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the connection between symmetries and linearizations of discrete - time dynamical systems is being inverstigated. it is shown, that existence of semigroup structures related to the vector field and having linear representations enables reduction of linearization problem to a system of first order partial differential e... | arxiv:nlin/0309055 |
k = 2m, 1 \ leq m \ leq j. \ end { eqnarray * } | arxiv:1507.05239 |
we perform an extensive and detailed analysis of the generalized diffusion processes in deterministic area preserving maps with noncompact phase space, exemplified by the standard map, with the special emphasis on understanding the anomalous diffusion arising due to the accelerator modes. the accelerator modes and thei... | arxiv:1309.7793 |
smart city technology is making cities more effective which is necessary for the rapid growth in urban population. with the rapid increase in advanced metering infrastructure and other digital technologies, smart cities have become smarter with efficient electronic devices and embedded sensors based on the internet of ... | arxiv:2002.01716 |
can overwhelm thinking. technology is " rapidly and profoundly altering our brains. " high exposure levels stimulate brain cell alteration and release neurotransmitters, which causes the strengthening of some neural pathways and the weakening of others. this leads to heightened stress levels on the brain that, at first... | https://en.wikipedia.org/wiki/Educational_technology |
as quantum technologies mature, the development of tools for benchmarking their ability to prepare and manipulate complex quantum states becomes increasingly necessary. a key concept, the state overlap between two quantum states, offers a natural tool to verify and cross - validate quantum simulators and quantum comput... | arxiv:2112.11618 |
we showed in hep - th / 0303210 that the dijkgraaf - vafa theory can be regarded as large - n reduction in the case of $ \ mathcal { n } = 1 $ supersymmetric u ( n ) gauge theories, with single adjoint matter. we generalize this to gauge theories with gauge groups being the products of some unitary groups coupled to bi... | arxiv:hep-th/0312026 |
we present the iacob grid - based automatic tool for the quantitative spectroscopic analysis of o - stars. the tool consists of an extensive grid of fastwind models, and a variety of programs implemented in idl to handle the observations, perform the automatic analysis, and visualize the results. the tool provides a fa... | arxiv:1111.1341 |
by adapting the notion of chirality group, the duality group of $ \ cal h $ can be defined as the the minimal subgroup $ d ( { \ cal h } ) \ trianglelefteq mon ( { \ cal h } ) $ such that $ { \ cal h } / d ( { \ cal h } ) $ is a self - dual hypermap ( a hypermap isomorphic to its dual ). here, we prove that for any pos... | arxiv:1101.4814 |
in contrast to computer science, where the fundamental role of logic is widely recognized, it plays a practically non - existent role in information systems curricula. in this paper we argue that instead of logic ' s exclusion from the is curriculum, a significant adaptation of the contents, as well as teaching methodo... | arxiv:1507.03687 |
we propose a computationally - friendly adaptive learning rate schedule, " adaloss ", which directly uses the information of the loss function to adjust the stepsize in gradient descent methods. we prove that this schedule enjoys linear convergence in linear regression. moreover, we provide a linear convergence guarant... | arxiv:2109.08282 |
an optical phonon limited velocity model has been employed to investigate high - field transport in a selection of layered 2d materials for both, low - power logic switches with scaled supply voltages, and high - power, high - frequency transistors. drain currents, effective electron velocities and intrinsic cut - off ... | arxiv:1508.02828 |
we investigate a gauge theory realization of non - abelian discrete flavor symmetries and apply the gauge enhancement mechanism in heterotic orbifold models to field - theoretical model building. several phenomenologically interesting non - abelian discrete symmetries are realized effectively from a $ u ( 1 ) $ gauge t... | arxiv:1502.00789 |
we prove that a topological clifford semigroup $ s $ is metrizable if and only if $ s $ is an $ m $ - space and the set $ e = \ { e \ in s : ee = e \ } $ of idempotents of $ s $ is a metrizable $ g _ \ delta $ - set in $ s $. the same metrization criterion holds also for any countably compact clifford topological semig... | arxiv:1105.2806 |
we report a preliminary branching fraction of ( 1. 80 + / - 0. 37 ( stat. ) + / - 0. 23 ( syst. ) ) x 10 ^ - 4 for the charmless exclusive semileptonic b + - > pi0 l + nu decay, where l can be either a muon or an electron. this result is based on data corresponding to an integrated luminosity of 81 fb ^ - 1 collected a... | arxiv:hep-ex/0506065 |
