 0.29654047792737787, -0.2050246738214442, -0.2588069363908367, 0.049801043659557606, -0.3124337636053245, -0.16278419993629561, 0.11082151959937542, -0.046778497261371704, -0.01440185833114888, 0.004235979833422189, 0.09434952707267663, -0.07577131404739587, -0.2229572086238322, 0.35697320520758946, 0.0981857433290954, 0.27501061540889615, 0.021411779031350695, 0.10422748674024293, -0.04861331258484341, 0.03500102302852146, 0.06932808543515807, -0.15056854305650166, 0.1015166638993678, 0.1510046370887257, 0.03891083470823124, 0.23581054886466168, -0.3900649364879157, -0.29627824472659764, 0.09831909914104704, 0.15741245829539888, 0.1600011153446332, -0.009277719648881876, -0.28696112710724964, 0.062137812985345084, -0.14659701598104724, -0.1431482720208612, 0.04320972505461504, 0.010028393879691337, -0.14190670607445582, -0.22234865117005687, 0.1189871048084163, -0.004337539945907415, -0.0033506706415519535, -0.0852049608576171, -0.050885438436067645, -0.08642013192404696, 0.07048743376211125, 0.1046022254307358, 0.09817254031820104, 0.12118523782393165, -0.1812635873682163, -0.09279745033238718, 0.4123897300438678, -0.11653951379272992, -0.20120535677972626, 0.16439373253230402, -0.16173011611186047, -0.07183989543626283, 0.1427457236110213, 0.06648621650690094, 0.1980820923534803, -0.10662723563988, 0.19115786623405392, 0.0013220386326986743, 0.1514852423780657, 0.11261398823030214, 0.021005353731836412, 0.3072755689524669, 0.17944114789010046, 0.05316330736968666, 0.13573369295633536, -0.04774922495113408, -0.07897786806000674, -0.3695854600618019, -0.10048772131112661, -0.15703506365497696, 0.08619538626752477, -0.1809240702013027, -0.17610115094229262, 0.3779788384451828, 0.09174640442769816, 0.18644327773375713, 0.0895762227765443, 0.2872930240440876, 0.04431702296417999, 0.09524467760607838, 0.0965054104045192, 0.2946184344114141, 0.056095460013664784, 0.059396627017277034, -0.20033039284518306, -0.04086658067783301, 0.13227528809728298] |
711.2073 | AMUSE-Virgo I. Super-massive black holes in low-mass spheroids | We present the first results from the AGN Multiwavelength Survey of
Early-type galaxies in the Virgo cluster (AMUSE-Virgo). This large program
targets 100 early-type galaxies with the Advanced CCD Imaging Spectrometer on
board the Chandra X-ray Observatory and the Multi-band Imaging Photometer on
board the Spitzer Space Telescope, with the aim of providing an unbiased census
of low-level super-massive black hole (SMBH) activity in the local universe.
Here we report on the Chandra observations of the first 16 targets, and combine
them with results from archival data of another, typically more massive, 16
targets. Point-like X-ray emission from a position coincident with the optical
nucleus is detected in 50% of the galaxies (down to our completeness limit of
~4E+38 erg/sec). Two of the X-ray nuclei are hosted by galaxies (VCC1178=N4464
and VCC1297=N4486B) with absolute B magnitudes fainter than -18, where nuclear
star clusters are known to become increasingly common. After carefully
accounting for possible contamination from low mass X-ray binaries, we argue
that the detected nuclear X-ray sources are most likely powered by low-level
accretion on to a SMBH, with a <11% chance contamination in VCC1178, where a
star cluster is barely resolvable in archival Hubble Space Telescope images.
Based on black hole mass estimates from the global properties of the host
galaxies, all the detected nuclei are highly sub-Eddington, with luminosities
in the range -8.4<log(L_0.3-10keV/L_Edd)<-5.9. The incidence of nuclear X-ray
activity increases with the stellar mass M_star of the host galaxy: only
between 3-44% of the galaxies with M_star<1E+10 M_Sun harbor an X-ray active
SMBH. The fraction rises to between 49-87% in galaxies with stellar mass above
1E+10 M_Sun (at the 95% confidence level).
| astro-ph | we present the first results from the agn multiwavelength survey of earlytype galaxies in the virgo cluster amusevirgo this large program targets 100 earlytype galaxies with the advanced ccd imaging spectrometer on board the chandra xray observatory and the multiband imaging photometer on board the spitzer space telescope with the aim of providing an unbiased census of lowlevel supermassive black hole smbh activity in the local universe here we report on the chandra observations of the first 16 targets and combine them with results from archival data of another typically more massive 16 targets pointlike xray emission from a position coincident with the optical nucleus is detected in 50 of the galaxies down to our completeness limit of 4e38 ergsec two of the xray nuclei are hosted by galaxies vcc1178n4464 and vcc1297n4486b with absolute b magnitudes fainter than 18 where nuclear star clusters are known to become increasingly common after carefully accounting for possible contamination from low mass xray binaries we argue that the detected nuclear xray sources are most likely powered by lowlevel accretion on to a smbh with a 11 chance contamination in vcc1178 where a star cluster is barely resolvable in archival hubble space telescope images based on black hole mass estimates from the global properties of the host galaxies all the detected nuclei are highly subeddington with luminosities in the range 84logl_0310kevl_edd59 the incidence of nuclear xray activity increases with the stellar mass m_star of the host galaxy only between 344 of the galaxies with m_star1e10 m_sun harbor an xray active smbh the fraction rises to between 4987 in galaxies with stellar mass above 1e10 m_sun at the 95 confidence level | [['we', 'present', 'the', 'first', 'results', 'from', 'the', 'agn', 'multiwavelength', 'survey', 'of', 'earlytype', 'galaxies', 'in', 'the', 'virgo', 'cluster', 'amusevirgo', 'this', 'large', 'program', 'targets', '100', 'earlytype', 'galaxies', 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711.2074 | Mean Field study of the heavy fermion metamagnetic transition | We investigate the evolution of the heavy fermion ground state under
application of a strong external magnetic field. We present a richer version of
the usual hybridization mean field theory that allows for hybridization in both
the singlet and triplet channels and incorporates a self-consistent Weiss
field. We show that for a magnetic field strength B*, a filling-dependent
fraction of the zero-field hybridization gap, the spin up quasiparticle band
becomes fully polarized--an event marked by a sudden jump in the magnetic
susceptibility. The system exhibits a kind of quantum rigidity in which the
susceptibility (and several other physical observables) are insensitive to
further increases in field strength. This behavior ends abruptly with the
collapse of the hybridization order parameter in a first-order transition to
the normal metallic state. We argue that the feature at B* corresponds to the
"metamagnetic transition" in YbRh2Si2. Our results are in good agreement with
recent experimental measurements.
| cond-mat.str-el | we investigate the evolution of the heavy fermion ground state under application of a strong external magnetic field we present a richer version of the usual hybridization mean field theory that allows for hybridization in both the singlet and triplet channels and incorporates a selfconsistent weiss field we show that for a magnetic field strength b a fillingdependent fraction of the zerofield hybridization gap the spin up quasiparticle band becomes fully polarizedan event marked by a sudden jump in the magnetic susceptibility the system exhibits a kind of quantum rigidity in which the susceptibility and several other physical observables are insensitive to further increases in field strength this behavior ends abruptly with the collapse of the hybridization order parameter in a firstorder transition to the normal metallic state we argue that the feature at b corresponds to the metamagnetic transition in ybrh2si2 our results are in good agreement with recent experimental measurements | [['we', 'investigate', 'the', 'evolution', 'of', 'the', 'heavy', 'fermion', 'ground', 'state', 'under', 'application', 'of', 'a', 'strong', 'external', 'magnetic', 'field', 'we', 'present', 'a', 'richer', 'version', 'of', 'the', 'usual', 'hybridization', 'mean', 'field', 'theory', 'that', 'allows', 'for', 'hybridization', 'in', 'both', 'the', 'singlet', 'and', 'triplet', 'channels', 'and', 'incorporates', 'a', 'selfconsistent', 'weiss', 'field', 'we', 'show', 'that', 'for', 'a', 'magnetic', 'field', 'strength', 'b', 'a', 'fillingdependent', 'fraction', 'of', 'the', 'zerofield', 'hybridization', 'gap', 'the', 'spin', 'up', 'quasiparticle', 'band', 'becomes', 'fully', 'polarizedan', 'event', 'marked', 'by', 'a', 'sudden', 'jump', 'in', 'the', 'magnetic', 'susceptibility', 'the', 'system', 'exhibits', 'a', 'kind', 'of', 'quantum', 'rigidity', 'in', 'which', 'the', 'susceptibility', 'and', 'several', 'other', 'physical', 'observables', 'are', 'insensitive', 'to', 'further', 'increases', 'in', 'field', 'strength', 'this', 'behavior', 'ends', 'abruptly', 'with', 'the', 'collapse', 'of', 'the', 'hybridization', 'order', 'parameter', 'in', 'a', 'firstorder', 'transition', 'to', 'the', 'normal', 'metallic', 'state', 'we', 'argue', 'that', 'the', 'feature', 'at', 'b', 'corresponds', 'to', 'the', 'metamagnetic', 'transition', 'in', 'ybrh2si2', 'our', 'results', 'are', 'in', 'good', 'agreement', 'with', 'recent', 'experimental', 'measurements']] | [-0.19132228360961603, 0.20992816127574576, -0.05003280577169645, 0.05094337498226407, -0.035732397832753546, -0.11552542783875043, 0.0920806546049464, 0.35883146508393304, -0.2428376341133767, -0.28979771121694947, -0.008715754435767746, -0.29351644303246066, -0.12368094374037145, 0.13544149155919719, 0.03475662730387505, -0.0002695701706330354, 0.023187787304416497, 0.06609214986181072, -0.1281739323359871, -0.1695131021752238, 0.32486216223410125, 0.004664813435870834, 0.2936580240146707, 0.08170363779175126, 0.010639066955950481, 0.012388399291771235, 0.113735624403995, 0.06320706960307249, -0.12529525095946734, 0.028371686348691583, 0.20494158718340247, -0.008270474560928857, 0.23184804286536398, -0.39428215116780524, -0.20327601118000926, 0.03563497797345098, 0.10960279245373626, 0.16434530923678847, -0.0699390960511881, -0.29414757545914083, 0.0452175788012401, -0.15287909583984227, -0.13671553657939103, -0.10489201575320288, -0.01993741609991855, -0.019782344460647725, -0.3003709203785668, 0.1209779699026169, 0.06365140398890273, 0.09737448762510194, -0.08454059779571542, -0.09085222299978606, -0.03552559659729977, 0.07963496988750254, 0.07249084781756662, 0.09807169189158556, 0.126950541659781, -0.16843327355805462, -0.10020575363386348, 0.32830010622197037, -0.1343643893048303, -0.07392028689427635, 0.18225364042877756, -0.2077591479385876, -0.10871819234765381, 0.16722775330544998, 0.10401708518605161, 0.07329865439566753, -0.1018929211361124, 0.10434849247134395, -0.0014128296617541881, 0.16659115172231828, -0.017129708089193466, 0.03845313829418992, 0.2298077274536381, 0.16309316363185644, 0.033177606338968144, 0.17478686486199707, -0.12421404875565123, -0.1313264917594609, -0.3020951653035074, -0.18160049909022669, -0.1703180314353143, 0.050320263561909856, -0.0727928270558273, -0.20037811249802936, 0.4254391501466466, 0.18600254225242413, 0.2235458797978743, -0.00871660555975006, 0.2242434190737318, 0.12017894052015309, 0.06544641127566259, 0.05146489447308088, 0.27162233503251676, 0.19871906083021684, 0.1338444179385, -0.29900756517782906, 0.049431367386410026, 0.005341536661498988] |
711.2075 | High-resolution intracellular recordings using a real-time computational
model of the electrode | Intracellular recordings of neuronal membrane potential are a central tool in
neurophysiology. In many situations, especially in vivo, the traditional
limitation of such recordings is the high electrode resistance, which may cause
significant measurement errors. We introduce a computer-aided technique, Active
Electrode Compensation (AEC), based on a digital model of the electrode
interfaced in real time with the electrophysiological setup. The
characteristics of this model are first estimated using white noise current
injection. The electrode and membrane contribution are digitally separated, and
the recording is then made by online subtraction of the electrode contribution.
Tests comparing AEC to other techniques demonstrate that it yields recordings
with improved accuracy. It enables high-frequency recordings in demanding
conditions, such as injection of conductance noise in dynamic-clamp mode, not
feasible with a single high resistance electrode until now. AEC should be
particularly useful to characterize fast phenomena in neurons, in vivo and in
vitro.
| q-bio.NC | intracellular recordings of neuronal membrane potential are a central tool in neurophysiology in many situations especially in vivo the traditional limitation of such recordings is the high electrode resistance which may cause significant measurement errors we introduce a computeraided technique active electrode compensation aec based on a digital model of the electrode interfaced in real time with the electrophysiological setup the characteristics of this model are first estimated using white noise current injection the electrode and membrane contribution are digitally separated and the recording is then made by online subtraction of the electrode contribution tests comparing aec to other techniques demonstrate that it yields recordings with improved accuracy it enables highfrequency recordings in demanding conditions such as injection of conductance noise in dynamicclamp mode not feasible with a single high resistance electrode until now aec should be particularly useful to characterize fast phenomena in neurons in vivo and in vitro | [['intracellular', 'recordings', 'of', 'neuronal', 'membrane', 'potential', 'are', 'a', 'central', 'tool', 'in', 'neurophysiology', 'in', 'many', 'situations', 'especially', 'in', 'vivo', 'the', 'traditional', 'limitation', 'of', 'such', 'recordings', 'is', 'the', 'high', 'electrode', 'resistance', 'which', 'may', 'cause', 'significant', 'measurement', 'errors', 'we', 'introduce', 'a', 'computeraided', 'technique', 'active', 'electrode', 'compensation', 'aec', 'based', 'on', 'a', 'digital', 'model', 'of', 'the', 'electrode', 'interfaced', 'in', 'real', 'time', 'with', 'the', 'electrophysiological', 'setup', 'the', 'characteristics', 'of', 'this', 'model', 'are', 'first', 'estimated', 'using', 'white', 'noise', 'current', 'injection', 'the', 'electrode', 'and', 'membrane', 'contribution', 'are', 'digitally', 'separated', 'and', 'the', 'recording', 'is', 'then', 'made', 'by', 'online', 'subtraction', 'of', 'the', 'electrode', 'contribution', 'tests', 'comparing', 'aec', 'to', 'other', 'techniques', 'demonstrate', 'that', 'it', 'yields', 'recordings', 'with', 'improved', 'accuracy', 'it', 'enables', 'highfrequency', 'recordings', 'in', 'demanding', 'conditions', 'such', 'as', 'injection', 'of', 'conductance', 'noise', 'in', 'dynamicclamp', 'mode', 'not', 'feasible', 'with', 'a', 'single', 'high', 'resistance', 'electrode', 'until', 'now', 'aec', 'should', 'be', 'particularly', 'useful', 'to', 'characterize', 'fast', 'phenomena', 'in', 'neurons', 'in', 'vivo', 'and', 'in', 'vitro']] | [-0.08607910260558128, 0.11286902211916944, -0.04133757715423902, 0.02168538314057514, -0.038455417140891464, -0.21611997288962206, 0.028274341913250584, 0.422243908730646, -0.22814019598066806, -0.29161125706508756, 0.0990123575545537, -0.274272326361388, -0.2027966532142212, 0.26017009334949154, -0.1379247970172825, 0.05276281341289481, 0.09129808348293106, 0.008867288988937313, 0.029201421034134305, -0.16495631163163732, 0.16760245201565946, 0.05399619058084985, 0.3321197277680039, 0.048369189955604575, 0.10835314708917092, -0.04738059244739513, -0.029353556921705604, 0.024698040209089715, -0.03918818176282608, 0.07582718482241034, 0.3405149510425205, 0.07887306921882555, 0.26114895327637594, -0.5112057659806063, -0.24497957643431922, 0.07529408223306139, 0.11537957262558242, 0.14064947452163323, -0.08261737734467411, -0.278487330157465, 0.09464541432758172, -0.136341772377491, -0.06486523181995532, -0.06843775180478891, -0.005906086703762412, 0.025827802962933976, -0.2895681581987689, 0.10400542869853477, 0.022096500249657158, 0.10073942300591929, -0.04114018963649869, -0.08073934440656255, 0.025325062032788993, 0.16628614717473586, 0.030254418323747815, 0.03703809127522011, 0.23884353632728259, -0.12082503849019607, -0.09129185924151291, 0.2905191485059913, -0.06352367879706435, -0.19181849069078452, 0.18668236979749053, -0.14398072031637033, -0.08608052484380702, 0.13413079619407653, 0.1385718869821479, 0.06437599912906687, -0.22846980890259147, 0.009715843532855312, 0.06726017879943053, 0.17802317645400761, 0.07995431943796576, 0.019410312557592988, 0.18377642079566917, 0.265158241254588, -0.005796503890693808, 0.1434619533235673, -0.13712704801155876, 0.004512590902547042, -0.25777961030912894, -0.1247186825548609, -0.1699347389464189, 0.048325981052378966, -0.05975544187444029, -0.17403640245708327, 0.40281395976742107, 0.1761479846923612, 0.14516294012156625, 0.0017044851067475975, 0.35845415947958825, 0.03954585391950483, 0.10387310625674824, -0.01470283705741167, 0.210918201560465, 0.12572594124979028, 0.15042837704192305, -0.2066373414088351, 0.11228600969848533, -0.041709811564845344] |
711.2076 | {\it f}-mode interactions with thin flux tubes: the scattering matrix | We calculate the scattering effects associated with the interaction of a
surface gravity or {\it f} mode with a thin magnetic flux tube embedded in a
realistically stratified medium. We find that the dominant scattered wave is an
$f$ mode with amplitude and phase of 1.17% and around $49^\circ$ relative to
the incident wave, compared to the values of 0.13% and $40^\circ$ estimated
from observations. The extent of scattering into high-order acoustic $p$ modes
is too weak to be accurately characterized. We recover the result that the
degree of scattering is enhanced as (a) the frequency of the incident wave
increases and (b) the flux tube becomes magnetically dominated.
| astro-ph | we calculate the scattering effects associated with the interaction of a surface gravity or it f mode with a thin magnetic flux tube embedded in a realistically stratified medium we find that the dominant scattered wave is an f mode with amplitude and phase of 117 and around 49circ relative to the incident wave compared to the values of 013 and 40circ estimated from observations the extent of scattering into highorder acoustic p modes is too weak to be accurately characterized we recover the result that the degree of scattering is enhanced as a the frequency of the incident wave increases and b the flux tube becomes magnetically dominated | [['we', 'calculate', 'the', 'scattering', 'effects', 'associated', 'with', 'the', 'interaction', 'of', 'a', 'surface', 'gravity', 'or', 'it', 'f', 'mode', 'with', 'a', 'thin', 'magnetic', 'flux', 'tube', 'embedded', 'in', 'a', 'realistically', 'stratified', 'medium', 'we', 'find', 'that', 'the', 'dominant', 'scattered', 'wave', 'is', 'an', 'f', 'mode', 'with', 'amplitude', 'and', 'phase', 'of', '117', 'and', 'around', '49circ', 'relative', 'to', 'the', 'incident', 'wave', 'compared', 'to', 'the', 'values', 'of', '013', 'and', '40circ', 'estimated', 'from', 'observations', 'the', 'extent', 'of', 'scattering', 'into', 'highorder', 'acoustic', 'p', 'modes', 'is', 'too', 'weak', 'to', 'be', 'accurately', 'characterized', 'we', 'recover', 'the', 'result', 'that', 'the', 'degree', 'of', 'scattering', 'is', 'enhanced', 'as', 'a', 'the', 'frequency', 'of', 'the', 'incident', 'wave', 'increases', 'and', 'b', 'the', 'flux', 'tube', 'becomes', 'magnetically', 'dominated']] | [-0.17318317929812527, 0.21326024229160334, -0.05084238412422598, 0.044396522223154815, -0.04380169483499789, -0.06490235554413237, 0.023821621883335874, 0.36485010218046127, -0.2613590608538906, -0.29320078499512664, 0.05742105765272479, -0.3050852655817609, -0.08190188279008032, 0.18573956718933213, 0.03207306668948416, -0.014284139427376715, 0.012660250296269398, 0.022581536263022402, -0.02660970368428976, -0.11580620325008116, 0.31091756161319417, 0.060509523381094596, 0.23942390190215285, 0.039523279691678945, 0.051754787632631596, 0.0037090456232838675, -0.005444582872126901, 0.050004171114628536, -0.11057477952005158, 0.05510342350537214, 0.19951921014954685, 0.02918266611272008, 0.1741727211303291, -0.4145559856717244, -0.21055063769358015, 0.069758676102496, 0.1445736910596729, 0.08413996488505274, -0.00047139826427222394, -0.2617145675072156, 0.04259291669746878, -0.13423761683892685, -0.19218141263470465, 0.023595859189816843, 0.06189083178108985, 0.009518186826634845, -0.3051948957385521, 0.09442832708837243, 0.03840271500827063, 0.007342834401568142, -0.0767545736023148, -0.08038602731780174, -0.10453857082677065, 0.05938435020459252, 0.07661136233145285, 0.1264290313680716, 0.14253136539114042, -0.14097934115438834, -0.006076847485035931, 0.3845699348854362, -0.1154003220379626, -0.159361950087643, 0.15832821674508238, -0.21279846226642712, 0.0023605271160854623, 0.24587021012781957, 0.18120922799165565, 0.1122056581678057, -0.06231410426211569, 0.03050230030577049, 0.0030698590988556024, 0.19531370861105485, 0.10697869040550442, 0.03619169544667826, 0.23694479207021243, 0.14877616940920643, 0.02126019129341622, 0.13700001513256496, -0.20184495160836777, 0.013527851925648583, -0.277967628347901, -0.09926665430768915, -0.1603988626423941, 0.046666559478222104, -0.06127803783742027, -0.17959335543121288, 0.3735612479611001, 0.12603932835691428, 0.20239903737679807, 0.014530571760746454, 0.2861251364026321, 0.17463073223175635, 0.06759325831267692, 0.08177934072638324, 0.32008448848073634, 0.21328228589899223, 0.07310281824248463, -0.2515788634816065, 0.01660354549082321, -0.012799002020833415] |
711.2077 | Lie Groupoids as generalized atlases | Starting with some motivating examples (classical atlases for a manifold,
space of leaves of a foliation, group orbits), we propose to view a Lie
groupoid as a generalized atlas for the "virtual structure" of its orbit space,
the equivalence between atlases being here the smooth Morita equivalence. This
"structure" keeps memory of the isotropy groups and of the smoothness as well.