normalizing flows are a powerful technique for learning and modeling probability distributions given samples from those distributions. the current state of the art results are built upon residual flows as these can model a larger hypothesis space than coupling layers. however, residual flows are extremely computational... | arxiv:2009.07419 |
interesting objections to conclusions of our experiment with nested interferometers raised by salih in a recent commentary are analysed and refuted. | arxiv:1401.5420 |
recent and upcoming stabilized spectrographs are pushing the frontier for doppler spectroscopy to detect and characterize low - mass planets. specifications for these instruments are so impressive that intrinsic stellar variability is expected to limit their doppler precision for most target stars ( fischer et al. 2016... | arxiv:2005.01489 |
we study a klein - gordon - maxwell system, in a bounded spatial domain, under neumann boundary conditions on the electric potential. we allow a nonconstant coupling coefficient. for sufficiently small data, we find infinitely many static solutions. | arxiv:1912.00808 |
the interpretation of the lexical aspect of verbs in english plays a crucial role for recognizing textual entailment and learning discourse - level inferences. we show that two elementary dimensions of aspectual class, states vs. events, and telic vs. atelic events, can be modelled effectively with distributional seman... | arxiv:2011.00345 |
we are enveloped by stories of visual interpretations in our everyday lives. the way we narrate a story often comprises of two stages, which are, forming a central mind map of entities and then weaving a story around them. a contributing factor to coherence is not just basing the story on these entities but also, refer... | arxiv:1909.09699 |
the existence of the exclusion zone ( ez ), a layer of water in which plastic microspheres are repelled from hydrophilic surfaces, has now been independently demonstrated by several groups. a better understanding of the mechanisms which generate ezs would help with understanding the possible importance of ezs in biolog... | arxiv:1909.06822 |
we describe the 1. 2 update to nlox, a computer program for calculations in high - energy particle physics. new features since the 1. 0 release and other changes are described, along with usage documentation. | arxiv:2101.01305 |
services. biotechnology is based on the basic biological sciences ( e. g., molecular biology, biochemistry, cell biology, embryology, genetics, microbiology ) and conversely provides methods to support and perform basic research in biology. biotechnology is the research and development in the laboratory using bioinform... | https://en.wikipedia.org/wiki/Biotechnology |
some new expressions are found, concerning the one - loop effective action of four dimensional massive and massless dirac fermions in the presence of general uniform electric and magnetic fields, with $ \ vec e \ cdot \ vec h \ neq 0 $ and $ \ vec e ^ 2 \ neq \ vec h ^ 2 $. the rate of pair - production is computed and... | arxiv:hep-th/9802167 |
we consider the joint design and control of discrete - time stochastic dynamical systems over a finite time horizon. we formulate the problem as a multi - step optimization problem under uncertainty seeking to identify a system design and a control policy that jointly maximize the expected sum of rewards collected over... | arxiv:2006.01738 |
in this work we describe a scheme to perform a continuous over time quantum non demolition ( qnd ) mea - surement of the number of phonons of a nanoelectromechanical system ( nems ). our scheme also allows us to describe the statistics of the number of phonons. | arxiv:1601.03750 |
the ratio of the self - gravitational energy density of the scattering particles in the universe to the energy density of the scattered photons in the cosmic microwave background ( cmb ) is the same in any volume of space. these two energy densities are equal at a radiation temperature on the order of the present cmb t... | arxiv:0910.0198 |
we prove that any one - dimensional ( 1d ) quantum state with small quantum conditional mutual information in all certain tripartite splits of the system, which we call a quantum approximate markov chain, can be well - approximated by a gibbs state of a short - range quantum hamiltonian. conversely, we also derive an u... | arxiv:1609.06636 |
one of the main challenges in simultaneous localization and mapping ( slam ) is real - time processing. high - computational loads linked to data acquisition and processing complicate this task. this article presents an efficient feature extraction approach for mapping structured environments. the proposed methodology,... | arxiv:2402.03376 |
a scalar field with a modified dispersion relation may seed, under certain conditions, the primordial perturbations during a decelerated expansion. in this note we examine whether and how these perturbations can be responsible for the structure formation of observable universe. we discuss relevant difficulties and poss... | arxiv:gr-qc/0609071 |
group testing is one of the fundamental problems in coding theory and combinatorics in which one is to identify a subset of contaminated items from a given ground set. there has been renewed interest in group testing recently due to its applications in diagnostic virology, including pool testing for the novel coronavir... | arxiv:2202.04988 |
originally proposed as an $ o ( d, d ) $ - invariant formulation of classical closed string theory, double field theory ( dft ) offers a rich source of mathematical structures. most prominently, its gauge algebra is determined by the so - called c - bracket, a generalization of the courant bracket of generalized geomet... | arxiv:1511.03929 |
the embedding diagrams of representations of the n = 2 superconformal algebra with central charge c = 3 are given. some non - unitary representations possess subsingular vectors that are systematically described. the structure of the embedding diagrams is largely defined by the spectral flow symmetry. as an additional ... | arxiv:hep-th/0306073 |
210 b and sr 12 c and find they best resemble low gravity m9. 5 and m9 substellar templates. | arxiv:1401.7668 |
the surface of a three dimensional topological insulator ( ti ) hosts surface states whose properties are determined by a dirac - like equation. the electronic system on the surface of ti nanowires with polygonal cross - sectional shape adopts the corresponding polygonal shape. in a constant transverse magnetic field, ... | arxiv:2405.03380 |
in this study we explore the complex multi - phase gas of the circumgalactic medium ( cgm ) surrounding galaxies. we propose and implement a novel, super - lagrangian ' cgm zoom ' scheme in the moving - mesh code arepo, which focuses more resolution into the cgm and intentionally lowers resolution in the dense ism. we ... | arxiv:1811.01949 |
competition is one of the most fundamental phenomena in physics, biology and economics. recent studies of the competition between innovations have highlighted the influence of switching costs and interaction networks, but the problem is still puzzling. we introduce a model that reveals a novel multi - percolation proce... | arxiv:1101.0775 |
a version of the configuration interaction method, which has been recently developed to deal with large number of valence electrons, has been used to calculate magnetic dipole and electric quadrupole hyperfine structure constants for a number of states of erbium and fermium. calculations for fermium are done for extrac... | arxiv:2305.05806 |
the minkowski content of a compact set is a fine measure of its geometric scaling. for lebesgue null sets it measures the decay of the lebesgue measure of epsilon neighbourhoods of the set. it is well known that self - similar sets, satisfying reasonable separation conditions and non - log comensurable contraction rati... | arxiv:2103.04664 |
interactive segmentation plays a crucial role in accelerating the annotation, particularly in domains requiring specialized expertise such as nuclear medicine. for example, annotating lesions in whole - body positron emission tomography ( pet ) images can require over an hour per volume. while previous works evaluate i... | arxiv:2404.01816 |
in order to obtain more comprehensive information about an celestial object, the radio image must be identified with the optical one. many years the identification process is carried out with the coordinate coincidence criteria, which leads to abundant misidentifications and " empty field " in optics for the radio sour... | arxiv:0704.3709 |
we construct two infinite - dimensional irreducible representations for $ d ( 2, 1 ; \ alpha ) $ : a schr \ " odinger model and a fock model. further, we also introduce an intertwining isomorphism. these representations are similar to the minimal representations constructed for the orthosymplectic lie supergroup and fo... | arxiv:2104.00326 |
we propose the simplest possible renormalizable extension of the standard model - the addition of just one singlet scalar field - as a minimalist model for non - baryonic dark matter. such a model is characterized by only three parameters in addition to those already appearing within the standard model : a dimensionles... | arxiv:hep-ph/0011335 |
in this work, we systematically investigate the heavy - strange meson systems, $ d ^ { ( * ) } k ^ { ( * ) } / \ bar { b } ^ { ( * ) } k ^ { ( * ) } $ and $ \ bar { d } ^ { ( * ) } k ^ { ( * ) } / b ^ { ( * ) } k ^ { ( * ) } $, to study possible molecules in a quasipotenial bethe - salpter equation approach together wi... | arxiv:2106.07272 |
it is shown that general dilepton angular distribution ( with parity violating terms taking into account ) in vector particle decays can be described through a set of five so ( 3 ) rotational - invariant observables. these observables are derived as invariants of the spacial part of the hadronic tensor ( density matrix... | arxiv:1901.04018 |