To take the smoothness into account, we claim that we can go very far by
retaining just a few formal properties of embeddings and surmersions, yielding
a very polymorphous unifying theory. We suggest further developments.
| math.DG math.CT | starting with some motivating examples classical atlases for a manifold space of leaves of a foliation group orbits we propose to view a lie groupoid as a generalized atlas for the virtual structure of its orbit space the equivalence between atlases being here the smooth morita equivalence this structure keeps memory of the isotropy groups and of the smoothness as well to take the smoothness into account we claim that we can go very far by retaining just a few formal properties of embeddings and surmersions yielding a very polymorphous unifying theory we suggest further developments | [['starting', 'with', 'some', 'motivating', 'examples', 'classical', 'atlases', 'for', 'a', 'manifold', 'space', 'of', 'leaves', 'of', 'a', 'foliation', 'group', 'orbits', 'we', 'propose', 'to', 'view', 'a', 'lie', 'groupoid', 'as', 'a', 'generalized', 'atlas', 'for', 'the', 'virtual', 'structure', 'of', 'its', 'orbit', 'space', 'the', 'equivalence', 'between', 'atlases', 'being', 'here', 'the', 'smooth', 'morita', 'equivalence', 'this', 'structure', 'keeps', 'memory', 'of', 'the', 'isotropy', 'groups', 'and', 'of', 'the', 'smoothness', 'as', 'well', 'to', 'take', 'the', 'smoothness', 'into', 'account', 'we', 'claim', 'that', 'we', 'can', 'go', 'very', 'far', 'by', 'retaining', 'just', 'a', 'few', 'formal', 'properties', 'of', 'embeddings', 'and', 'surmersions', 'yielding', 'a', 'very', 'polymorphous', 'unifying', 'theory', 'we', 'suggest', 'further', 'developments']] | [-0.13295582105944814, 0.069551670017015, -0.14124275393489943, 0.10240978069578935, -0.12379797212779522, -0.10391499858447596, 0.06355453741271049, 0.3931539081625248, -0.33636241829709, -0.28391337986839443, 0.09661960984996863, -0.22617988105814316, -0.12678534021895183, 0.1703624586807564, -0.1211483232284847, -0.019729753810985896, 0.0781514891276234, 0.050847985611395224, -0.15256558879964838, -0.20375716340188918, 0.3762854001680879, 0.047303525215063834, 0.20810850988338261, -0.0065694360895768595, 0.1488692778848896, -0.016490829387973797, 0.0077876820418934685, 0.051323111163525795, -0.10746684989342037, 0.15334285142047233, 0.24765382545056605, 0.13377021495743016, 0.2739735092232494, -0.39479712395879785, -0.2141884432664435, 0.0831491244956851, 0.11545372080351961, 0.0764257955315866, -0.04936254228661327, -0.3348057719143598, 0.09294843029806782, -0.17183127950778918, -0.14921833946810742, -0.13826905430147524, 0.019431875513768508, -0.03501367397900475, -0.17512551420490796, -0.014129097443564158, 0.11318457939441463, 0.09970641548892385, -0.09395575307824305, -0.05783799173016297, -0.03596146594806525, 0.15113367963288177, 0.047037750913908605, 0.009017825293305673, 0.1342559210980605, -0.10746945538558066, -0.1032455228857304, 0.40710672299426637, -0.04730829534267909, -0.20064678465653407, 0.1946403866143603, -0.15167228583932707, -0.19781824984636745, 0.0921470389701426, 0.1005419020026334, 0.10604171749008329, -0.08517142342231972, 0.15884019177480552, -0.05324976316064988, 0.08657134034744415, 0.058898453956077755, 0.04192189996767985, 0.17616370135035955, 0.1924742148110741, 0.07649392900547307, 0.10738484035981329, -0.045305283377437215, -0.07061195051983783, -0.3685970403744202, -0.18745604936082505, -0.08777319161515487, 0.1007243865684263, -0.08172386329786509, -0.1759447892073934, 0.3976541331037879, 0.08790161636792809, 0.2522887731338606, 0.13063895315127938, 0.25506644072501283, 0.020668326918721985, 0.08273956249713113, 0.04239594863825723, 0.20983700848974926, 0.18193246340134034, 0.021386991892206043, -0.07627096397949285, 0.0005475181203923727, 0.1270055962040236] |
711.2078 | Figure-Figure Interaction Between Bodies Having Arbitrary Shapes and
Mass Distributions: A Power Series Expansion Approach | We derive an expression for the mutual gravitational force and torque of two
bodies having arbitrary shapes and mass distributions, as an expansion in power
series of their products of inertia and of the relative coordinates of their
centres of mass. The absolute convergence of all the power series developed is
rigorously demonstrated. The absence of transcendental functions makes this
formalism suitable for fast numerical applications. The products of inertia
used here are directly related to the spherical harmonics coefficients, and we
provide a detailed analysis of this relationship.
| astro-ph | we derive an expression for the mutual gravitational force and torque of two bodies having arbitrary shapes and mass distributions as an expansion in power series of their products of inertia and of the relative coordinates of their centres of mass the absolute convergence of all the power series developed is rigorously demonstrated the absence of transcendental functions makes this formalism suitable for fast numerical applications the products of inertia used here are directly related to the spherical harmonics coefficients and we provide a detailed analysis of this relationship | [['we', 'derive', 'an', 'expression', 'for', 'the', 'mutual', 'gravitational', 'force', 'and', 'torque', 'of', 'two', 'bodies', 'having', 'arbitrary', 'shapes', 'and', 'mass', 'distributions', 'as', 'an', 'expansion', 'in', 'power', 'series', 'of', 'their', 'products', 'of', 'inertia', 'and', 'of', 'the', 'relative', 'coordinates', 'of', 'their', 'centres', 'of', 'mass', 'the', 'absolute', 'convergence', 'of', 'all', 'the', 'power', 'series', 'developed', 'is', 'rigorously', 'demonstrated', 'the', 'absence', 'of', 'transcendental', 'functions', 'makes', 'this', 'formalism', 'suitable', 'for', 'fast', 'numerical', 'applications', 'the', 'products', 'of', 'inertia', 'used', 'here', 'are', 'directly', 'related', 'to', 'the', 'spherical', 'harmonics', 'coefficients', 'and', 'we', 'provide', 'a', 'detailed', 'analysis', 'of', 'this', 'relationship']] | [-0.14729428377651263, 0.07384342641675624, -0.10999004248780815, 0.05724079031471079, -0.04823689478229773, -0.008249508870995782, -0.008916459773572978, 0.34876763734840943, -0.26232492409677904, -0.2792602407829731, 0.08919295860491065, -0.24295055024388634, -0.12901460018343805, 0.2539863325890907, -0.027255384466647475, 0.06519174152001571, 0.005751800841097249, 0.05222868641578132, -0.0921063165839636, -0.2070991871224486, 0.325654335780425, 0.06776513321471683, 0.24277814560873287, 0.05668523118914932, 0.11809949700333429, 0.018118522292149535, -0.07377472472000407, -0.002607880447980728, -0.14994653755945436, 0.17765153680792015, 0.16843815595225503, 0.1141560822620653, 0.23519447197342355, -0.42774949974139753, -0.12769795151910054, 0.10830354306512, 0.1228935558380287, 0.07579471788295869, -0.04049031914661774, -0.20640260015164366, 0.031086228379791372, -0.2386995475121847, -0.19072100578734044, -0.1526072457474604, 0.07788941212354249, 0.10849951557014556, -0.28602414156488154, 0.11146820146130042, 0.06868894446912298, 0.09517292983913689, -0.10317552182692616, -0.11535485159982456, 0.004036669352541814, 0.17728889538916978, 0.08627278340216517, -0.0643614421446881, 0.13963747624140443, -0.10882146171492975, -0.06510165897250343, 0.39141450515749415, -0.02833222034858184, -0.22976522632937335, 0.18595772759800547, -0.18111799136222748, -0.0959496599873214, 0.11301022727209865, 0.18709439609011405, 0.16511933849287336, -0.1547132633479961, 0.05457465042715913, 0.015119955425014656, 0.1228933639070961, 0.09306657519924004, 0.0071302336965049255, 0.21560904304130693, 0.06586268994161922, 0.03370582771728213, 0.14750537150173207, -0.08384756537761247, -0.05705858881355085, -0.31325803801752206, -0.1807223884909158, -0.19383062201609647, 0.030766633408552225, -0.1398167644903388, -0.17667661009541466, 0.3884097719460391, 0.08279565446800814, 0.18200927846175566, 0.06839274830613913, 0.3207418649677145, 0.1624692849438177, 0.03342841399226631, 0.013977981156805593, 0.2538460142743052, 0.20424291113747306, 0.08419045316725132, -0.23415784448322452, 0.03623594882573639, 0.0711911100308212] |
711.2079 | Top Jets in the Peak Region: Factorization Analysis with NLL Resummation | We consider top-quarks produced at large energy in e+e- collisions, and
address the question of what top-mass can be measured from reconstruction. The
production process is characterized by well separated scales: the
center-of-mass energy, Q, the top mass, m, the top decay width, Gamma_t, and
also LambdaQCD; scales which can be disentangled with effective theory methods.
In particular we show how the mass measurement depends on the way in which soft
radiation is treated, and that this can shift the mass peak by an amount of
order Q LambdaQCD/m. We sum large logs for Q >> m >> Gamma_t > LambdaQCD and
demonstrate that the renormalization group ties together the jet and soft
interactions below the scale m. Necessary conditions for the invariant mass
spectrum to be protected from large logs are formulated. Results for the
cross-section are presented at next-to-leading order with next-to-leading-log
resummation, for invariant masses in the peak region and the tail region. Using
our results we also predict the thrust distribution for massive quark jets at
NLL order for large thrust. We demonstrate that soft radiation can be precisely
controlled using data on massless jet production, and that in principle, a
short distance mass parameter can be measured using jets with precision better
than LambdaQCD.
| hep-ph nucl-th | we consider topquarks produced at large energy in ee collisions and address the question of what topmass can be measured from reconstruction the production process is characterized by well separated scales the centerofmass energy q the top mass m the top decay width gamma_t and also lambdaqcd scales which can be disentangled with effective theory methods in particular we show how the mass measurement depends on the way in which soft radiation is treated and that this can shift the mass peak by an amount of order q lambdaqcdm we sum large logs for q m gamma_t lambdaqcd and demonstrate that the renormalization group ties together the jet and soft interactions below the scale m necessary conditions for the invariant mass spectrum to be protected from large logs are formulated results for the crosssection are presented at nexttoleading order with nexttoleadinglog resummation for invariant masses in the peak region and the tail region using our results we also predict the thrust distribution for massive quark jets at nll order for large thrust we demonstrate that soft radiation can be precisely controlled using data on massless jet production and that in principle a short distance mass parameter can be measured using jets with precision better than lambdaqcd | [['we', 'consider', 'topquarks', 'produced', 'at', 'large', 'energy', 'in', 'ee', 'collisions', 'and', 'address', 'the', 'question', 'of', 'what', 'topmass', 'can', 'be', 'measured', 'from', 'reconstruction', 'the', 'production', 'process', 'is', 'characterized', 'by', 'well', 'separated', 'scales', 'the', 'centerofmass', 'energy', 'q', 'the', 'top', 'mass', 'm', 'the', 'top', 'decay', 'width', 'gamma_t', 'and', 'also', 'lambdaqcd', 'scales', 'which', 'can', 'be', 'disentangled', 'with', 'effective', 'theory', 'methods', 'in', 'particular', 'we', 'show', 'how', 'the', 'mass', 'measurement', 'depends', 'on', 'the', 'way', 'in', 'which', 'soft', 'radiation', 'is', 'treated', 'and', 'that', 'this', 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711.208 | Hadron Loops: General Theorems and Application to Charmonium | In this paper we develop a formalism for incorporating hadron loops in the
quark model. We derive expressions for mass shifts, continuum components and
mixing amplitudes of "quenched" quark model states due to hadron loops, as
perturbation series in the valence-continuum coupling Hamiltonian. We prove
three general theorems regarding the effects of hadron loops, which show that
given certain constraints on the external "bare" quark model states, the
valence-continuum coupling, and the hadrons summed in the loops, the following
results hold: (1) The loop mass shifts are identical for all states within a
given N,L multiplet. (2) These states have the same total open-flavor decay
widths. (3) Loop-induced valence configuration mixing vanishes provided that
${\L}_i \neq \L_f$ or $\S_i \neq \S_f$. The charmonium system is used as a
numerical case study, with the $^3\P_0$ decay model providing the
valence-continuum coupling. We evaluate the mass shifts and continuum mixing
numerically for all 1S, 1P and 2S charmonium valence states due to loops of D,
D$^*$, D$_s$ and D$_s^*$ meson pairs. We find that the mass shifts are quite
large, but are numerically similar for all the low-lying charmonium states, as
suggested by the first theorem. Thus, loop mass shifts may have been "hidden"
in the valence quark model by a change of parameters. The two-meson continuum
components of the physical charmonium states are also found to be large,
creating challenges for the interpretation of the constituent quark model.
| hep-ph | in this paper we develop a formalism for incorporating hadron loops in the quark model we derive expressions for mass shifts continuum components and mixing amplitudes of quenched quark model states due to hadron loops as perturbation series in the valencecontinuum coupling hamiltonian we prove three general theorems regarding the effects of hadron loops which show that given certain constraints on the external bare quark model states the valencecontinuum coupling and the hadrons summed in the loops the following results hold 1 the loop mass shifts are identical for all states within a given nl multiplet 2 these states have the same total openflavor decay widths 3 loopinduced valence configuration mixing vanishes provided that l_i neq l_f or s_i neq s_f the charmonium system is used as a numerical case study with the 3p_0 decay model providing the valencecontinuum coupling we evaluate the mass shifts and continuum mixing numerically for all 1s 1p and 2s charmonium valence states due to loops of d d d_s and d_s meson pairs we find that the mass shifts are quite large but are numerically similar for all the lowlying charmonium states as suggested by the first theorem thus loop mass shifts may have been hidden in the valence quark model by a change of parameters the twomeson continuum components of the physical charmonium states are also found to be large creating challenges for the interpretation of the constituent quark model | [['in', 'this', 'paper', 'we', 'develop', 'a', 'formalism', 'for', 'incorporating', 'hadron', 'loops', 'in', 'the', 'quark', 'model', 'we', 'derive', 'expressions', 'for', 'mass', 'shifts', 'continuum', 'components', 'and', 'mixing', 'amplitudes', 'of', 'quenched', 'quark', 'model', 'states', 'due', 'to', 'hadron', 'loops', 'as', 'perturbation', 'series', 'in', 'the', 'valencecontinuum', 'coupling', 'hamiltonian', 'we', 'prove', 'three', 'general', 'theorems', 'regarding', 'the', 'effects', 'of', 'hadron', 'loops', 'which', 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711.2081 | Perturbations of the signum-Gordon model | We investigate a perturbation of a scalar field model (called here the
signum-Gordon model) with the potential $V(f)=|f|$. The perturbation
generalizes the signum-Gordon model to the signum-Klein-Gordon model i.e. to
the case $V(f)=|f|-{1/2}\lambda f^2$, where $\lambda$ is a small parameter.
Such a generalization breaks the scaling symmetry of the signum-Gordon model.
In this paper we concentrate on solutions for self-similar initial data. Such
data are particulary useful for identification of the effects caused by the
term that breaks the scaling symmetry. We have found that the behaviour of the
solutions is quite interesting - they escape and return periodically to the
self-similar initial data.
| hep-th | we investigate a perturbation of a scalar field model called here the signumgordon model with the potential vff the perturbation generalizes the signumgordon model to the signumkleingordon model ie to the case vff12lambda f2 where lambda is a small parameter such a generalization breaks the scaling symmetry of the signumgordon model in this paper we concentrate on solutions for selfsimilar initial data such data are particulary useful for identification of the effects caused by the term that breaks the scaling symmetry we have found that the behaviour of the solutions is quite interesting they escape and return periodically to the selfsimilar initial data | [['we', 'investigate', 'a', 'perturbation', 'of', 'a', 'scalar', 'field', 'model', 'called', 'here', 'the', 'signumgordon', 'model', 'with', 'the', 'potential', 'vff', 'the', 'perturbation', 'generalizes', 'the', 'signumgordon', 'model', 'to', 'the', 'signumkleingordon', 'model', 'ie', 'to', 'the', 'case', 'vff12lambda', 'f2', 'where', 'lambda', 'is', 'a', 'small', 'parameter', 'such', 'a', 'generalization', 'breaks', 'the', 'scaling', 'symmetry', 'of', 'the', 'signumgordon', 'model', 'in', 'this', 'paper', 'we', 'concentrate', 'on', 'solutions', 'for', 'selfsimilar', 'initial', 'data', 'such', 'data', 'are', 'particulary', 'useful', 'for', 'identification', 'of', 'the', 'effects', 'caused', 'by', 'the', 'term', 'that', 'breaks', 'the', 'scaling', 'symmetry', 'we', 'have', 'found', 'that', 'the', 'behaviour', 'of', 'the', 'solutions', 'is', 'quite', 'interesting', 'they', 'escape', 'and', 'return', 'periodically', 'to', 'the', 'selfsimilar', 'initial', 'data']] | [-0.14521567204432323, 0.11292606264832292, -0.10617894333980904, 0.09778561969610429, -0.06375433730035282, -0.12879368602897567, 0.014607799217556741, 0.2973303920451072, -0.26537290218719606, -0.25900375684446625, 0.12144816672719905, -0.29465422576459327, -0.1505684133084251, 0.1294789789774741, -0.0010481385806907374, 0.04850382918704043, 0.010567814637307483, 0.04784011567878251, -0.031065021449063746, -0.17714120313008824, 0.35176810056044916, 0.03618184632003898, 0.25578571439693026, 0.018791582057307854, 0.07950818634449071, -0.03181097824771953, 0.0244118121710818, 0.02904170589281781, -0.1626667916703575, 0.061036497004685164, 0.13682243394628535, 0.07829381189410492, 0.2409321106831995, -0.3892003617221766, -0.2281767823502864, 0.1299070313775746, 0.1520117029598407, 0.15423504152971476, -0.0651953552842675, -0.2736992480182596, 0.06870435580316156, -0.15817285855162408, -0.18294516866473426, -0.08712712831629238, 0.03776131705081293, 0.020986013441798415, -0.3102854510935226, 0.09750924472890721, 0.07747548653474447, 0.011500185430032606, -0.09781395081006507, -0.04397458816408226, -0.03680667744276326, 0.07440527210399361, 0.11646959308124526, 0.030615119024936, 0.07562293044272994, -0.15998129184486917, -0.04261560185402079, 0.42478567830259256, -0.09754935666771218, -0.23786535997884256, 0.1505643681825904, -0.1373597608030875, -0.1656648044953916, 0.0817992483256477, 0.16119985152404792, 0.10464523583281748, -0.1213856192886608, 0.14003855167452411, -0.05673592767821127, 0.15423022774924147, 0.03041145065338305, -0.015261521765796265, 0.15671358397691557, 0.17486300776334535, 0.027176806447326694, 0.15153918082429335, -0.07935749619304765, -0.13940670041570274, -0.3229954181202125, -0.08167896696855084, -0.14861643370609767, 0.04486751853313187, -0.09993397681452311, -0.19250238996626126, 0.426606950497642, 0.17685916464738916, 0.22665094342636, 0.06351992167938168, 0.23644296557522645, 0.14032824015899534, 0.07762799650836404, 0.06842389118415074, 0.23612478803520523, 0.07915310140717591, 0.09758547389658519, -0.21826282220703577, 0.028596842274217323, 0.04094510709885323] |
711.2082 | Implementation of a non-equilibrium Green's function method to calculate
spin transfer torque | We present an implementation of the steady state Keldysh approach in a
Green's function multiple scattering scheme to calculate the non-equilibrium
spin density. This density is used to obtain the spin transfer torque in
junctions showing the magnetoresistance effect. We use our implementation to
study the spin transfer torque in metallic Co/Cu/Co junctions.
| cond-mat.mes-hall | we present an implementation of the steady state keldysh approach in a greens function multiple scattering scheme to calculate the nonequilibrium spin density this density is used to obtain the spin transfer torque in junctions showing the magnetoresistance effect we use our implementation to study the spin transfer torque in metallic cocuco junctions | [['we', 'present', 'an', 'implementation', 'of', 'the', 'steady', 'state', 'keldysh', 'approach', 'in', 'a', 'greens', 'function', 'multiple', 'scattering', 'scheme', 'to', 'calculate', 'the', 'nonequilibrium', 'spin', 'density', 'this', 'density', 'is', 'used', 'to', 'obtain', 'the', 'spin', 'transfer', 'torque', 'in', 'junctions', 'showing', 'the', 'magnetoresistance', 'effect', 'we', 'use', 'our', 'implementation', 'to', 'study', 'the', 'spin', 'transfer', 'torque', 'in', 'metallic', 'cocuco', 'junctions']] | [-0.21685168661071724, 0.07283002151564018, -0.11555282283082323, 0.031359145883470774, -0.03867334984506498, -0.08125360200251892, 0.017529529717065534, 0.4103785273882578, -0.2509470880383028, -0.27308289211173103, -0.04606130873599915, -0.23837874348292937, -0.15000186213907205, 0.21118666793940202, 0.05668358798226658, 0.048013862156125776, -0.007160850361270725, -0.07871194517696803, -0.1175037812230722, -0.1587109299121811, 0.2854216339699221, -0.027338908642600728, 0.32901778207424115, 0.10504849367546586, 0.0609131569200951, 0.06243134526325003, 0.1270713471051938, -0.046585805046389685, -0.17088910076275188, 0.0535165481752593, 0.2619789455718589, -0.08100678256871004, 0.17318596416768037, -0.502458194692461, -0.19928665713732183, -0.02100873977508185, 0.12878089382770067, 0.24257634129410363, -0.04715637573620902, -0.2312990202796909, -0.01875570583385679, -0.2693871454564187, -0.13240211314679878, -0.1383614565799329, -0.0026142787680311025, -0.03155101962686288, -0.2682542376009361, 0.10171957349158683, 0.029519216166282038, -0.008174192845680803, -0.05046870754504541, -0.1077446492898436, -0.02971711340975368, 0.06997247633330946, -0.014401978817504813, 0.055285392509211065, 0.2130996562224233, -0.12282138609081367, -0.13622734685129714, 0.21399641520220716, -0.09746810431890893, -0.205768587876041, 0.13921380377778747, -0.19153245763396318, -0.05756557629144979, 0.08861117277575552, 0.14640076159728024, 0.17980751549860216, -0.21760042180430214, 0.03234734413881769, 0.019432171138073755, 0.1498593788523719, 0.010367320411188423, 0.008542778550313329, 0.23476255214158095, 0.22187123823700086, 0.04520156527957264, 0.19584229414544577, -0.17196385554512436, -0.0890191415728966, -0.23095641277383416, -0.19325603511325032, -0.2760233640459911, 0.15825840976651548, -0.00167800312123771, -0.19679437720058662, 0.3930613262348074, 0.2742264761396174, 0.1596130718705508, 0.04311459426293677, 0.36719599984726814, 0.20162467327504857, 0.045229911312179745, 0.0815876290237285, 0.2039340411154729, 0.24388377367132255, 0.12648264051608318, -0.4129234027416217, 0.042664681710654274, 0.01105773107166279] |
711.2083 | Pursuing the double affine Grassmannian I: transversal slices via
instantons on A_k-singularities | This paper is the first in a series that describe a conjectural analog of the
geometric Satake isomorphism for an affine Kac-Moody group. In this paper we
construct a model for the singularities of some would-be Schubert varieties in
the affine Grassmannian for an affine Kac-Moody group. We formulate a
conjecture describing the (local) intersection cohomology of these varieties in
terms of integrable representations of the Langlands dual affine Kac-Moody
group and check this conjecture in a number of cases. Roughly speaking the
above singularities are constructed by looking at the Uhlenbeck space of
instantons on the quotient of the affine plane by a finite cyclic subgroup of
SL(2).
| math.AG hep-th math.RT | this paper is the first in a series that describe a conjectural analog of the geometric satake isomorphism for an affine kacmoody group in this paper we construct a model for the singularities of some wouldbe schubert varieties in the affine grassmannian for an affine kacmoody group we formulate a conjecture describing the local intersection cohomology of these varieties in terms of integrable representations of the langlands dual affine kacmoody group and check this conjecture in a number of cases roughly speaking the above singularities are constructed by looking at the uhlenbeck space of instantons on the quotient of the affine plane by a finite cyclic subgroup of sl2 | [['this', 'paper', 'is', 'the', 'first', 'in', 'a', 'series', 'that', 'describe', 'a', 'conjectural', 'analog', 'of', 'the', 'geometric', 'satake', 'isomorphism', 'for', 'an', 'affine', 'kacmoody', 'group', 'in', 'this', 'paper', 'we', 'construct', 'a', 'model', 'for', 'the', 'singularities', 'of', 'some', 'wouldbe', 'schubert', 'varieties', 'in', 'the', 'affine', 'grassmannian', 'for', 'an', 'affine', 'kacmoody', 'group', 'we', 'formulate', 'a', 'conjecture', 'describing', 'the', 'local', 'intersection', 'cohomology', 'of', 'these', 'varieties', 'in', 'terms', 'of', 'integrable', 'representations', 'of', 'the', 'langlands', 'dual', 'affine', 'kacmoody', 'group', 'and', 'check', 'this', 'conjecture', 'in', 'a', 'number', 'of', 'cases', 'roughly', 'speaking', 'the', 'above', 'singularities', 'are', 'constructed', 'by', 'looking', 'at', 'the', 'uhlenbeck', 'space', 'of', 'instantons', 'on', 'the', 'quotient', 'of', 'the', 'affine', 'plane', 'by', 'a', 'finite', 'cyclic', 'subgroup', 'of', 'sl2']] | [-0.21351268671350468, 0.042028533638969766, -0.12472058269152538, 0.06483828693995713, -0.11012604856573113, -0.11013948149261397, -0.023362420834686367, 0.2765384460649872, -0.35865042711941336, -0.16995562254152166, 0.12638560507858787, -0.18340314656854906, -0.19488278892608957, 0.17032069004773068, -0.21645192555023715, -0.03321824767071446, -0.017414208612652547, 0.08929335066638545, -0.14140308918986777, -0.33762246748932356, 0.438218879391687, -0.03736446215183722, 0.25910331002957776, 0.016121652251784475, 0.1605131118793314, 0.021263834892199674, -0.01443413458764553, -0.057118085936212364, -0.1250528591632797, 0.1594310760361339, 0.3827031565949731, 0.036269924936628124, 0.16416221313870624, -0.3713994043187127, -0.11042456705242805, 0.2120316618703169, 0.18388482948355034, 0.062229919469479575, -0.011405895958620406, -0.2769739587423862, 0.05705794576692198, -0.19016106042224878, -0.20882725413170977, -0.023328291337697878, 0.049485205078856384, -0.029806930486352072, -0.1758819262010105, -0.0013734120106615058, 0.07523456289338956, 0.18034331675340132, -0.09450687333907283, -0.06731296519518172, -0.043406214599215655, 0.06552635250749801, -0.040335749039947646, 0.06007680023909299, 0.06633076029017977, -0.13545344178906615, -0.1760959991557233, 0.3888317893917134, -0.010188869758158785, -0.22065649043401242, 0.049241536835191446, -0.1749428180900804, -0.21970117879911846, 0.11861751802744122, 0.09637991133052001, 0.1190310929694433, -0.011855654666251545, 0.2024576545115176, -0.17583171935504252, -0.03755579654815171, 0.08996717659799262, -0.04581607460821851, 0.1772829906656108, 0.07902965161505096, 0.04278606134829957, 0.13831153316337855, 0.03636259626471138, -0.04421827171442159, -0.45239816585538584, -0.23428516022843915, -0.08601717091776397, 0.13155888915574604, -0.143560658721547, -0.18472470737857008, 0.4251115635302294, 0.06249923547815292, 0.19131224630656865, 0.16201656691328442, 0.17262309281275087, 0.0498009875604729, 0.057138832969539755, 0.03418361344331995, 0.13599084777497994, 0.2298511416104477, -0.08637355182986331, -0.19374079778929318, -0.06302462796330316, 0.27330969266354216] |
711.2084 | Gauge Drivers for the Generalized Harmonic Einstein Equations | The generalized harmonic representation of Einstein's equation is manifestly
hyperbolic for a large class of gauge conditions. Unfortunately most of the
useful gauges developed over the past several decades by the numerical
relativity community are incompatible with the hyperbolicity of the equations
in this form. This paper presents a new method of imposing gauge conditions
that preserves hyperbolicity for a much wider class of conditions, including as
special cases many of the standard ones used in numerical relativity: e.g.,
K-freezing, Gamma-freezing, Bona-Masso slicing, conformal Gamma-drivers, etc.
Analytical and numerical results are presented which test the stability and the
effectiveness of this new gauge driver evolution system.
| gr-qc | the generalized harmonic representation of einsteins equation is manifestly hyperbolic for a large class of gauge conditions unfortunately most of the useful gauges developed over the past several decades by the numerical relativity community are incompatible with the hyperbolicity of the equations in this form this paper presents a new method of imposing gauge conditions that preserves hyperbolicity for a much wider class of conditions including as special cases many of the standard ones used in numerical relativity eg kfreezing gammafreezing bonamasso slicing conformal gammadrivers etc analytical and numerical results are presented which test the stability and the effectiveness of this new gauge driver evolution system | [['the', 'generalized', 'harmonic', 'representation', 'of', 'einsteins', 'equation', 'is', 'manifestly', 'hyperbolic', 'for', 'a', 'large', 'class', 'of', 'gauge', 'conditions', 'unfortunately', 'most', 'of', 'the', 'useful', 'gauges', 'developed', 'over', 'the', 'past', 'several', 'decades', 'by', 'the', 'numerical', 'relativity', 'community', 'are', 'incompatible', 'with', 'the', 'hyperbolicity', 'of', 'the', 'equations', 'in', 'this', 'form', 'this', 'paper', 'presents', 'a', 'new', 'method', 'of', 'imposing', 'gauge', 'conditions', 'that', 'preserves', 'hyperbolicity', 'for', 'a', 'much', 'wider', 'class', 'of', 'conditions', 'including', 'as', 'special', 'cases', 'many', 'of', 'the', 'standard', 'ones', 'used', 'in', 'numerical', 'relativity', 'eg', 'kfreezing', 'gammafreezing', 'bonamasso', 'slicing', 'conformal', 'gammadrivers', 'etc', 'analytical', 'and', 'numerical', 'results', 'are', 'presented', 'which', 'test', 'the', 'stability', 'and', 'the', 'effectiveness', 'of', 'this', 'new', 'gauge', 'driver', 'evolution', 'system']] | [-0.13641880723891905, 0.06801198327516034, -0.08518063228179529, 0.06669939511672603, -0.11017349839111049, -0.12364816028642857, -0.054873594176702345, 0.300335903742432, -0.20209394735442385, -0.2719673972974703, 0.11919881331336513, -0.19171069024664178, -0.17494415943691669, 0.24205914433272466, -0.06418731692021043, 0.12024082764372844, 0.07951559586387164, 0.018160234601010832, -0.11419618367646975, -0.2585966403978126, 0.3566545962346989, 0.038469687351749, 0.27268655355838894, 0.03231749929560041, 0.10500728778396416, -0.010439277375659462, -0.037482915577270744, 0.04795445291025864, -0.12673577613874568, 0.11226705123570938, 0.22817465080201482, 0.14370641295427403, 0.2940461182474041, -0.4139603648551749, -0.25175283110510666, 0.05973742391068705, 0.10179854111417617, 0.13241613445943673, -0.08796378678120675, -0.310555373146696, 0.0714130103362055, -0.18357793589402893, -0.18022630572007084, -0.10300008379809052, -0.008531684865180439, 0.010479878272535732, -0.2512541738094635, 0.08138882495390559, 0.055953400459895546, 0.06924476937472242, -0.05383001762279535, -0.08512256081211517, -0.0063861481420406435, 0.082663082657834, 0.11248844328508215, -0.01953090554175591, 0.06375270299342217, -0.1415560042363528, -0.08844402294777767, 0.45864986042374545, -0.047720483928077935, -0.27390562564256665, 0.1985976588415, -0.13606132085444134, -0.1918786646870589, 0.10726363534329332, 0.14550048894999387, 0.1810754022212898, -0.18404222835868017, 0.11570926369913827, -0.0775682426609316, 0.0704267353285104, 0.0996754077688149, 0.02391722713805084, 0.15718968970321337, 0.12639062563680764, 0.06815338877393656, 0.11330503807855245, 0.01452532355465646, -0.14234178100974815, -0.39310194160992695, -0.16300309562458865, -0.11469994147208709, 0.037256541297979, -0.11894092307786584, -0.169606006323378, 0.4334622950731659, 0.15610046831942367, 0.08201018847000685, 0.08786189139400184, 0.24304816279632663, 0.09853389726904248, 0.07148860729507452, 0.05159785103920883, 0.2502040299383507, 0.16146038034569146, 0.11703689449502933, -0.1832182650020328, 0.004528907111854953, 0.10741869491317028] |
711.2085 | Evidence for weak magnetic fields in early-type emission stars | We report the results of our study of magnetic fields in a sample of 15 Be
stars using spectropolarimetric data obtained at the European Southern
Observatory with the multi-mode instrument FORS1 installed at the 8m Kueyen
telescope. We detect weak photospheric magnetic fields in four stars, HD56014,
HD148184, HD155806, and HD181615. We note that for HD181615 the evolutionary
status is not obvious due to the fact that it is a binary system currently
observed in the initial rapid phase of mass exchange between the two
components. Further, we notify the possible presence of distinct circular
polarisation features in the circumstellar components of Ca II H&K in three
stars, HD58011, HD117357, and HD181615, hinting at a probable presence of
magnetic fields in the circumstellar mass loss disks of these stars. We
emphasize the need for future spectropolarimetric observations of Be stars with
detected magnetic fields to study the temporal evolution of their magnetic
fields and the correlation of magnetic field properties with dynamical
phenomena taking place in the gaseous circumstellar disks of these stars.
| astro-ph | we report the results of our study of magnetic fields in a sample of 15 be stars using spectropolarimetric data obtained at the european southern observatory with the multimode instrument fors1 installed at the 8m kueyen telescope we detect weak photospheric magnetic fields in four stars hd56014 hd148184 hd155806 and hd181615 we note that for hd181615 the evolutionary status is not obvious due to the fact that it is a binary system currently observed in the initial rapid phase of mass exchange between the two components further we notify the possible presence of distinct circular polarisation features in the circumstellar components of ca ii hk in three stars hd58011 hd117357 and hd181615 hinting at a probable presence of magnetic fields in the circumstellar mass loss disks of these stars we emphasize the need for future spectropolarimetric observations of be stars with detected magnetic fields to study the temporal evolution of their magnetic fields and the correlation of magnetic field properties with dynamical phenomena taking place in the gaseous circumstellar disks of these stars | [['we', 'report', 'the', 'results', 'of', 'our', 'study', 'of', 'magnetic', 'fields', 'in', 'a', 'sample', 'of', '15', 'be', 'stars', 'using', 'spectropolarimetric', 'data', 'obtained', 'at', 'the', 'european', 'southern', 'observatory', 'with', 'the', 'multimode', 'instrument', 'fors1', 'installed', 'at', 'the', '8m', 'kueyen', 'telescope', 'we', 'detect', 'weak', 'photospheric', 'magnetic', 'fields', 'in', 'four', 'stars', 'hd56014', 'hd148184', 'hd155806', 'and', 'hd181615', 'we', 'note', 'that', 'for', 'hd181615', 'the', 'evolutionary', 'status', 'is', 'not', 'obvious', 'due', 'to', 'the', 'fact', 'that', 'it', 'is', 'a', 'binary', 'system', 'currently', 'observed', 'in', 'the', 'initial', 'rapid', 'phase', 'of', 'mass', 'exchange', 'between', 'the', 'two', 'components', 'further', 'we', 'notify', 'the', 'possible', 'presence', 'of', 'distinct', 'circular', 'polarisation', 'features', 'in', 'the', 'circumstellar', 'components', 'of', 'ca', 'ii', 'hk', 'in', 'three', 'stars', 'hd58011', 'hd117357', 'and', 'hd181615', 'hinting', 'at', 'a', 'probable', 'presence', 'of', 'magnetic', 'fields', 'in', 'the', 'circumstellar', 'mass', 'loss', 'disks', 'of', 'these', 'stars', 'we', 'emphasize', 'the', 'need', 'for', 'future', 'spectropolarimetric', 'observations', 'of', 'be', 'stars', 'with', 'detected', 'magnetic', 'fields', 'to', 'study', 'the', 'temporal', 'evolution', 'of', 'their', 'magnetic', 'fields', 'and', 'the', 'correlation', 'of', 'magnetic', 'field', 'properties', 'with', 'dynamical', 'phenomena', 'taking', 'place', 'in', 'the', 'gaseous', 'circumstellar', 'disks', 'of', 'these', 'stars']] | [-0.15020833425268604, 0.16823400065754734, -0.04885338990502721, 0.05210434935419385, -0.09687201343146125, -0.042962390676653285, 0.027221594115349978, 0.4190601161295361, -0.184556876885093, -0.35213378110084925, 0.08192430930997427, -0.2638371138662629, -0.06908031196757798, 0.18665063040146396, 0.006496673885225897, -0.04092961372036112, 0.10938265831375042, -0.032925083099440096, -0.03608568610668943, -0.25534184689815403, 0.344122734549042, 0.04506053237696371, 0.15874248348485084, -0.017641645426360462, 0.05945348603300993, -0.08727865886720194, -0.05637930051186645, 0.013056633174942928, -0.09704341734964442, 0.030825818784138155, 0.22707730880387392, 0.11616548820475898, 0.19900323550310536, -0.40489903474742367, -0.1797422246908295, 0.06284298164185864, 0.1252428030487723, 0.04316786584615178, -0.06409154277978212, -0.2888147165625461, 0.07237733689862849, -0.11205287154808023, -0.19011103116615108, 0.012406924091962843, 0.018279909889886058, 0.04710483986377363, -0.2711660249018215, 0.0388008169981392, 0.05089599371060437, 0.16115792954241384, -0.13824607139265926, -0.10801490549943217, -0.054946375527893075, 0.10946361815071935, 0.058015811072453065, 0.0456185624907179, 0.10010148247307134, -0.16537741844448642, -0.05325411564013342, 0.3505296531800159, -0.11253192873751557, -0.013857401064293976, 0.2060219525440855, -0.26459668247448004, -0.18826335592170593, 0.12139440517453752, 0.19290349724807243, 0.14772949994337806, -0.16200826756281436, 0.020796909728900324, -0.004872890630152804, 0.1684201928186258, 0.04014148052296871, 0.09859102498739958, 0.3303587043426446, 0.13407434093815512, -0.02151172000926178, 0.11694279307301139, -0.2715128910281425, -0.04951660112324915, -0.24327796719246406, -0.15911492708100547, -0.1162234433463736, 0.04348267157041652, -0.10714100052703505, -0.13883142575026441, 0.37692373552905206, 0.15711340377074198, 0.15533488814184476, -0.03453093218705314, 0.28195208225112695, 0.05765961024416996, 0.11799240965649661, 0.0948942490142478, 0.3447201475721492, 0.20531329406237991, 0.17594549135916684, -0.26297162702450383, 0.043758600636126375, -0.025258382837447895] |
711.2086 | Numerical solutions to lattice-refined models in loop quantum cosmology | In this article, we develop an intuitive and efficient, numerical technique
to solve the quantum evolution equation of generic lattice-refined models in
loop quantum cosmology. As an application of this method, we extensively study
the solutions of the recently introduced, lattice-refined anisotropic model of
the Schwarzschild interior geometry. Our calculations suggest that the results
obtained from the approach are accurate, robust and are in complete agreement
with the expectations from the von Neumann stability analysis of the model.
| gr-qc | in this article we develop an intuitive and efficient numerical technique to solve the quantum evolution equation of generic latticerefined models in loop quantum cosmology as an application of this method we extensively study the solutions of the recently introduced latticerefined anisotropic model of the schwarzschild interior geometry our calculations suggest that the results obtained from the approach are accurate robust and are in complete agreement with the expectations from the von neumann stability analysis of the model | [['in', 'this', 'article', 'we', 'develop', 'an', 'intuitive', 'and', 'efficient', 'numerical', 'technique', 'to', 'solve', 'the', 'quantum', 'evolution', 'equation', 'of', 'generic', 'latticerefined', 'models', 'in', 'loop', 'quantum', 'cosmology', 'as', 'an', 'application', 'of', 'this', 'method', 'we', 'extensively', 'study', 'the', 'solutions', 'of', 'the', 'recently', 'introduced', 'latticerefined', 'anisotropic', 'model', 'of', 'the', 'schwarzschild', 'interior', 'geometry', 'our', 'calculations', 'suggest', 'that', 'the', 'results', 'obtained', 'from', 'the', 'approach', 'are', 'accurate', 'robust', 'and', 'are', 'in', 'complete', 'agreement', 'with', 'the', 'expectations', 'from', 'the', 'von', 'neumann', 'stability', 'analysis', 'of', 'the', 'model']] | [-0.04315604179954299, 0.022712782882407714, -0.13524263322604105, 0.06581416922227408, -0.03909334986924361, -0.11549278328983256, -0.02389660040036035, 0.3311679686198775, -0.22637788068431502, -0.281057430526767, 0.10517097424673967, -0.26679404409459007, -0.19976515622618488, 0.23027399614548835, -0.055888200525003366, 0.10170158714008255, 0.0955461580067491, 0.02135236461300594, -0.09366932638789503, -0.20985171709878322, 0.33118867019239145, 0.08545778205510803, 0.28665461267034215, 0.028088432868035175, 0.06523838000467573, -0.021549853887289572, -0.042160309212377824, 0.0678069218276785, -0.21679773749173575, 0.16302543917808157, 0.20984074505829015, 0.09487599530854286, 0.24629171975912192, -0.43808176406683064, -0.22776400742049402, 0.04162414817330547, 0.11411842516360757, 0.18359842035585108, -0.08090040494855015, -0.2935235586662132, 0.07812371869938663, -0.20850677721393415, -0.17103669926142082, -0.10497710092040972, -0.037296301315132625, -0.03174200164786994, -0.24863397672724646, 0.11358026587046109, 0.05444122947609195, 0.020081708233752018, -0.12160711753397034, -0.07007808261550963, 0.02583086595404893, 0.09008439073864466, 0.014274337015544565, 0.004439392888273757, 0.04770970252605203, -0.09134185458055864, -0.1423694416343306, 0.3566352929979658, -0.06297635078095855, -0.20058146061208576, 0.1690634306973945, -0.11409961452516608, -0.11246003783666171, 0.06536189096573836, 0.15315921272401914, 0.16594344654526466, -0.15149575877839175, 0.12635076664931452, -0.04754102926474447, 0.11614424775903806, -0.013080552674065798, -0.016096254268258912, 0.1848141101624769, 0.15993810605066708, 0.017959791677406967, 0.14393730140709055, -0.026290341513231397, -0.16658047931746411, -0.32376333698630333, -0.15759608902776678, -0.15130781910668772, 0.03188402296002142, -0.10782157025525334, -0.19587587643987858, 0.38116707409081313, 0.21960986173974398, 0.17281976130862647, 0.030025675092847683, 0.3245043594491644, 0.1277155856219813, -0.01087525095536899, 0.0763173879792866, 0.2583016619945948, 0.17476915491697115, 0.1099756660226446, -0.24975782625066736, 0.0011475993356165977, 0.09450262339594655] |
711.2087 | Query Evaluation and Optimization in the Semantic Web | We address the problem of answering Web ontology queries efficiently. An
ontology is formalized as a Deductive Ontology Base (DOB), a deductive database
that comprises the ontology's inference axioms and facts. A cost-based query
optimization technique for DOB is presented. A hybrid cost model is proposed to
estimate the cost and cardinality of basic and inferred facts. Cardinality and
cost of inferred facts are estimated using an adaptive sampling technique,
while techniques of traditional relational cost models are used for estimating
the cost of basic facts and conjunctive ontology queries. Finally, we implement
a dynamic-programming optimization algorithm to identify query evaluation plans
that minimize the number of intermediate inferred facts. We modeled a subset of
the Web ontology language OWL Lite as a DOB, and performed an experimental
study to analyze the predictive capacity of our cost model and the benefits of
the query optimization technique. Our study has been conducted over synthetic
and real-world OWL ontologies, and shows that the techniques are accurate and
improve query performance. To appear in Theory and Practice of Logic
Programming (TPLP).
| cs.DB cs.LO | we address the problem of answering web ontology queries efficiently an ontology is formalized as a deductive ontology base dob a deductive database that comprises the ontologys inference axioms and facts a costbased query optimization technique for dob is presented a hybrid cost model is proposed to estimate the cost and cardinality of basic and inferred facts cardinality and cost of inferred facts are estimated using an adaptive sampling technique while techniques of traditional relational cost models are used for estimating the cost of basic facts and conjunctive ontology queries finally we implement a dynamicprogramming optimization algorithm to identify query evaluation plans that minimize the number of intermediate inferred facts we modeled a subset of the web ontology language owl lite as a dob and performed an experimental study to analyze the predictive capacity of our cost model and the benefits of the query optimization technique our study has been conducted over synthetic and realworld owl ontologies and shows that the techniques are accurate and improve query performance to appear in theory and practice of logic programming tplp | [['we', 'address', 'the', 'problem', 'of', 'answering', 'web', 'ontology', 'queries', 'efficiently', 'an', 'ontology', 'is', 'formalized', 'as', 'a', 'deductive', 'ontology', 'base', 'dob', 'a', 'deductive', 'database', 'that', 'comprises', 'the', 'ontologys', 'inference', 'axioms', 'and', 'facts', 'a', 'costbased', 'query', 'optimization', 'technique', 'for', 'dob', 'is', 'presented', 'a', 'hybrid', 'cost', 'model', 'is', 'proposed', 'to', 'estimate', 'the', 'cost', 'and', 'cardinality', 'of', 'basic', 'and', 'inferred', 'facts', 'cardinality', 'and', 'cost', 'of', 'inferred', 'facts', 'are', 'estimated', 'using', 'an', 'adaptive', 'sampling', 'technique', 'while', 'techniques', 'of', 'traditional', 'relational', 'cost', 'models', 'are', 'used', 'for', 'estimating', 'the', 'cost', 'of', 'basic', 'facts', 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711.2088 | Photon-Photon Correlations as a Probe of Vacuum Induced Coherence
Effects | We present new experimental implications of the effects of vacuum induced
coherence on the photon -photon correlation in the pi-polarized fluorescence in
j = 1/2 to j = 1/2 transition. These effects should be thus observable in
measurements of photon statistics in for example Hg and Ba ion traps.
| quant-ph | we present new experimental implications of the effects of vacuum induced coherence on the photon photon correlation in the pipolarized fluorescence in j 12 to j 12 transition these effects should be thus observable in measurements of photon statistics in for example hg and ba ion traps | [['we', 'present', 'new', 'experimental', 'implications', 'of', 'the', 'effects', 'of', 'vacuum', 'induced', 'coherence', 'on', 'the', 'photon', 'photon', 'correlation', 'in', 'the', 'pipolarized', 'fluorescence', 'in', 'j', '12', 'to', 'j', '12', 'transition', 'these', 'effects', 'should', 'be', 'thus', 'observable', 'in', 'measurements', 'of', 'photon', 'statistics', 'in', 'for', 'example', 'hg', 'and', 'ba', 'ion', 'traps']] | [-0.07426721114229332, 0.2767241418242772, -0.03731319876982177, 0.0711748237880145, 0.048556087419707725, -0.12630075224219484, 0.056705343333925025, 0.4039598418043015, -0.17445648616140194, -0.3279624098733543, -0.00012260130507514832, -0.3407851007786837, -0.016613837173010442, 0.1812639147082859, 0.016633302726327105, 0.045427951704155894, 0.017854226693669532, -0.027305423103748484, -0.03870501335551764, -0.15240966920998503, 0.269618960196509, 0.09157748425260503, 0.25755253554683455, 0.14599007547416903, 0.05054422756260697, 0.03170541642689483, -0.03625763724855286, 0.010972821314700265, -0.13800753022920578, 0.08389821487350112, 0.23877985328634052, 0.053065991673142986, 0.1972114204805582, -0.3891787764398342, -0.17075119744193681, 0.09567090939789852, 0.1279967952559286, 0.1482549438790924, -0.07422417046829186, -0.27617362847036503, -0.036333538274815745, -0.1515686428124838, -0.08176427166116365, -0.03099815658432372, 0.07261119704653925, 0.015312120754351007, -0.31022169631212315, 0.10995658359272366, 0.05082535359295125, 0.08433328614510754, -0.020943199571697636, -0.125637747406801, 0.002247801872881803, 0.05275580183939731, -0.030868169970493367, -0.010440167267509598, 0.17109520439098172, -0.13315093898749414, -0.15601286100733908, 0.3523555849777891, -0.13216677149559589, -0.12604948410645445, 0.10894147379997562, -0.25581469721695843, -0.16270798938150735, 0.14544979003357125, 0.14179154556799442, 0.09459609910845757, -0.09386226499175772, 0.039893704655387024, 0.0421514320682655, 0.1475589272181133, 0.057744144660202744, 0.14255470013681878, 0.20080491628973407, 0.10290726428811854, -0.011864734456894245, 0.1195413933084173, -0.17265189266416858, -0.031134432919838643, -0.3161593859500073, -0.18309850467646377, -0.19389671931399943, 0.09062742007935935, -0.03199025975667842, -0.0770334576831219, 0.37636168637966855, 0.1843367940647171, 0.169240377526334, -0.09024367051476494, 0.23045918746712676, 0.09215403092341458, 0.03492269700670496, -0.009153404728846347, 0.3309759947847813, 0.16356895733228388, 0.09310602839600216, -0.2936000812878, 0.00643582177407881, -0.013335446946005872] |
711.2089 | Redshift Limits of BL Lacertae Objects from Optical Spectroscopy | Context: BL Lacertae objects have been the targets for numerous recent
multiwavelength campaigns, continuum spectral variability studies, and
theoretical spectral and variability modeling. A meaningful interpretation of
the results of such studies requires a reliable knowledge of the objects'
redshifts; however, the redshifts for many are still unknown or uncertain.
Aims: Therefore, we hope to determine or constrain the redshifts of six BL Lac
objects with unknown or poorly known redshifts. Methods: Observations were made
of these objects with the MDM 2.4 m Hiltner telescope. Although no spectral
features were detected, and thus no redshifts could be measured, lower redshift
limits were assigned to the objects based on the expected equivalent widths of
absorption features in their host galaxies. Redshifts were also estimated for
some objects by assuming the host galaxies are standard candles and using host
galaxy apparent magnitudes taken from the literature. Results: The commonly
used redshift of $z=0.102$ for 1219+285 is almost certainly wrong, while the
redshifts of the other objects studied remain undetermined.
| astro-ph | context bl lacertae objects have been the targets for numerous recent multiwavelength campaigns continuum spectral variability studies and theoretical spectral and variability modeling a meaningful interpretation of the results of such studies requires a reliable knowledge of the objects redshifts however the redshifts for many are still unknown or uncertain aims therefore we hope to determine or constrain the redshifts of six bl lac objects with unknown or poorly known redshifts methods observations were made of these objects with the mdm 24 m hiltner telescope although no spectral features were detected and thus no redshifts could be measured lower redshift limits were assigned to the objects based on the expected equivalent widths of absorption features in their host galaxies redshifts were also estimated for some objects by assuming the host galaxies are standard candles and using host galaxy apparent magnitudes taken from the literature results the commonly used redshift of z0102 for 1219285 is almost certainly wrong while the redshifts of the other objects studied remain undetermined | [['context', 'bl', 'lacertae', 'objects', 'have', 'been', 'the', 'targets', 'for', 'numerous', 'recent', 'multiwavelength', 'campaigns', 'continuum', 'spectral', 'variability', 'studies', 'and', 'theoretical', 'spectral', 'and', 'variability', 'modeling', 'a', 'meaningful', 'interpretation', 'of', 'the', 'results', 'of', 'such', 'studies', 'requires', 'a', 'reliable', 'knowledge', 'of', 'the', 'objects', 'redshifts', 'however', 'the', 'redshifts', 'for', 'many', 'are', 'still', 'unknown', 'or', 'uncertain', 'aims', 'therefore', 'we', 'hope', 'to', 'determine', 'or', 'constrain', 'the', 'redshifts', 'of', 'six', 'bl', 'lac', 'objects', 'with', 'unknown', 'or', 'poorly', 'known', 'redshifts', 'methods', 'observations', 'were', 'made', 'of', 'these', 'objects', 'with', 'the', 'mdm', '24', 'm', 'hiltner', 'telescope', 'although', 'no', 'spectral', 'features', 'were', 'detected', 'and', 'thus', 'no', 'redshifts', 'could', 'be', 'measured', 'lower', 'redshift', 'limits', 'were', 'assigned', 'to', 'the', 'objects', 'based', 'on', 'the', 'expected', 'equivalent', 'widths', 'of', 'absorption', 'features', 'in', 'their', 'host', 'galaxies', 'redshifts', 'were', 'also', 'estimated', 'for', 'some', 'objects', 'by', 'assuming', 'the', 'host', 'galaxies', 'are', 'standard', 'candles', 'and', 'using', 'host', 'galaxy', 'apparent', 'magnitudes', 'taken', 'from', 'the', 'literature', 'results', 'the', 'commonly', 'used', 'redshift', 'of', 'z0102', 'for', '1219285', 'is', 'almost', 'certainly', 'wrong', 'while', 'the', 'redshifts', 'of', 'the', 'other', 'objects', 'studied', 'remain', 'undetermined']] | [-0.03177686473242489, 0.0869934215401131, -0.056597566462110685, 0.1533422327259589, -0.15918754846284008, -0.13169127665123487, 0.048874773525531934, 0.5015793990747757, -0.10713944077794721, -0.39450944116597164, 0.11776515890995647, -0.2851741685565696, -0.01901788431000952, 0.2231248611842383, -0.060712453068713715, 0.047372413817400406, 0.06221975882029924, -0.061811742529901396, -0.010025917309587429, -0.28222428449339804, 0.2781315376524146, 0.07679471309178969, 0.18683734223392445, -0.06523925673317568, 0.0809949453280543, -0.09111985932833638, -0.1682923020541118, 0.008287424749010298, -0.13513525303155857, 0.0674751829036865, 0.2858950548275116, 0.13042305068937635, 0.20547692175023258, -0.3075480955815594, -0.24184380086641674, 0.11086254851704642, 0.17269597929924815, 0.0631629665079246, -0.035794184768308764, -0.31773613598085493, 0.07914060594830297, -0.1097649567387437, -0.14096575042973442, 0.02385198087319283, 0.039312600985685564, 0.032262773045439674, -0.16480055300473986, 0.11964814374289974, 0.00700057114766215, 0.11117744696023593, -0.14193902309866152, -0.1638943584388997, -0.05570320405854271, 0.15390079003528703, 0.061867265599493654, 0.004425498842070979, 0.12230203246013317, -0.16747892984604262, -0.09284946339272232, 0.43283584151776083, -0.001446744721629713, -0.035632914981344736, 0.2524988064219816, -0.16619663380636238, -0.21831213693269136, 0.12966369123882557, 0.1387210778516145, 0.1403398060573669, -0.20085379413149532, 0.029960954462245375, -0.005205096003700452, 0.23413928147091204, 0.016242032351690423, 0.12730420676786916, 0.3078144429004695, 0.06412399189717821, -0.025888518507785938, 0.031011682894734487, -0.20160954884752766, 0.046829881448107936, -0.22661184098190032, -0.07190338449821954, -0.15859337527541925, 0.08063331868286323, -0.08503047086358777, -0.10045423400195608, 0.35798263552609877, 0.14230551924107662, 0.23420784799788844, 0.09129188655095781, 0.285215025574126, 0.05909271359286574, 0.12328785711041013, 0.061421401734205794, 0.37288887643185864, 0.11496301297889461, 0.05404996941376657, -0.12313344201538712, 0.1097336025405058, -0.011856354902083257] |
711.209 | Dynamics of charged dust particles in protoplanetary discs | We study the effect of an imposed magnetic field on the motion of charged
dust particles in magnetically active regions of a protoplanetary disc.
Assuming a power law structure for the vertical and the toroidal components of
the magnetic field for the regions beyond magnetically dead region of the disc,
the radial and the vertical velocities of the charged particles, in the
asymptotic case of small particles, are calculated analytically. While grains
with radii smaller than a critical radius significantly are affected by the
magnetic force, motion of the particles with larger radii is independent of the
magnetic field. The critical radius depends on the magnetic geometry and the
charge of the grains. Assuming that a grain particle has one elementary charge
and the physical properties of the disc correspond to a minimum-mass solar
nebula, we show that only micron-sized grains are affected by the magnetic
force. Also, charge polarity determines direction of the radial velocity. For
such small particles, both the radial and the vertical velocities increase due
to the magnetic force.
| astro-ph | we study the effect of an imposed magnetic field on the motion of charged dust particles in magnetically active regions of a protoplanetary disc assuming a power law structure for the vertical and the toroidal components of the magnetic field for the regions beyond magnetically dead region of the disc the radial and the vertical velocities of the charged particles in the asymptotic case of small particles are calculated analytically while grains with radii smaller than a critical radius significantly are affected by the magnetic force motion of the particles with larger radii is independent of the magnetic field the critical radius depends on the magnetic geometry and the charge of the grains assuming that a grain particle has one elementary charge and the physical properties of the disc correspond to a minimummass solar nebula we show that only micronsized grains are affected by the magnetic force also charge polarity determines direction of the radial velocity for such small particles both the radial and the vertical velocities increase due to the magnetic force | [['we', 'study', 'the', 'effect', 'of', 'an', 'imposed', 'magnetic', 'field', 'on', 'the', 'motion', 'of', 'charged', 'dust', 'particles', 'in', 'magnetically', 'active', 'regions', 'of', 'a', 'protoplanetary', 'disc', 'assuming', 'a', 'power', 'law', 'structure', 'for', 'the', 'vertical', 'and', 'the', 'toroidal', 'components', 'of', 'the', 'magnetic', 'field', 'for', 'the', 'regions', 'beyond', 'magnetically', 'dead', 'region', 'of', 'the', 'disc', 'the', 'radial', 'and', 'the', 'vertical', 'velocities', 'of', 'the', 'charged', 'particles', 'in', 'the', 'asymptotic', 'case', 'of', 'small', 'particles', 'are', 'calculated', 'analytically', 'while', 'grains', 'with', 'radii', 'smaller', 'than', 'a', 'critical', 'radius', 'significantly', 'are', 'affected', 'by', 'the', 'magnetic', 'force', 'motion', 'of', 'the', 'particles', 'with', 'larger', 'radii', 'is', 'independent', 'of', 'the', 'magnetic', 'field', 'the', 'critical', 'radius', 'depends', 'on', 'the', 'magnetic', 'geometry', 'and', 'the', 'charge', 'of', 'the', 'grains', 'assuming', 'that', 'a', 'grain', 'particle', 'has', 'one', 'elementary', 'charge', 'and', 'the', 'physical', 'properties', 'of', 'the', 'disc', 'correspond', 'to', 'a', 'minimummass', 'solar', 'nebula', 'we', 'show', 'that', 'only', 'micronsized', 'grains', 'are', 'affected', 'by', 'the', 'magnetic', 'force', 'also', 'charge', 'polarity', 'determines', 'direction', 'of', 'the', 'radial', 'velocity', 'for', 'such', 'small', 'particles', 'both', 'the', 'radial', 'and', 'the', 'vertical', 'velocities', 'increase', 'due', 'to', 'the', 'magnetic', 'force']] | [-0.1467585750866272, 0.24173954073576906, -0.020701791245942517, 0.017178198207584292, -0.025617265508569388, -0.028430376345873136, -0.021724150580693186, 0.3407437894170339, -0.22682772619337532, -0.33498618628485183, 0.02656435270556868, -0.2481583614363954, -0.0208469550209416, 0.17737419945605076, -0.0015086140202673292, -0.008183226250435058, -0.006872004183343035, 0.015623474749332735, -0.013158519771165413, -0.16068507289390127, 0.33040053290557225, 0.06200335835876492, 0.19773325891465465, 0.056594644283210975, 0.06583707916114286, -0.04833128133175001, 0.009166402863392424, 0.09333941106269987, -0.17806264339056946, 0.07045556889642353, 0.06681355978819849, -0.019304763688276876, 0.20067228297056963, -0.47923740533562753, -0.19228054782189968, 0.06752163482119324, 0.17972329495248596, 0.08177776145210457, -0.05513719477720365, -0.2391646799935577, 0.07690104857259403, -0.11460240906632016, -0.21848833825805283, 0.029559117456564324, 0.08452131917412162, 0.06312867566758788, -0.2893651948647568, 0.1266902234400905, 0.09893634023327876, 0.10298462273456113, -0.14473794677868118, -0.10635838324387122, -0.09017075857987379, 0.09197273126647221, 0.11748572709644062, 0.03132423717727766, 0.30917581897013624, -0.15558595347051332, -0.013938536845965882, 0.38494495957056224, -0.03575567327242283, -0.17510723044848167, 0.17775299372635997, -0.2578529974370333, -0.04708411274316338, 0.19893651880657656, 0.16443291316993233, 0.14031013494682656, -0.1060269429120289, 0.06562504093828907, -0.05337846999842609, 0.15600479154503027, 0.06516255068221274, 0.023710242833274636, 0.33631085973189917, 0.11816991943693747, 0.06568589715405355, 0.11927553453628038, -0.21204926327107787, -0.08816071280488216, -0.24683161979444282, -0.16796909764777826, -0.17442187242952817, 0.005527915712984311, -0.1673567060813021, -0.1791295450519921, 0.3573514812200659, 0.11786904033122725, 0.20277375310142606, -0.02485242815462151, 0.3193881425446685, 0.08161993097040178, 0.12009562586428803, 0.13294372347458078, 0.3396314840583464, 0.18537134646217343, 0.14265187056277573, -0.2807052795993261, 0.05997023179069312, 0.04105582415137031] |
711.2091 | Nuclear burning and mixing in the first stars: entrainment at a
convective boundary using the PPB advection scheme | The evolution of the first generations of stars at zero or extremly low
metallicity, and especially some crucial properties like the primary N14
production, is charactarized by convective-reactive mixing events that are
mostly absent from similar evolution phases at solar-like metallicity. These
episodes occur when unprocessed H-rich material is mixed accross a convective
boundary into C12 rich He-burning material, as for example in He-shell flashes
of extremely-low metallicity AGB stars. In this paper we describe the
astrophysical context of such convective-reactive events, including the
difficulty of current one-dimensional stellar evolution models to correctly
simulate these evolutionary phases. We then describe the requirements and
current state of modeling convective-reactive processes in the first stars
environment. We demonstrate some of the new concepts that we are applying to
this problem, i.e. the highly accurate PPB advection scheme in the framework of
PPM hydrodynamic simulations of mixing accross a very stiff convective
boundary. We show initial results of such simulations that address the first
non-reactive step of this problem, which is the entrainment of H at the top
boundary of the He-shell flash convection zone.
| astro-ph | the evolution of the first generations of stars at zero or extremly low metallicity and especially some crucial properties like the primary n14 production is charactarized by convectivereactive mixing events that are mostly absent from similar evolution phases at solarlike metallicity these episodes occur when unprocessed hrich material is mixed accross a convective boundary into c12 rich heburning material as for example in heshell flashes of extremelylow metallicity agb stars in this paper we describe the astrophysical context of such convectivereactive events including the difficulty of current onedimensional stellar evolution models to correctly simulate these evolutionary phases we then describe the requirements and current state of modeling convectivereactive processes in the first stars environment we demonstrate some of the new concepts that we are applying to this problem ie the highly accurate ppb advection scheme in the framework of ppm hydrodynamic simulations of mixing accross a very stiff convective boundary we show initial results of such simulations that address the first nonreactive step of this problem which is the entrainment of h at the top boundary of the heshell flash convection zone | [['the', 'evolution', 'of', 'the', 'first', 'generations', 'of', 'stars', 'at', 'zero', 'or', 'extremly', 'low', 'metallicity', 'and', 'especially', 'some', 'crucial', 'properties', 'like', 'the', 'primary', 'n14', 'production', 'is', 'charactarized', 'by', 'convectivereactive', 'mixing', 'events', 'that', 'are', 'mostly', 'absent', 'from', 'similar', 'evolution', 'phases', 'at', 'solarlike', 'metallicity', 'these', 'episodes', 'occur', 'when', 'unprocessed', 'hrich', 'material', 'is', 'mixed', 'accross', 'a', 'convective', 'boundary', 'into', 'c12', 'rich', 'heburning', 'material', 'as', 'for', 'example', 'in', 'heshell', 'flashes', 'of', 'extremelylow', 'metallicity', 'agb', 'stars', 'in', 'this', 'paper', 'we', 'describe', 'the', 'astrophysical', 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711.2092 | On the 1-density of Unit Ball Covering | Motivated by modern applications like image processing and wireless sensor
networks, we consider a variation of the famous Kepler Conjecture. Given any
infinite set of unit balls covering the whole space, we want to know the
optimal (lim sup) density of the volume which is covered by exactly one ball
(i.e., the maximum such density over all unit ball covers, called the {\em
optimal 1-density} and denoted as $\delta_d$, where $d$ is the dimension of the
Euclidean space). We prove that in 2D the optimal 1-density
$\delta_2=(3\sqrt(3)-\pi)/\pi \approx 0.6539$, which is achieved through a
regular hexagonal covering. In 3D, the problem is widely open and we present a
Dodecehadral Cover Conjecture which states that the optimal 1-density in 3D,
$\delta_3$, is bounded from above by the 1-density of a unit ball whose Voronoi
polyhedron is a regular dodecahedron of circum-radius one (determined by 12
extra unit balls). We show numerically that this 1-density $\delta_3(dc)\approx
0.315$.
| math.GM | motivated by modern applications like image processing and wireless sensor networks we consider a variation of the famous kepler conjecture given any infinite set of unit balls covering the whole space we want to know the optimal lim sup density of the volume which is covered by exactly one ball ie the maximum such density over all unit ball covers called the em optimal 1density and denoted as delta_d where d is the dimension of the euclidean space we prove that in 2d the optimal 1density delta_23sqrt3pipi approx 06539 which is achieved through a regular hexagonal covering in 3d the problem is widely open and we present a dodecehadral cover conjecture which states that the optimal 1density in 3d delta_3 is bounded from above by the 1density of a unit ball whose voronoi polyhedron is a regular dodecahedron of circumradius one determined by 12 extra unit balls we show numerically that this 1density delta_3dcapprox 0315 | [['motivated', 'by', 'modern', 'applications', 'like', 'image', 'processing', 'and', 'wireless', 'sensor', 'networks', 'we', 'consider', 'a', 'variation', 'of', 'the', 'famous', 'kepler', 'conjecture', 'given', 'any', 'infinite', 'set', 'of', 'unit', 'balls', 'covering', 'the', 'whole', 'space', 'we', 'want', 'to', 'know', 'the', 'optimal', 'lim', 'sup', 'density', 'of', 'the', 'volume', 'which', 'is', 'covered', 'by', 'exactly', 'one', 'ball', 'ie', 'the', 'maximum', 'such', 'density', 'over', 'all', 'unit', 'ball', 'covers', 'called', 'the', 'em', 'optimal', '1density', 'and', 'denoted', 'as', 'delta_d', 'where', 'd', 'is', 'the', 'dimension', 'of', 'the', 'euclidean', 'space', 'we', 'prove', 'that', 'in', '2d', 'the', 'optimal', '1density', 'delta_23sqrt3pipi', 'approx', '06539', 'which', 'is', 'achieved', 'through', 'a', 'regular', 'hexagonal', 'covering', 'in', '3d', 'the', 'problem', 'is', 'widely', 'open', 'and', 'we', 'present', 'a', 'dodecehadral', 'cover', 'conjecture', 'which', 'states', 'that', 'the', 'optimal', '1density', 'in', '3d', 'delta_3', 'is', 'bounded', 'from', 'above', 'by', 'the', '1density', 'of', 'a', 'unit', 'ball', 'whose', 'voronoi', 'polyhedron', 'is', 'a', 'regular', 'dodecahedron', 'of', 'circumradius', 'one', 'determined', 'by', '12', 'extra', 'unit', 'balls', 'we', 'show', 'numerically', 'that', 'this', '1density', 'delta_3dcapprox', '0315']] | [-0.1321269895153626, 0.11115109961825294, -0.0050849974331205455, 0.04229254063777009, -0.03563160464377297, -0.12138553970610562, 0.05425219858506238, 0.34675172734882265, -0.3009008424208555, -0.24456203679572666, 0.15841618275334626, -0.29871141313211313, -0.14480749692148004, 0.16163802328241977, -0.12945467975863337, 0.0745853489466838, 0.030159627792073894, 0.07968535685344347, -0.043779028319007415, -0.2761651686691858, 0.3021506041454904, -0.024392815571993787, 0.22476305487559528, 0.04168344497070062, 0.1387628342010719, 0.04183648155989828, 0.026348286015382468, 0.05580668205924221, -0.21606312947272013, 0.14077692617090196, 0.22693548248525683, 0.1398301428455292, 0.2653883381265629, -0.34861508295840477, -0.2119635716419889, 0.1445687594869797, 0.14861272730855332, -0.01774118374030889, -0.009898088534751178, -0.20572027475850668, 0.11416866780036677, -0.09081724435337726, -0.13100241651043099, 0.02440874003620189, 0.06342101860976476, 0.01745107020744869, -0.27889206261676275, 0.03012674827659071, 0.060235282162586785, 0.03391195579149779, -0.06776946778131636, -0.11030959775239624, -0.018921728301423274, 0.10377830828444427, -0.055167345645442754, 0.11894035251157371, 0.09677578211262428, -0.055472721597056414, -0.0827185465485499, 0.39941132886162556, -0.02418071992497965, -0.2121170219255608, 0.07461706266140207, -0.19524349825031168, -0.11058488404008233, 0.12371207301239699, 0.12279615304987902, 0.13057891654917686, -0.08208613283431083, 0.17530140243601733, -0.14208626947041897, 0.14708792538742924, 0.1441070863866056, -0.0057764894125477365, 0.16198170536647963, 0.1597934167443571, 0.15434568609104843, 0.17607518463412497, -0.0875673512943607, -0.07690903434332534, -0.3034568268077954, -0.15323783144576858, -0.27540488112548256, 0.07909259805147419, -0.1180163568094109, -0.1842567401950476, 0.3361922690077432, 0.05464217974650149, 0.22949080540496386, 0.05725585218651578, 0.24760428657570224, 0.05041420370787891, 0.06844303822638281, 0.13690328422243034, 0.1656937442337539, 0.08130782681042391, 0.04227348629752211, -0.14658433427133702, -0.019458281061309854, 0.12153753617172058] |
711.2093 | Metric sparsification and operator norm localization | We study an operator norm localization property and its applications to the
coarse Novikov conjecture in operator K-theory. A metric space X is said to
have operator norm localization property if there exists a positive number c
such that for every r>0, there is R>0 for which, if m is a positive locally
finite Borel measure on X, H is a separable infinite dimensional Hilbert space
and T is a bounded linear operator acting on L^2(X,m) with propagation r, then
there exists an unit vector v satisfying with support of diameter at most R and
such that |Tv| is larger or equal than c|T|. If X has finite asymptotic
dimension, then X has operator norm localization property. In this paper, we
introduce a sufficient geometric condition for the operator norm localization
property. This is used to give many examples of finitely generated groups with
infinite asymptotic dimension and the operator norm localization property. We
also show that any sequence of expanding graphs does not possess the operator
norm localization property.
| math.MG math.KT | we study an operator norm localization property and its applications to the coarse novikov conjecture in operator ktheory a metric space x is said to have operator norm localization property if there exists a positive number c such that for every r0 there is r0 for which if m is a positive locally finite borel measure on x h is a separable infinite dimensional hilbert space and t is a bounded linear operator acting on l2xm with propagation r then there exists an unit vector v satisfying with support of diameter at most r and such that tv is larger or equal than ct if x has finite asymptotic dimension then x has operator norm localization property in this paper we introduce a sufficient geometric condition for the operator norm localization property this is used to give many examples of finitely generated groups with infinite asymptotic dimension and the operator norm localization property we also show that any sequence of expanding graphs does not possess the operator norm localization property | [['we', 'study', 'an', 'operator', 'norm', 'localization', 'property', 'and', 'its', 'applications', 'to', 'the', 'coarse', 'novikov', 'conjecture', 'in', 'operator', 'ktheory', 'a', 'metric', 'space', 'x', 'is', 'said', 'to', 'have', 'operator', 'norm', 'localization', 'property', 'if', 'there', 'exists', 'a', 'positive', 'number', 'c', 'such', 'that', 'for', 'every', 'r0', 'there', 'is', 'r0', 'for', 'which', 'if', 'm', 'is', 'a', 'positive', 'locally', 'finite', 'borel', 'measure', 'on', 'x', 'h', 'is', 'a', 'separable', 'infinite', 'dimensional', 'hilbert', 'space', 'and', 't', 'is', 'a', 'bounded', 'linear', 'operator', 'acting', 'on', 'l2xm', 'with', 'propagation', 'r', 'then', 'there', 'exists', 'an', 'unit', 'vector', 'v', 'satisfying', 'with', 'support', 'of', 'diameter', 'at', 'most', 'r', 'and', 'such', 'that', 'tv', 'is', 'larger', 'or', 'equal', 'than', 'ct', 'if', 'x', 'has', 'finite', 'asymptotic', 'dimension', 'then', 'x', 'has', 'operator', 'norm', 'localization', 'property', 'in', 'this', 'paper', 'we', 'introduce', 'a', 'sufficient', 'geometric', 'condition', 'for', 'the', 'operator', 'norm', 'localization', 'property', 'this', 'is', 'used', 'to', 'give', 'many', 'examples', 'of', 'finitely', 'generated', 'groups', 'with', 'infinite', 'asymptotic', 'dimension', 'and', 'the', 'operator', 'norm', 'localization', 'property', 'we', 'also', 'show', 'that', 'any', 'sequence', 'of', 'expanding', 'graphs', 'does', 'not', 'possess', 'the', 'operator', 'norm', 'localization', 'property']] | [-0.14996001914362697, 0.14712108551706052, -0.08219823580721448, 0.047183341144666296, -0.06796208083739176, -0.18762621643186053, -0.045624725768506964, 0.4148500034695162, -0.32405497476472245, -0.11793468453757026, 0.13726700937841088, -0.30858517011305703, -0.14469299364205013, 0.1490372493287877, -0.10948434935006149, 0.024055360280566245, 0.07697951068882557, 0.17382333024459726, -0.10451411091866356, -0.24590636988937417, 0.3694937401670305, -0.03540310220902457, 0.20524931324728052, 0.11125099604387823, 0.1636907172950861, 0.007442521146389053, 0.0460941077223705, 0.04777790169224746, -0.1431752454591761, 0.08542870467747836, 0.25367769135901813, 0.15016866770901663, 0.32912449905758395, -0.31995217681995947, -0.18854407184236846, 0.2755417311564088, 0.12308951671344831, -0.04096101300939849, -0.06170643658568973, -0.24699209373553885, 0.18939687282066134, -0.1436739505672663, -0.15167179258458097, -0.07590519686174743, 0.13140531581662157, -0.04636776125989854, -0.3306097704835017, 0.02021749861904776, 0.1308420318617102, 0.09495062023154734, -0.07179624289479654, -0.05659915814997957, -0.051005746150279745, 0.07784569848547963, 0.0006331314017777057, 0.10308648934313917, 0.046400283375302984, -0.024292551751311883, -0.07377807517289459, 0.3304479513152995, -0.05906963613961125, -0.2847819252706626, 0.16002972181338598, -0.19606303869633634, -0.10893606809652684, 0.07979308933923569, 0.08116178101147799, 0.14772689546841908, -0.03152526350253645, 0.2594178375171717, -0.12524709614158114, 0.17090754628263632, 0.06791889136657119, 0.08743601310587323, 0.049631483050282386, 0.08355191926855375, 0.22118168035076985, 0.09587061533375699, -0.007090307684505687, 0.007700394055641749, -0.3518643349299536, -0.16643792220993953, -0.22320828597088727, 0.1432262856801732, -0.12438368320923901, -0.23609655557665973, 0.336898647517185, 0.07867621079409111, 0.1984492752920179, 0.08665925222654443, 0.23132566837456953, 0.1398219931196175, 0.06493942459415206, 0.1162726727204726, 0.10038259785677142, 0.17351397071581554, 0.012451157543589088, -0.13875356790308346, 0.02920301078873522, 0.22972620829746387] |
711.2094 | Nonlinear optical spectroscopy of single, few, and many molecules;
nonequilibrium Green's function QED approach | Nonlinear optical signals from an assembly of N noninteracting particles
consist of an incoherent and a coherent component, whose magnitudes scale \sim
N and \sim N(N-1), respectively. A unified microscopic description of both
types of signals is developed using a quantum electrodynamical (QED) treatment
of the optical fields. Closed nonequilibrium Green's function expressions are
derived that incorporate both stimulated and spontaneous processes. General
(n+1)-wave mixing experiments are discussed as an example of spontaneously
generated signals. When performed on a single particle, such signals cannot be
expressed in terms of the nth order polarization, as predicted by the
semiclassical theory. Stimulated processes are shown to be purely incoherent in
nature. Within the QED framework, heterodyne-detected wave mixing signals are
simply viewed as incoherent stimulated emission, whereas homodyne signals are
generated by coherent spontaneous emission.
| quant-ph | nonlinear optical signals from an assembly of n noninteracting particles consist of an incoherent and a coherent component whose magnitudes scale sim n and sim nn1 respectively a unified microscopic description of both types of signals is developed using a quantum electrodynamical qed treatment of the optical fields closed nonequilibrium greens function expressions are derived that incorporate both stimulated and spontaneous processes general n1wave mixing experiments are discussed as an example of spontaneously generated signals when performed on a single particle such signals cannot be expressed in terms of the nth order polarization as predicted by the semiclassical theory stimulated processes are shown to be purely incoherent in nature within the qed framework heterodynedetected wave mixing signals are simply viewed as incoherent stimulated emission whereas homodyne signals are generated by coherent spontaneous emission | [['nonlinear', 'optical', 'signals', 'from', 'an', 'assembly', 'of', 'n', 'noninteracting', 'particles', 'consist', 'of', 'an', 'incoherent', 'and', 'a', 'coherent', 'component', 'whose', 'magnitudes', 'scale', 'sim', 'n', 'and', 'sim', 'nn1', 'respectively', 'a', 'unified', 'microscopic', 'description', 'of', 'both', 'types', 'of', 'signals', 'is', 'developed', 'using', 'a', 'quantum', 'electrodynamical', 'qed', 'treatment', 'of', 'the', 'optical', 'fields', 'closed', 'nonequilibrium', 'greens', 'function', 'expressions', 'are', 'derived', 'that', 'incorporate', 'both', 'stimulated', 'and', 'spontaneous', 'processes', 'general', 'n1wave', 'mixing', 'experiments', 'are', 'discussed', 'as', 'an', 'example', 'of', 'spontaneously', 'generated', 'signals', 'when', 'performed', 'on', 'a', 'single', 'particle', 'such', 'signals', 'can', 'not', 'be', 'expressed', 'in', 'terms', 'of', 'the', 'nth', 'order', 'polarization', 'as', 'predicted', 'by', 'the', 'semiclassical', 'theory', 'stimulated', 'processes', 'are', 'shown', 'to', 'be', 'purely', 'incoherent', 'in', 'nature', 'within', 'the', 'qed', 'framework', 'heterodynedetected', 'wave', 'mixing', 'signals', 'are', 'simply', 'viewed', 'as', 'incoherent', 'stimulated', 'emission', 'whereas', 'homodyne', 'signals', 'are', 'generated', 'by', 'coherent', 'spontaneous', 'emission']] | [-0.1193742618171512, 0.24715321420449954, -0.04552166962843222, 0.07513357144207068, -0.013541536548161018, -0.11638598136582982, -0.012689228185257917, 0.36273222836429503, -0.2605236330132153, -0.24164818772531824, 0.0499262565255179, -0.28931751233567277, -0.13556862349705354, 0.22304393280620702, 0.05365222621076643, 0.026307240799208407, -0.01059285248803503, -0.006060619199120287, -0.0020499451784417033, -0.1181023063332732, 0.2413352740487195, 0.015084970182106732, 0.2868513610707457, 0.011363212159946005, 0.10548063745694373, 0.026055087366683494, -0.02642912465606385, -0.018279119201852427, -0.02956668097629436, 0.03458335326720419, 0.2691989066409392, 0.08509819567161821, 0.18470942211657096, -0.49314835924766404, -0.248372030805852, 0.09750763415845472, 0.16528537249802472, 0.12269161361853467, -0.05572687391688658, -0.3522029022491579, 0.0123592146199697, -0.15282364296461906, -0.1018325395729226, -0.07496679203807195, -0.004710960768357809, 0.00660649453873621, -0.30576005874118256, 0.10663334833833375, 0.057047260519457674, 0.04209415176744336, -0.026712003462850603, -0.06056336292548717, -0.01101812190000913, 0.08540630528686825, -0.0005949129578101434, 0.005223507571569297, 0.18029783317235423, -0.132932084329329, -0.18174561717783783, 0.39716816654623444, -0.10955058450814087, -0.17118650445464387, 0.14991538366129092, -0.14326374487145177, -0.04780757484554466, 0.20642937373008524, 0.15957932675573558, 0.15112331706627424, -0.18947278040536392, 0.058340591802904664, -0.001577654919381177, 0.16805861354892407, 0.07621097845136564, 0.11054454730179009, 0.2261667691324073, 0.11962723511153026, -0.04552285484761111, 0.12450868099990453, -0.051839344563143354, -0.10667537605570657, -0.33840453202936993, -0.06997065328290936, -0.1964408778098982, 0.10250111842578374, -0.04640716490817496, -0.14280377998457242, 0.3741375230767055, 0.07694393091612677, 0.17597833965251694, 0.009830283616155164, 0.3043174537545098, 0.19950024934864338, 0.03592597656890249, 0.0006093307617189947, 0.25961998301738903, 0.1879194997383087, 0.010693011289365145, -0.21370489131346512, 0.014057327524077758, 0.024126039103799457] |
711.2095 | An observation of a mutual event between two satellites of Uranus | We present observations of the occultation of Umbriel by Oberon on 4 May,
2007. We believe this is the first observed mutual event between satellites of
Uranus. Fitting a simple geometric model to the lightcurve, we measure the
mid-event time with a precision of 4 seconds. We assume previously measured
values for the albedos of the two satellites (Karkoschka 2001), and measure the
impact parameter to be 500 +/- 80 km. These measurements are more precise than
estimates based on current ephemerides for these satellites. Therefore
observations of additional mutual events during the 2007-2008 Uranian equinox
will provide improved estimates of their orbital and physical parameters.
| astro-ph | we present observations of the occultation of umbriel by oberon on 4 may 2007 we believe this is the first observed mutual event between satellites of uranus fitting a simple geometric model to the lightcurve we measure the midevent time with a precision of 4 seconds we assume previously measured values for the albedos of the two satellites karkoschka 2001 and measure the impact parameter to be 500 80 km these measurements are more precise than estimates based on current ephemerides for these satellites therefore observations of additional mutual events during the 20072008 uranian equinox will provide improved estimates of their orbital and physical parameters | [['we', 'present', 'observations', 'of', 'the', 'occultation', 'of', 'umbriel', 'by', 'oberon', 'on', '4', 'may', '2007', 'we', 'believe', 'this', 'is', 'the', 'first', 'observed', 'mutual', 'event', 'between', 'satellites', 'of', 'uranus', 'fitting', 'a', 'simple', 'geometric', 'model', 'to', 'the', 'lightcurve', 'we', 'measure', 'the', 'midevent', 'time', 'with', 'a', 'precision', 'of', '4', 'seconds', 'we', 'assume', 'previously', 'measured', 'values', 'for', 'the', 'albedos', 'of', 'the', 'two', 'satellites', 'karkoschka', '2001', 'and', 'measure', 'the', 'impact', 'parameter', 'to', 'be', '500', '80', 'km', 'these', 'measurements', 'are', 'more', 'precise', 'than', 'estimates', 'based', 'on', 'current', 'ephemerides', 'for', 'these', 'satellites', 'therefore', 'observations', 'of', 'additional', 'mutual', 'events', 'during', 'the', '20072008', 'uranian', 'equinox', 'will', 'provide', 'improved', 'estimates', 'of', 'their', 'orbital', 'and', 'physical', 'parameters']] | [-0.11614015145348205, 0.12698569525113831, -0.11492452202723004, 0.08725764273325555, -0.09185519928555899, -0.06065505368706699, 0.0738766487092317, 0.38929224252485883, -0.16418739525565448, -0.42028043576731133, 0.15356096525479537, -0.296242315778867, -0.08271106517014022, 0.24077521662380044, -0.11729215616539407, 0.034053365004953005, 0.13660576137212607, -0.02650848928533378, -0.08145453342093298, -0.26059641742792267, 0.21301657718140632, 0.10548382637073071, 0.11969340471506047, 3.207172826828005e-05, 0.0926661460320107, -0.013050243059226956, -0.08633561400795141, -0.0520938635767939, -0.21920794531559715, 0.11747169157919976, 0.17068235508738255, 0.12752921869441008, 0.160560380658493, -0.40964602534950245, -0.17625416829161203, 0.08279302581034315, 0.07620513977375455, 0.04052703114323846, 0.020636908400354932, -0.3064612866862892, 0.037712513451249555, -0.193125647931503, -0.13991698476288897, -0.005218589651541641, 0.10406216193671124, 0.01378334246468372, -0.26562969471650344, 0.10162639837094153, 0.025035494300447263, 0.1423415872156441, -0.11782195209077774, -0.1470328758094603, -0.0395693034470941, 0.09993052797821853, 0.03109821017638891, -0.016016509472907413, 0.12397147365370004, -0.020693692277955752, -0.09326667174732742, 0.34668093909007996, -0.06619586625381019, -0.06444238353735553, 0.18763672036808343, -0.2186905705423739, -0.1303419926105282, 0.11372565643306679, 0.17738193941141406, 0.06702998644099213, -0.16805535848610675, -0.046773332857320875, -0.015908210233856853, 0.1871493266752133, 0.0729797693918674, 0.050599483526849114, 0.25826963783205986, 0.11624108228828006, 0.05651406179038951, 0.029948256361351993, -0.2394035903763814, -0.03842155823412423, -0.22902516579219642, -0.11004732017038175, -0.13611143458939085, 0.02588669434995749, -0.1330585233112148, -0.04924024208986129, 0.3953591303344673, 0.19535240897787914, 0.24749030005365896, 0.0660152674827259, 0.30986032330502683, 0.0872968434604655, 0.051914432703947216, 0.06133753394869228, 0.34650544729083776, 0.061124882743640155, 0.09146690901476316, -0.1602692645840132, 0.11445629523726754, 0.007810363467657366] |
711.2096 | Cyclooxygenase Inhibition Limits Blood-Brain Barrier Disruption
following Intracerebral Injection of Tumor Necrosis Factor-alpha in the Rat | Increased permeability of the blood-brain barrier (BBB) is important in
neurological disorders. Neuroinflammation is associated with increased BBB
breakdown and brain injury. Tumor necrosis factor-a (TNF-a) is involved in BBB
injury and edema formation through a mechanism involving matrix
metalloproteinase (MMP) upregulation. There is emerging evidence indicating
that cyclooxygenase (COX) inhibition limits BBB disruption following ischemic
stroke and bacterial meningitis, but the mechanisms involved are not known. We
used intracerebral injection of TNF-a to study the effect of COX inhibition on
TNF-a-induced BBB breakdown, MMP expression/activity and oxidative stress. BBB
disruption was evaluated by the uptake of 14C-sucrose into the brain and by
magnetic resonance imaging (MRI) utilizing Gd-DTPA as a paramagnetic contrast
agent. Using selective inhibitors of each COX isoform, we found that COX-1
activity is more important than COX-2 in BBB opening. TNF-a induced a
significant upregulation of gelatinase B (MMP-9), stromelysin-1 (MMP-3) and
COX-2. In addition, TNF-a significantly depleted glutathione as compared to
saline. Indomethacin (10 mg/kg; i.p.), an inhibitor of COX-1 and COX-2, reduced
BBB damage at 24 h. Indomethacin significantly attenuated MMP-9 and MMP-3
expression and activation, and prevented the loss of endogenous radical
scavenging capacity following intracerebral injection of TNF-a. Our results
show for the first time that BBB disruption during neuroinflammation can be
significantly reduced by administration of COX inhibitors. Modulation of COX in
brain injury by COX inhibitors or agents modulating prostaglandin E2
formation/signaling may be useful in clinical settings associated with BBB
disruption.
| q-bio.TO q-bio.BM | increased permeability of the bloodbrain barrier bbb is important in neurological disorders neuroinflammation is associated with increased bbb breakdown and brain injury tumor necrosis factora tnfa is involved in bbb injury and edema formation through a mechanism involving matrix metalloproteinase mmp upregulation there is emerging evidence indicating that cyclooxygenase cox inhibition limits bbb disruption following ischemic stroke and bacterial meningitis but the mechanisms involved are not known we used intracerebral injection of tnfa to study the effect of cox inhibition on tnfainduced bbb breakdown mmp expressionactivity and oxidative stress bbb disruption was evaluated by the uptake of 14csucrose into the brain and by magnetic resonance imaging mri utilizing gddtpa as a paramagnetic contrast agent using selective inhibitors of each cox isoform we found that cox1 activity is more important than cox2 in bbb opening tnfa induced a significant upregulation of gelatinase b mmp9 stromelysin1 mmp3 and cox2 in addition tnfa significantly depleted glutathione as compared to saline indomethacin 10 mgkg ip an inhibitor of cox1 and cox2 reduced bbb damage at 24 h indomethacin significantly attenuated mmp9 and mmp3 expression and activation and prevented the loss of endogenous radical scavenging capacity following intracerebral injection of tnfa our results show for the first time that bbb disruption during neuroinflammation can be significantly reduced by administration of cox inhibitors modulation of cox in brain injury by cox inhibitors or agents modulating prostaglandin e2 formationsignaling may be useful in clinical settings associated with bbb disruption | [['increased', 'permeability', 'of', 'the', 'bloodbrain', 'barrier', 'bbb', 'is', 'important', 'in', 'neurological', 'disorders', 'neuroinflammation', 'is', 'associated', 'with', 'increased', 'bbb', 'breakdown', 'and', 'brain', 'injury', 'tumor', 'necrosis', 'factora', 'tnfa', 'is', 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711.2097 | Production of spin-3 mesons in diffractive DIS | Non-trivial spin effects do not die out with energy growth. Here, we discuss
one example of such effects -- production of spin-3 mesons in diffractive DIS.
Using both explicit k_t-factorization calculations and their
vector-dominance-model interpretation, we argue that diffractive production of
rho_3(1690) is a unique probe of several novel aspects of diffraction.
| hep-ph | nontrivial spin effects do not die out with energy growth here we discuss one example of such effects production of spin3 mesons in diffractive dis using both explicit k_tfactorization calculations and their vectordominancemodel interpretation we argue that diffractive production of rho_31690 is a unique probe of several novel aspects of diffraction | [['nontrivial', 'spin', 'effects', 'do', 'not', 'die', 'out', 'with', 'energy', 'growth', 'here', 'we', 'discuss', 'one', 'example', 'of', 'such', 'effects', 'production', 'of', 'spin3', 'mesons', 'in', 'diffractive', 'dis', 'using', 'both', 'explicit', 'k_tfactorization', 'calculations', 'and', 'their', 'vectordominancemodel', 'interpretation', 'we', 'argue', 'that', 'diffractive', 'production', 'of', 'rho_31690', 'is', 'a', 'unique', 'probe', 'of', 'several', 'novel', 'aspects', 'of', 'diffraction']] | [-0.08267264469526708, 0.18060704629868268, -0.15247933072037995, 0.14884655288653448, -0.0757074846699834, -0.08247609014622867, 0.025910430029034613, 0.3644069068040699, -0.20885118709877135, -0.19074941858649253, 0.00941495698527433, -0.342445501787588, -0.12118555966764688, 0.16162162941647693, 0.040374377258121964, 0.0695806092210114, 0.049749120008200406, -0.01720080418512225, -0.04991568746510893, -0.20017058566212653, 0.3540245044417679, 0.003924186658114195, 0.23130699600093066, 0.21364618910476565, 0.07603711268864571, 0.09162901339586824, -0.0474031789531, -0.011014994885772466, -0.15046291870603454, 0.057353158574551345, 0.2508530346304178, 0.07903959918301552, 0.17291968993842602, -0.4523486340418458, -0.15020476328209043, 0.08966840239241719, 0.16637512432411314, 0.14900046348222531, -0.11515873776748776, -0.19093206802383064, 0.03329758387990296, -0.2314143082126975, -0.14154254430904983, -0.16421624729409814, -0.043580700349994006, -0.0070968012732919306, -0.24190762075129896, 0.07166043968172744, 0.0015730088762938976, 0.026755897415423533, -0.048847835203632714, -0.14865202700719238, -0.06842655949294567, 0.047572755138389766, 0.06225934312446043, 0.0063305376563221214, 0.17974019249901174, -0.1492889799643308, -0.20766036748886108, 0.38060719445347785, -0.01205560753121972, -0.16436869504861534, 0.17293899679090827, -0.24695787915959955, -0.18924163797870278, 0.09072782877832651, 0.19108540542423724, 0.11162427037954331, -0.1849932114779949, 0.06139283813419752, 0.006261639101430774, 0.1420448889862746, 0.1021771033667028, 0.15107553963549436, 0.20683121806010604, 0.24192939097061752, -0.10868813619483263, 0.06253636127337814, -0.09700595259666443, -0.07710639143362641, -0.3925473575759679, -0.18286909645423294, -0.08010359516367316, 0.11597655978548574, -0.05015074490540428, -0.16342771315947174, 0.32839806865900756, 0.12656083399429918, 0.20672745044343174, -0.017817366756498813, 0.3210915772616863, 0.06176781564950943, 0.05323300440330058, 0.02879431358538568, 0.2898512047342956, 0.1514467939082533, 0.09203581185545773, -0.260235585430637, 0.0185627515707165, 0.008043836746364831] |
711.2098 | Proper actions of Lie groups of dimension $n^2+1$ on $n$-dimensional
complex manifolds | In this paper we continue to study actions of high-dimensional Lie groups on
complex manifolds. We give a complete explicit description of all pairs
$(M,G)$, where $M$ is a connected complex manifold $M$ of dimension $n\ge 2$,
and $G$ is a connected Lie group of dimension $n^2+1$ acting effectively and
properly on $M$ by holomorphic transformations. This result complements a
classification obtained earlier by the first author for $n^2+2\le\hbox{dim}
G<n^2+2n$ and a classical result due to W. Kaup for the maximal group dimension
$n^2+2n$.
| math.CV math.DG | in this paper we continue to study actions of highdimensional lie groups on complex manifolds we give a complete explicit description of all pairs mg where m is a connected complex manifold m of dimension nge 2 and g is a connected lie group of dimension n21 acting effectively and properly on m by holomorphic transformations this result complements a classification obtained earlier by the first author for n22lehboxdim gn22n and a classical result due to w kaup for the maximal group dimension n22n | [['in', 'this', 'paper', 'we', 'continue', 'to', 'study', 'actions', 'of', 'highdimensional', 'lie', 'groups', 'on', 'complex', 'manifolds', 'we', 'give', 'a', 'complete', 'explicit', 'description', 'of', 'all', 'pairs', 'mg', 'where', 'm', 'is', 'a', 'connected', 'complex', 'manifold', 'm', 'of', 'dimension', 'nge', '2', 'and', 'g', 'is', 'a', 'connected', 'lie', 'group', 'of', 'dimension', 'n21', 'acting', 'effectively', 'and', 'properly', 'on', 'm', 'by', 'holomorphic', 'transformations', 'this', 'result', 'complements', 'a', 'classification', 'obtained', 'earlier', 'by', 'the', 'first', 'author', 'for', 'n22lehboxdim', 'gn22n', 'and', 'a', 'classical', 'result', 'due', 'to', 'w', 'kaup', 'for', 'the', 'maximal', 'group', 'dimension', 'n22n']] | [-0.18997258403361206, 0.09072792683387311, -0.033528846149082955, 0.01850491193145877, -0.1121959248891316, -0.13342707669476, 0.02290633988776812, 0.36001401871624517, -0.19877137943943282, -0.2750085087822432, 0.10321578295992279, -0.23848995725374397, -0.17679827937447443, 0.18991917494695815, -0.117928648594676, -0.04797966546583467, 0.057422505492889665, 0.11488949814129894, -0.056983955738293686, -0.307353003762617, 0.4300229008786562, -0.051502152084849956, 0.18416457963971103, 0.010559398839931662, 0.09565164399810316, 0.04321089702113191, -0.06546086197287389, 0.02278192567911635, -0.13923567559047625, 0.16730669814320961, 0.28325647476878835, 0.03438846181180873, 0.20989987247328207, -0.32857857853537653, -0.2102461749540142, 0.17592850897642898, 0.12662802379373916, 0.014381420094428993, 0.009304206939016627, -0.3011266626729971, 0.1130802535889216, -0.13664098509314765, -0.1697950608710327, -0.057208831308455, 0.09780648920866775, -0.06217064959758029, -0.24102016373128607, 0.00821783347055316, 0.15531046771467094, 0.09426126197951551, -0.03702655986587449, -0.08169951922510092, -0.040249101942541395, 0.126509348942796, -0.0676905249824702, 0.08123390990729648, 0.0712118766656736, -0.03038507368892613, -0.12185645046666628, 0.36172922320732076, -0.058566906568935005, -0.21781453812812887, 0.18531663382494049, -0.16660285871135208, -0.18380461050560926, 0.11476355532138813, 0.17647963464998345, 0.18081962856146075, -0.06730413795789568, 0.1926390975010979, -0.10359709011958684, 0.08776125637246524, 0.0764223192591311, -0.049510846005343806, 0.06297780172445061, 0.13279782389801723, 0.1324385325651525, 0.08542893300253171, 0.056867284955820295, 0.039266019486027155, -0.34373668095142373, -0.21773579981314337, -0.16206628579515736, 0.18728162073416682, -0.08559120545769253, -0.08914865307203244, 0.3647284034367015, 0.005373906715426639, 0.25257299158994745, 0.09144598605088526, 0.22457384113534695, 0.02702416776020716, 0.04198861269212169, 0.10349933071652563, 0.08652639893883067, 0.21728922301199197, -0.02323537366464734, -0.1390872731827563, -0.08693696794713415, 0.19199599779960586] |
711.2099 | Euclidean lattice simulation for the dynamical supersymmetry breaking | The global supersymmetry is spontaneously broken if and only if the
ground-state energy is strictly positive. We propose to use this fact to
observe the spontaneous supersymmetry breaking in euclidean lattice
simulations. For lattice formulations that possess a manifest fermionic
symmetry, there exists a natural choice of a hamiltonian operator that is
consistent with a topological property of the Witten index. We confirm validity
of our idea in models of the supersymmetric quantum mechanics. We then examine
a possibility of a dynamical supersymmetry breaking in the two-dimensional
$\mathcal{N}=(2,2)$ super Yang-Mills theory with the gauge group $\SU(2)$, for
which the Witten index is unknown. Differently from a recent conjectural claim,
our numerical result tempts us to conclude that supersymmetry is not
spontaneously broken in this system.
| hep-lat hep-th | the global supersymmetry is spontaneously broken if and only if the groundstate energy is strictly positive we propose to use this fact to observe the spontaneous supersymmetry breaking in euclidean lattice simulations for lattice formulations that possess a manifest fermionic symmetry there exists a natural choice of a hamiltonian operator that is consistent with a topological property of the witten index we confirm validity of our idea in models of the supersymmetric quantum mechanics we then examine a possibility of a dynamical supersymmetry breaking in the twodimensional mathcaln22 super yangmills theory with the gauge group su2 for which the witten index is unknown differently from a recent conjectural claim our numerical result tempts us to conclude that supersymmetry is not spontaneously broken in this system | [['the', 'global', 'supersymmetry', 'is', 'spontaneously', 'broken', 'if', 'and', 'only', 'if', 'the', 'groundstate', 'energy', 'is', 'strictly', 'positive', 'we', 'propose', 'to', 'use', 'this', 'fact', 'to', 'observe', 'the', 'spontaneous', 'supersymmetry', 'breaking', 'in', 'euclidean', 'lattice', 'simulations', 'for', 'lattice', 'formulations', 'that', 'possess', 'a', 'manifest', 'fermionic', 'symmetry', 'there', 'exists', 'a', 'natural', 'choice', 'of', 'a', 'hamiltonian', 'operator', 'that', 'is', 'consistent', 'with', 'a', 'topological', 'property', 'of', 'the', 'witten', 'index', 'we', 'confirm', 'validity', 'of', 'our', 'idea', 'in', 'models', 'of', 'the', 'supersymmetric', 'quantum', 'mechanics', 'we', 'then', 'examine', 'a', 'possibility', 'of', 'a', 'dynamical', 'supersymmetry', 'breaking', 'in', 'the', 'twodimensional', 'mathcaln22', 'super', 'yangmills', 'theory', 'with', 'the', 'gauge', 'group', 'su2', 'for', 'which', 'the', 'witten', 'index', 'is', 'unknown', 'differently', 'from', 'a', 'recent', 'conjectural', 'claim', 'our', 'numerical', 'result', 'tempts', 'us', 'to', 'conclude', 'that', 'supersymmetry', 'is', 'not', 'spontaneously', 'broken', 'in', 'this', 'system']] | [-0.1402481856555002, 0.20317761596262215, -0.11317613379534093, 0.10503406611537831, -0.09797585274904005, -0.1522724780924393, 0.022745692098866246, 0.35406952921391255, -0.209292086922834, -0.23756951837605167, 0.09515399850281556, -0.25122920486835704, -0.21085898013364884, 0.05841611758355172, -0.06602419058476845, 0.03603147191461176, -0.0007968159737966714, 0.027099767975854658, -0.11584381316225195, -0.21905301472983293, 0.3224691592134355, -0.027252912239242914, 0.2801875045988709, 0.062142208470181835, 0.10110283501618993, -0.015524555219247217, 0.047701180187775, -0.025097872634726247, -0.12215153150340953, 0.10879173611042901, 0.18678752331180154, 0.05386902878601705, 0.1633838786548304, -0.414515764677837, -0.23102984086219822, 0.1378595533052219, 0.12959524362738575, 0.14735597715574136, -0.08226706382758435, -0.28277188744921716, 0.09648358264201952, -0.1770072018261999, -0.19194189941176334, -0.09782484822696255, 0.0008714114984257087, -0.14962671926966117, -0.2639376911552503, 0.09745558543926885, 0.04901081300223239, 0.07178659158788862, -0.02078426677513973, 0.004286614835314873, -0.11181898520237976, 0.017516088639123125, 0.13465494307081005, 0.03511677353714232, 0.07746871584188944, -0.15536726817898003, -0.1642569280989964, 0.42549860163501674, -0.026958161719977076, -0.2245631757072143, 0.17258232894669018, -0.13612829579130536, -0.23859001623631845, 0.10028304428523106, 0.06961083483146203, 0.11419886244731324, -0.06431046118884678, 0.1943217674941538, -0.13242091607225442, 0.19152987683041683, 0.02973575839742778, 0.008991302347802106, 0.2379668415223639, 0.11906969805263103, 0.08505509664199405, 0.14041139068262232, 0.034470144057958084, -0.14509261941402068, -0.3998972951479617, -0.15968981197652138, -0.19563333155031526, 0.11839641939725205, -0.07890475027236407, -0.14782416703359735, 0.3890475349861287, 0.15313913343631994, 0.16525751989214651, 0.07859430512161775, 0.19837955203970084, 0.1292650850448427, 0.09775196097325534, 0.034963672477451545, 0.25072805195926656, 0.12852986862379756, 0.06484815995809773, -0.272230981280201, -0.11096491323757707, 0.14368126597706107] |
711.21 | Low-Luminosity Early-Type Galaxies in the NGC 128 Group | We present spatially resolved kinematics and stellar population parameters
for three low-luminosity galaxies in the NGC128 group obtained by means of 3D
spectroscopy. We briefly discuss their evolutionary scenarii.
| astro-ph | we present spatially resolved kinematics and stellar population parameters for three lowluminosity galaxies in the ngc128 group obtained by means of 3d spectroscopy we briefly discuss their evolutionary scenarii | [['we', 'present', 'spatially', 'resolved', 'kinematics', 'and', 'stellar', 'population', 'parameters', 'for', 'three', 'lowluminosity', 'galaxies', 'in', 'the', 'ngc128', 'group', 'obtained', 'by', 'means', 'of', '3d', 'spectroscopy', 'we', 'briefly', 'discuss', 'their', 'evolutionary', 'scenarii']] | [-0.06606492516272867, 0.08367647649720311, -0.06841068468721849, 0.1582296442772661, -0.06814253940579615, -0.06423451398898448, 0.04777519553733457, 0.539627231657505, -0.16684535824294602, -0.358726706089718, 0.06855614501234543, -0.19878186574870987, -0.07543456135317683, 0.18515955829103145, -0.004333088773169688, -0.012562559052769626, 0.05836399265431932, -0.17408967317481125, -0.060028775445451696, -0.23931589662762626, 0.44180913562221186, 0.014439443625243647, 0.07748485562790718, -0.12173954277698483, 0.09115414760474648, -0.04003335327641772, -0.19895378217500234, 0.006717844334031854, -0.254332560912839, 0.02953359903767705, 0.2681911406938785, 0.16569184558466077, 0.18868522146450623, -0.4209580847195217, -0.20906622292074775, 0.015749648313171098, 0.2598888400742518, 0.10082324324840945, -0.1653371598638062, -0.3179354907146522, -0.010029634793422051, -0.15252429582843824, -0.2566293335153854, -0.005697534286550113, -0.008959734878901924, 0.027240032562986016, -0.14428038442773478, 0.13609409794610525, -0.0746325386072775, 0.14313553775926785, -0.162119618995348, -0.12258016863571745, -0.05205250431650451, 0.1252317350756909, -0.017232930354241813, -0.06024173352800842, 0.1737106192990073, -0.14561418505452042, -0.08546028003495719, 0.3782436903566122, -0.05346946857337441, -0.06913105431678039, 0.2340406363364309, -0.21373794575421406, -0.2213251529527562, 0.014727708750537463, 0.12531981617212296, 0.16743022802152804, -0.21454817605470972, -0.010147606149465511, -0.019755965398092355, 0.1548780994489789, -0.0652694202227784, 0.07156735957999315, 0.2741704398899206, 0.15936367030787682, -0.04263398714829236, 0.08258955662937037, -0.22735951321997813, -0.022235440190083215, -0.2136597339329975, -0.09727964736521244, -0.059670597148526995, 0.06919884023123554, -0.11372535407541104, -0.03775112038212163, 0.4027952513923602, 0.10431397998971599, 0.21181076685232775, 0.05970038367169244, 0.2761704706187759, 0.05233065038919449, 0.00923885903154899, 0.09892646692294095, 0.28736473427021075, 0.1752708748598317, 0.037381586485675404, -0.3268435035632657, 0.010037510738974171, 0.036187719919585755] |
711.2101 | Central Spiral Structure of Molecular Gas in Maffei 2 | Distribution and kinematics of molecular gas in the central region of the
barred spiral galaxy Maffei 2 were investigated using a data set of 12CO(1-0),
12CO(2-1), CS(2-1) lines and 103 GHz continuum. We found that the offset ridges
along the kpc-scale bar continue to the central spiral structure embedded in
the weak oval structure which is regarded as x2 orbit in the bar potential. The
spiral structure continues toward the center diverging from the oval structure.
The size of these structures is less than R ~ 100 pc. The mass concentration
within R = 35 pc is estimated to be 2 X 10^8 Mo. The high mass concentration is
consistent with theoretical predictions concerning the creation of such a
nuclear spiral structure. A comparison with the tracers of dense gas and
star-forming region suggests that the dense molecular gas traced by CS(2-1)
line is formed at the crossing points of x1 and x2 orbits and the star-forming
region appears after 2 X 10^5 yr which is comparable with the free-fall time of
the dense gas traced by the CS line (~ 10^5 cm^-3).
| astro-ph | distribution and kinematics of molecular gas in the central region of the barred spiral galaxy maffei 2 were investigated using a data set of 12co10 12co21 cs21 lines and 103 ghz continuum we found that the offset ridges along the kpcscale bar continue to the central spiral structure embedded in the weak oval structure which is regarded as x2 orbit in the bar potential the spiral structure continues toward the center diverging from the oval structure the size of these structures is less than r 100 pc the mass concentration within r 35 pc is estimated to be 2 x 108 mo the high mass concentration is consistent with theoretical predictions concerning the creation of such a nuclear spiral structure a comparison with the tracers of dense gas and starforming region suggests that the dense molecular gas traced by cs21 line is formed at the crossing points of x1 and x2 orbits and the starforming region appears after 2 x 105 yr which is comparable with the freefall time of the dense gas traced by the cs line 105 cm3 | [['distribution', 'and', 'kinematics', 'of', 'molecular', 'gas', 'in', 'the', 'central', 'region', 'of', 'the', 'barred', 'spiral', 'galaxy', 'maffei', '2', 'were', 'investigated', 'using', 'a', 'data', 'set', 'of', '12co10', '12co21', 'cs21', 'lines', 'and', '103', 'ghz', 'continuum', 'we', 'found', 'that', 'the', 'offset', 'ridges', 'along', 'the', 'kpcscale', 'bar', 'continue', 'to', 'the', 'central', 'spiral', 'structure', 'embedded', 'in', 'the', 'weak', 'oval', 'structure', 'which', 'is', 'regarded', 'as', 'x2', 'orbit', 'in', 'the', 'bar', 'potential', 'the', 'spiral', 'structure', 'continues', 'toward', 'the', 'center', 'diverging', 'from', 'the', 'oval', 'structure', 'the', 'size', 'of', 'these', 'structures', 'is', 'less', 'than', 'r', '100', 'pc', 'the', 'mass', 'concentration', 'within', 'r', '35', 'pc', 'is', 'estimated', 'to', 'be', '2', 'x', '108', 'mo', 'the', 'high', 'mass', 'concentration', 'is', 'consistent', 'with', 'theoretical', 'predictions', 'concerning', 'the', 'creation', 'of', 'such', 'a', 'nuclear', 'spiral', 'structure', 'a', 'comparison', 'with', 'the', 'tracers', 'of', 'dense', 'gas', 'and', 'starforming', 'region', 'suggests', 'that', 'the', 'dense', 'molecular', 'gas', 'traced', 'by', 'cs21', 'line', 'is', 'formed', 'at', 'the', 'crossing', 'points', 'of', 'x1', 'and', 'x2', 'orbits', 'and', 'the', 'starforming', 'region', 'appears', 'after', '2', 'x', '105', 'yr', 'which', 'is', 'comparable', 'with', 'the', 'freefall', 'time', 'of', 'the', 'dense', 'gas', 'traced', 'by', 'the', 'cs', 'line', '105', 'cm3']] | [-0.12295493910787628, 0.06260537575645786, -0.030217968816092858, 0.04224028916279268, 0.021690676035359503, -0.034032380366180504, 0.036885157969987224, 0.4206878594122827, -0.19727519288555614, -0.274319301178265, 0.06807872859127302, -0.2720224509740041, 0.002095263821279837, 0.12133962509041238, 0.0460946185069689, -0.040832852604540275, -0.00847290663772987, -0.05679557795778641, -0.0797699167419018, -0.1877679580887262, 0.2794130104374037, 0.0662000351275007, 0.1532487229935618, -0.025137012881330318, 0.04519297435633941, -0.13672706863112075, -0.023316106130369007, -0.016110962344747452, -0.15612378791015039, 0.07185784676629636, 0.21685707171628665, 0.08393126261265328, 0.21345995149782135, -0.3780556162664046, -0.17884149962467039, 0.01608062499564969, 0.22307057505887415, 0.006591144797857851, -0.03597659078012738, -0.3195551028843814, 0.11705842981076178, -0.15456593074680616, -0.23072134191429036, 0.09125598107178425, 0.09109551079794377, 0.02710761495658921, -0.20495051710652964, 0.17103311754407413, 0.007861619155543545, 0.09368804230600492, -0.061914647295553654, -0.11316388948924011, -0.08281013017080517, 0.04236047981410391, -0.03233010785964628, 0.1726400759898954, 0.2893198851314891, -0.11511843913855652, 0.0007052476543726192, 0.4208445928913231, -0.0679909196505226, -0.022176534216850997, 0.24495768558440936, -0.27861671106268965, -0.14998627339696718, 0.2364803566597402, 0.11011349905101168, 0.07681862970219097, -0.0811211526304962, 0.045179469703321554, -0.0871373176936888, 0.22034932085726824, 0.08685948015837412, 0.025251928256491536, 0.2920480515487725, 0.10465914411728995, 0.047451523794896075, 0.09368556701778694, -0.23830320766040433, -0.08784246358296109, -0.22937990735905867, -0.11178924240796025, -0.11511639896650902, 0.09123433581165348, -0.1402704105967132, -0.06999661102114867, 0.3045417256205433, 0.03620117035332239, 0.3188124499309601, -0.024886771485519908, 0.2720742731872532, 0.053835453723069, 0.11918319046704305, 0.1654868607215273, 0.2386067309546181, 0.20983056997130106, 0.05830772646133685, -0.22935537090913083, 0.04912978356134974, -0.0023541152632484833] |
711.2102 | Patterns of i.i.d. Sequences and Their Entropy - Part II: Bounds for
Some Distributions | A pattern of a sequence is a sequence of integer indices with each index
describing the order of first occurrence of the respective symbol in the
original sequence. In a recent paper, tight general bounds on the block entropy
of patterns of sequences generated by independent and identically distributed
(i.i.d.) sources were derived. In this paper, precise approximations are
provided for the pattern block entropies for patterns of sequences generated by
i.i.d. uniform and monotonic distributions, including distributions over the
integers, and the geometric distribution. Numerical bounds on the pattern block
entropies of these distributions are provided even for very short blocks. Tight
bounds are obtained even for distributions that have infinite i.i.d. entropy
rates. The approximations are obtained using general bounds and their
derivation techniques. Conditional index entropy is also studied for
distributions over smaller alphabets.
| cs.IT math.IT | a pattern of a sequence is a sequence of integer indices with each index describing the order of first occurrence of the respective symbol in the original sequence in a recent paper tight general bounds on the block entropy of patterns of sequences generated by independent and identically distributed iid sources were derived in this paper precise approximations are provided for the pattern block entropies for patterns of sequences generated by iid uniform and monotonic distributions including distributions over the integers and the geometric distribution numerical bounds on the pattern block entropies of these distributions are provided even for very short blocks tight bounds are obtained even for distributions that have infinite iid entropy rates the approximations are obtained using general bounds and their derivation techniques conditional index entropy is also studied for distributions over smaller alphabets | [['a', 'pattern', 'of', 'a', 'sequence', 'is', 'a', 'sequence', 'of', 'integer', 'indices', 'with', 'each', 'index', 'describing', 'the', 'order', 'of', 'first', 'occurrence', 'of', 'the', 'respective', 'symbol', 'in', 'the', 'original', 'sequence', 'in', 'a', 'recent', 'paper', 'tight', 'general', 'bounds', 'on', 'the', 'block', 'entropy', 'of', 'patterns', 'of', 'sequences', 'generated', 'by', 'independent', 'and', 'identically', 'distributed', 'iid', 'sources', 'were', 'derived', 'in', 'this', 'paper', 'precise', 'approximations', 'are', 'provided', 'for', 'the', 'pattern', 'block', 'entropies', 'for', 'patterns', 'of', 'sequences', 'generated', 'by', 'iid', 'uniform', 'and', 'monotonic', 'distributions', 'including', 'distributions', 'over', 'the', 'integers', 'and', 'the', 'geometric', 'distribution', 'numerical', 'bounds', 'on', 'the', 'pattern', 'block', 'entropies', 'of', 'these', 'distributions', 'are', 'provided', 'even', 'for', 'very', 'short', 'blocks', 'tight', 'bounds', 'are', 'obtained', 'even', 'for', 'distributions', 'that', 'have', 'infinite', 'iid', 'entropy', 'rates', 'the', 'approximations', 'are', 'obtained', 'using', 'general', 'bounds', 'and', 'their', 'derivation', 'techniques', 'conditional', 'index', 'entropy', 'is', 'also', 'studied', 'for', 'distributions', 'over', 'smaller', 'alphabets']] | [-0.1373800993591112, 0.16599680279741866, -0.0916758973804051, 0.09603617304721915, 0.025949537980091506, -0.13016802319291518, 0.054770479774116164, 0.3848638904627657, -0.2595751478989357, -0.2685649667060968, 0.13941905025926413, -0.28312698261554003, -0.10680869579345777, 0.22584189691225637, -0.08299092756733842, 0.09864701698347246, 0.051839088258014, 0.06013060567465468, -0.08478438130063243, -0.2778599832732108, 0.3028086640533862, 0.03172690112374886, 0.28127409234969286, -0.04150940558658981, 0.06403584319105657, 0.024184741960145043, -0.0946674408377522, -0.001370345602614166, -0.16865280270433083, 0.16504336420419444, 0.2308413252388688, 0.14180205561713286, 0.2108468179332677, -0.38046013142396934, -0.20189943358244333, 0.1284247170088568, 0.1468797703375564, 0.08228832654600596, -0.06093059274381584, -0.24069918693641512, 0.1564741597857571, -0.14881938753775356, -0.06616728272234654, -0.03221653615308069, 0.06017017003529481, 0.12031847363963288, -0.3463450124466887, 0.07858869911151951, 0.11071318301311048, 0.0765150265084549, -0.04638671479697754, -0.18364135612883217, 0.03273403058236424, 0.15267600312856208, 0.05906507456811131, -0.03874545518553605, 0.06390116221006334, -0.055510810819406904, -0.12541223871249732, 0.2943565747870581, -0.07119287476776318, -0.23909180011790598, 0.12300462243623053, -0.1490246505292989, -0.1443220533797667, 0.11214966692683036, 0.16018847326482952, 0.1588617412502585, -0.13861168065128754, 0.08052535468447328, -0.05814951430516739, 0.1388559566851515, 0.11360225539287402, 0.09112587283674736, 0.1937846277439355, 0.038818500882922165, 0.05604627722513991, 0.16729710204526782, -0.035740484075661556, -0.13499769849879464, -0.30253029765602013, -0.08583541538729503, -0.24081831267035572, 0.00017647177191709514, -0.18613501403601432, -0.18073231994002772, 0.3745398110009893, 0.07228498447203778, 0.21558066209723806, 0.17757291853747392, 0.25248506281824007, 0.15293875741126545, 0.0033044236092692253, 0.07020844273731439, 0.10593149518461585, 0.17648264512005024, 0.03227949737788715, -0.10599348487002762, 0.1363313633168497, 0.10384978413119586] |
711.2103 | Science With The Australian Square Kilometre Array Pathfinder | The future of cm and m-wave astronomy lies with the Square Kilometre Array
(SKA), a telescope under development by a consortium of 17 countries that will
be 50 times more sensitive than any existing radio facility. Most of the key
science for the SKA will be addressed through large-area imaging of the
Universe at frequencies from a few hundred MHz to a few GHz. The Australian SKA
Pathfinder (ASKAP) is a technology demonstrator aimed in the mid-frequency
range, and achieves instantaneous wide-area imaging through the development and
deployment of phased-array feed systems on parabolic reflectors. The large
field-of-view makes ASKAP an unprecedented synoptic telescope that will make
substantial advances in SKA key science. ASKAP will be located at the Murchison
Radio Observatory in inland Western Australia, one of the most radio-quiet
locations on the Earth and one of two sites selected by the international
community as a potential location for the SKA. In this paper, we outline an
ambitious science program for ASKAP, examining key science such as
understanding the evolution, formation and population of galaxies including our
own, understanding the magnetic Universe, revealing the transient radio sky and
searching for gravitational waves.
| astro-ph | the future of cm and mwave astronomy lies with the square kilometre array ska a telescope under development by a consortium of 17 countries that will be 50 times more sensitive than any existing radio facility most of the key science for the ska will be addressed through largearea imaging of the universe at frequencies from a few hundred mhz to a few ghz the australian ska pathfinder askap is a technology demonstrator aimed in the midfrequency range and achieves instantaneous widearea imaging through the development and deployment of phasedarray feed systems on parabolic reflectors the large fieldofview makes askap an unprecedented synoptic telescope that will make substantial advances in ska key science askap will be located at the murchison radio observatory in inland western australia one of the most radioquiet locations on the earth and one of two sites selected by the international community as a potential location for the ska in this paper we outline an ambitious science program for askap examining key science such as understanding the evolution formation and population of galaxies including our own understanding the magnetic universe revealing the transient radio sky and searching for gravitational waves | [['the', 'future', 'of', 'cm', 'and', 'mwave', 'astronomy', 'lies', 'with', 'the', 'square', 'kilometre', 'array', 'ska', 'a', 'telescope', 'under', 'development', 'by', 'a', 'consortium', 'of', '17', 'countries', 'that', 'will', 'be', '50', 'times', 'more', 'sensitive', 'than', 'any', 'existing', 'radio', 'facility', 'most', 'of', 'the', 'key', 'science', 'for', 'the', 'ska', 'will', 'be', 'addressed', 'through', 'largearea', 'imaging', 'of', 'the', 'universe', 'at', 'frequencies', 'from', 'a', 'few', 'hundred', 'mhz', 'to', 'a', 'few', 'ghz', 'the', 'australian', 'ska', 'pathfinder', 'askap', 'is', 'a', 'technology', 'demonstrator', 'aimed', 'in', 'the', 'midfrequency', 'range', 'and', 'achieves', 'instantaneous', 'widearea', 'imaging', 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711.2104 | On the Information Rates of the Plenoptic Function | The {\it plenoptic function} (Adelson and Bergen, 91) describes the visual
information available to an observer at any point in space and time. Samples of
the plenoptic function (POF) are seen in video and in general visual content,
and represent large amounts of information. In this paper we propose a
stochastic model to study the compression limits of the plenoptic function. In
the proposed framework, we isolate the two fundamental sources of information
in the POF: the one representing the camera motion and the other representing
the information complexity of the "reality" being acquired and transmitted. The
sources of information are combined, generating a stochastic process that we
study in detail. We first propose a model for ensembles of realities that do
not change over time. The proposed model is simple in that it enables us to
derive precise coding bounds in the information-theoretic sense that are sharp
in a number of cases of practical interest. For this simple case of static
realities and camera motion, our results indicate that coding practice is in
accordance with optimal coding from an information-theoretic standpoint. The
model is further extended to account for visual realities that change over
time. We derive bounds on the lossless and lossy information rates for this
dynamic reality model, stating conditions under which the bounds are tight.
Examples with synthetic sources suggest that in the presence of scene dynamics,
simple hybrid coding using motion/displacement estimation with DPCM performs
considerably suboptimally relative to the true rate-distortion bound.
| cs.IT cs.CV math.IT math.PR | the it plenoptic function adelson and bergen 91 describes the visual information available to an observer at any point in space and time samples of the plenoptic function pof are seen in video and in general visual content and represent large amounts of information in this paper we propose a stochastic model to study the compression limits of the plenoptic function in the proposed framework we isolate the two fundamental sources of information in the pof the one representing the camera motion and the other representing the information complexity of the reality being acquired and transmitted the sources of information are combined generating a stochastic process that we study in detail we first propose a model for ensembles of realities that do not change over time the proposed model is simple in that it enables us to derive precise coding bounds in the informationtheoretic sense that are sharp in a number of cases of practical interest for this simple case of static realities and camera motion our results indicate that coding practice is in accordance with optimal coding from an informationtheoretic standpoint the model is further extended to account for visual realities that change over time we derive bounds on the lossless and lossy information rates for this dynamic reality model stating conditions under which the bounds are tight examples with synthetic sources suggest that in the presence of scene dynamics simple hybrid coding using motiondisplacement estimation with dpcm performs considerably suboptimally relative to the true ratedistortion bound | [['the', 'it', 'plenoptic', 'function', 'adelson', 'and', 'bergen', '91', 'describes', 'the', 'visual', 'information', 'available', 'to', 'an', 'observer', 'at', 'any', 'point', 'in', 'space', 'and', 'time', 'samples', 'of', 'the', 'plenoptic', 'function', 'pof', 'are', 'seen', 'in', 'video', 'and', 'in', 'general', 'visual', 'content', 'and', 'represent', 'large', 'amounts', 'of', 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711.2105 | Radiation Tolerance of Fully-Depleted P-Channel CCDs Designed for the
SNAP Satellite | Thick, fully depleted p-channel charge-coupled devices (CCDs) have been
developed at the Lawrence Berkeley National Laboratory (LBNL). These CCDs have
several advantages over conventional thin, n-channel CCDs, including enhanced
quantum efficiency and reduced fringing at near-infrared wavelengths and
improved radiation tolerance. Here we report results from the irradiation of
CCDs with 12.5 and 55 MeV protons at the LBNL 88-Inch Cyclotron and with 0.1-1
MeV electrons at the LBNL Co60 source. These studies indicate that the LBNL
CCDs perform well after irradiation, even in the parameters in which
significant degradation is observed in other CCDs: charge transfer efficiency,
dark current, and isolated hot pixels. Modeling the radiation exposure over a
six-year mission lifetime with no annealing, we expect an increase in dark
current of 20 e/pixel/hr, and a degradation of charge transfer efficiency in
the parallel direction of 3e-6 and 1e-6 in the serial direction. The dark
current is observed to improve with an annealing cycle, while the parallel CTE
is relatively unaffected and the serial CTE is somewhat degraded. As expected,
the radiation tolerance of the p-channel LBNL CCDs is significantly improved
over the conventional n-channel CCDs that are currently employed in space-based
telescopes such as the Hubble Space Telescope.
| astro-ph | thick fully depleted pchannel chargecoupled devices ccds have been developed at the lawrence berkeley national laboratory lbnl these ccds have several advantages over conventional thin nchannel ccds including enhanced quantum efficiency and reduced fringing at nearinfrared wavelengths and improved radiation tolerance here we report results from the irradiation of ccds with 125 and 55 mev protons at the lbnl 88inch cyclotron and with 011 mev electrons at the lbnl co60 source these studies indicate that the lbnl ccds perform well after irradiation even in the parameters in which significant degradation is observed in other ccds charge transfer efficiency dark current and isolated hot pixels modeling the radiation exposure over a sixyear mission lifetime with no annealing we expect an increase in dark current of 20 epixelhr and a degradation of charge transfer efficiency in the parallel direction of 3e6 and 1e6 in the serial direction the dark current is observed to improve with an annealing cycle while the parallel cte is relatively unaffected and the serial cte is somewhat degraded as expected the radiation tolerance of the pchannel lbnl ccds is significantly improved over the conventional nchannel ccds that are currently employed in spacebased telescopes such as the hubble space telescope | [['thick', 'fully', 'depleted', 'pchannel', 'chargecoupled', 'devices', 'ccds', 'have', 'been', 'developed', 'at', 'the', 'lawrence', 'berkeley', 'national', 'laboratory', 'lbnl', 'these', 'ccds', 'have', 'several', 'advantages', 'over', 'conventional', 'thin', 'nchannel', 'ccds', 'including', 'enhanced', 'quantum', 'efficiency', 'and', 'reduced', 'fringing', 'at', 'nearinfrared', 'wavelengths', 'and', 'improved', 'radiation', 'tolerance', 'here', 'we', 'report', 'results', 'from', 'the', 'irradiation', 'of', 'ccds', 'with', '125', 'and', '55', 'mev', 'protons', 'at', 'the', 'lbnl', '88inch', 'cyclotron', 'and', 'with', '011', 'mev', 'electrons', 'at', 'the', 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711.2106 | Hydrodynamic Simulations of Unevenly Irradiated Jovian Planets | We employ a two-dimensional grid-based hydrodynamic model to simulate upper
atmospheric dynamics on extrasolar giant planets. Our model is well-suited to
simulate the dynamics of the atmospheres of planets with high orbital
eccentricity that are subject to widely-varying irradiation conditions. We
identify six such planets, with eccentricities between $e=0.28$ and $e=0.93$
and semimajor axes ranging from $a=0.0508$ A.U. to $a=0.432$ A.U., as
particularly interesting objects for study. For each of these planets, we
determine the temperature profile and resulting infrared light curves in the
8-$\mu$m Spitzer bands. Especially notable are the results for HD 80606b, which
has the largest eccentricity ($e=0.9321$) of any known planet, and HAT-P-2b,
which transits its parent star, so that its physical properties are
well-constrained. Despite the variety of orbital parameters, the atmospheric
dynamics of these eccentric planets display a number of interesting common
properties. In all cases, the atmospheric response is primarily driven by the
intense irradiation at periastron. The resulting expansion of heated air
produces high-velocity turbulent flow, including long-lived circumpolar
vortices. Additionally, a superrotating acoustic front develops on some
planets; the strength of this disturbance depends on both the eccentricity and
the temperature gradient resulting from uneven heating. The specifics of the
resulting infrared light curves depend strongly on the orbital geometry. We
show, however, that the variations on HD 80606 b and HAT-P-2b should be readily
detectable at 4.5 and 8 $\mu$m using the Spitzer Space Telescope. Indeed, these
two objects present the most attractive observational targets of all known
high-$e$ exoplanets.
| astro-ph | we employ a twodimensional gridbased hydrodynamic model to simulate upper atmospheric dynamics on extrasolar giant planets our model is wellsuited to simulate the dynamics of the atmospheres of planets with high orbital eccentricity that are subject to widelyvarying irradiation conditions we identify six such planets with eccentricities between e028 and e093 and semimajor axes ranging from a00508 au to a0432 au as particularly interesting objects for study for each of these planets we determine the temperature profile and resulting infrared light curves in the 8mum spitzer bands especially notable are the results for hd 80606b which has the largest eccentricity e09321 of any known planet and hatp2b which transits its parent star so that its physical properties are wellconstrained despite the variety of orbital parameters the atmospheric dynamics of these eccentric planets display a number of interesting common properties in all cases the atmospheric response is primarily driven by the intense irradiation at periastron the resulting expansion of heated air produces highvelocity turbulent flow including longlived circumpolar vortices additionally a superrotating acoustic front develops on some planets the strength of this disturbance depends on both the eccentricity and the temperature gradient resulting from uneven heating the specifics of the resulting infrared light curves depend strongly on the orbital geometry we show however that the variations on hd 80606 b and hatp2b should be readily detectable at 45 and 8 mum using the spitzer space telescope indeed these two objects present the most attractive observational targets of all known highe exoplanets | [['we', 'employ', 'a', 'twodimensional', 'gridbased', 'hydrodynamic', 'model', 'to', 'simulate', 'upper', 'atmospheric', 'dynamics', 'on', 'extrasolar', 'giant', 'planets', 'our', 'model', 'is', 'wellsuited', 'to', 'simulate', 'the', 'dynamics', 'of', 'the', 'atmospheres', 'of', 'planets', 'with', 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711.2107 | Study of Polarization in B -> VT Decays | In this paper, we examine B -> VT decays (V is a vector and T is a tensor
meson), whose final-state particles can have transverse or longitudinal
polarization. Measurements have been made of B -> \phi K_2^*, and it is found
that fT/fL is small, where fT (fL) is the fraction of transverse (longitudinal)
decays. We find that the standard model (SM) naively predicts that fT/fL << 1.
The two extensions of the naive SM which have been proposed to explain the
large fT/fL in B -> \phi K^* -- penguin annihilation and rescattering -- make
no firm predictions for the polarization in B -> \phi K_2^*. The two
new-physics scenarios, which explain the data in B -> \pi K and the \phi (\rho)
K^* polarization measurements, can reproduce the fT/fL data in B -> \phi K_2^*
only if the B -> T form factors obey a certain hierarchy. Finally, we present
the general angular analysis which can be used to get helicity information
using two- and three-body decays.
| hep-ph | in this paper we examine b vt decays v is a vector and t is a tensor meson whose finalstate particles can have transverse or longitudinal polarization measurements have been made of b phi k_2 and it is found that ftfl is small where ft fl is the fraction of transverse longitudinal decays we find that the standard model sm naively predicts that ftfl 1 the two extensions of the naive sm which have been proposed to explain the large ftfl in b phi k penguin annihilation and rescattering make no firm predictions for the polarization in b phi k_2 the two newphysics scenarios which explain the data in b pi k and the phi rho k polarization measurements can reproduce the ftfl data in b phi k_2 only if the b t form factors obey a certain hierarchy finally we present the general angular analysis which can be used to get helicity information using two and threebody decays | [['in', 'this', 'paper', 'we', 'examine', 'b', 'vt', 'decays', 'v', 'is', 'a', 'vector', 'and', 't', 'is', 'a', 'tensor', 'meson', 'whose', 'finalstate', 'particles', 'can', 'have', 'transverse', 'or', 'longitudinal', 'polarization', 'measurements', 'have', 'been', 'made', 'of', 'b', 'phi', 'k_2', 'and', 'it', 'is', 'found', 'that', 'ftfl', 'is', 'small', 'where', 'ft', 'fl', 'is', 'the', 'fraction', 'of', 'transverse', 'longitudinal', 'decays', 'we', 'find', 'that', 'the', 'standard', 'model', 'sm', 'naively', 'predicts', 'that', 'ftfl', '1', 'the', 'two', 'extensions', 'of', 'the', 'naive', 'sm', 'which', 'have', 'been', 'proposed', 'to', 'explain', 'the', 'large', 'ftfl', 'in', 'b', 'phi', 'k', 'penguin', 'annihilation', 'and', 'rescattering', 'make', 'no', 'firm', 'predictions', 'for', 'the', 'polarization', 'in', 'b', 'phi', 'k_2', 'the', 'two', 'newphysics', 'scenarios', 'which', 'explain', 'the', 'data', 'in', 'b', 'pi', 'k', 'and', 'the', 'phi', 'rho', 'k', 'polarization', 'measurements', 'can', 'reproduce', 'the', 'ftfl', 'data', 'in', 'b', 'phi', 'k_2', 'only', 'if', 'the', 'b', 't', 'form', 'factors', 'obey', 'a', 'certain', 'hierarchy', 'finally', 'we', 'present', 'the', 'general', 'angular', 'analysis', 'which', 'can', 'be', 'used', 'to', 'get', 'helicity', 'information', 'using', 'two', 'and', 'threebody', 'decays']] | [-0.13034024231762584, 0.2213063749174277, -0.09891570654094407, 0.08219531731117728, -0.08608508738451169, -0.19654408589579492, 0.01924684339967328, 0.32684882685143807, -0.2585635499372703, -0.24724733072139746, -0.014046621770281697, -0.3170267720736048, -0.06162102264777718, 0.10949402488475232, 0.0645155412153745, 0.032642316389477476, 0.06274388798032214, 0.10207372512551224, -0.027907161866519717, -0.21915264384317323, 0.24091475820110278, -0.04932114174267359, 0.16947735056468527, 0.07112098165711611, 0.008720117036850666, -0.0032669072707166087, -0.02685657903294331, 0.036514640776967665, -0.16508232821623828, 0.023877343036228522, 0.18666731480526616, 0.13974407015649495, 0.15563915442651924, -0.34821677784898186, -0.12055080849677324, 0.17774941500733202, 0.13809804984590965, 0.04458776378854758, 0.008624472495010298, -0.248965635652648, 0.14483884848220824, -0.16013796022747578, -0.04795497691012778, -0.13180382028456378, 0.09778890517502203, -0.07588017303730894, -0.371466764975222, 0.07366170036846643, 0.03927410035481993, 0.02304735082002509, 0.02128075019591166, -0.2178196726402022, -0.042070408392721005, 0.039371076296230066, 0.1123256959620008, 0.14654130512868999, 0.12870530266923913, -0.12728957061614818, -0.11713443479776008, 0.39253475948137306, -0.1158658149626557, -0.20551620064150988, 0.11973912683286288, -0.21659736636639484, -0.13733059684903384, 0.11444409045027627, 0.1717791224320261, 0.05904208789667431, -0.13978440012730095, 0.16989056636987887, -0.08398009262651017, 0.1593145420862678, 0.06849230254514131, 0.020964323283457226, 0.1831678044191509, 0.08125879842225674, -0.015870277224761673, 0.07091135985537216, -0.11074458713988838, -0.022443450917050523, -0.3602092931129085, -0.15334814496385227, -0.09516114256573173, 0.0741282091219763, -0.048656237604072373, -0.07806302653625607, 0.3482157667160163, 0.0869066388645164, 0.2737771193500544, 0.015765657059045847, 0.3000066906020467, 0.09934921344557672, 0.0937304260738563, 0.0937489640764283, 0.2839557147122123, 0.16620411833385065, 0.11134641216233161, -0.23991547975946897, 0.04512255124267448, -0.012205101473479526] |
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