in this article, we investigate the impact of twisted space - time on the photoelectric effect, i. e., we derive the $ \ theta $ - deformed threshold frequency. in such a way we indicate that the space - time noncommutativity strongly enhances the photoelectric process. | arxiv:1605.05678 |
in this paper we discuss some mathematical aspects of the horizon wave - function formalism, also known in the literature as horizon quantum mechanics. in particular, first we review the structure of both the global and local formalism for static spherically symmetric sources. then, we present an extension of the globa... | arxiv:1709.10348 |
infections from parasitic nematodes ( or roundworms ) contribute to a significant disease burden and productivity losses for humans and livestock. the limited number of anthelmintics ( or antinematode drugs ) available today to treat these infections are rapidly losing their efficacy as multidrug resistance in parasite... | arxiv:2205.13544 |
the vision transformer ( vit ) has gained prominence for its superior relational modeling prowess. however, its global attention mechanism ' s quadratic complexity poses substantial computational burdens. a common remedy spatially groups tokens for self - attention, reducing computational requirements. nonetheless, thi... | arxiv:2405.13337 |
the proposed pruning strategy offers merits over weight - based pruning techniques : ( 1 ) it avoids irregular memory access since representations and matrices can be squeezed into their smaller but dense counterparts, leading to greater speedup ; ( 2 ) in a manner of top - down pruning, the proposed method operates fr... | arxiv:2108.12594 |
the dynamics of a tachyon field plus a barotropic fluid is investigated in spatially curved frw universe. we perform a phase - plane analysis and obtain scaling solutions accompanying with a discussion on their stability. furthermore, we construct the form of scalar potential which may give rise to stable solutions for... | arxiv:1003.1870 |
we provide and analyze a periodic anderson model for studying magnetism and superconductivity in ute $ _ 2 $, a recently - discovered candidate for a topological spin - triplet superconductor. the 24 - band tight - binding model reproduces the band structure obtained from a dft $ + u $ calculation consistent with an an... | arxiv:2008.01945 |
in this document we consider the problem of finding the optimal layout for the array of water cherenkov detectors proposed by the swgo collaboration to study very - high - energy gamma rays in the southern hemisphere. we develop a continuous model of the secondary particles produced by atmospheric showers initiated by ... | arxiv:2310.01857 |
magnetism induced by external pressure ( $ p $ ) was studied in a fese crystal sample by means of muon - spin rotation. the magnetic transition changes from second - order to first - order for pressures exceeding the critical value $ p _ { { \ rm c } } \ simeq2. 4 - 2. 5 $ gpa. the magnetic ordering temperature ( $ t _... | arxiv:1804.04169 |
we examine the incipient infinite cluster ( iic ) of critical percolation in regimes where mean - field behavior has been established, namely when the dimension d is large enough or when d > 6 and the lattice is sufficiently spread out. we find that random walk on the iic exhibits anomalous diffusion with the spectral ... | arxiv:0806.1442 |
using nottale ' s theory of scale relativity relying on a fractal space - time, we derive a generalized schr \ " odinger equation taking into account the interaction of the system with the external environment. this equation describes the irreversible evolution of the system towards a static quantum state. we first int... | arxiv:1612.02323 |
we give an elementary approach to studying whether rings of $ s $ - integers in complex quadratic fields are euclidean with respect to the $ s $ - norm. | arxiv:2203.15223 |
high - resolution spectra of a giant solar quiescent filament were taken with the echelle spectrograph at the vacuum tower telescope ( vtt ; tenerife, spain ). a mosaic of various spectroheliograms ( h \ alpha, h \ alpha \ + / - 0. 5 \ aa \ and na d2 ) were chosen to examine the filament at different heights in the sol... | arxiv:1309.7861 |
along their long propagation from production to detection, neutrino states undergo quantum interference which converts their types, or flavours. high - energy astrophysical neutrinos, first observed by the icecube neutrino observatory, are known to propagate unperturbed over a billion light years in vacuum. these neutr... | arxiv:2111.04654 |
if double neutron star mergers leave behind a massive magnetar rather than a black hole, a bright early afterglow can follow the gravitational wave burst ( gwb ) even if there is no short gamma - ray burst ( sgrb ) - gwb association or there is an association but the sgrb does not beam towards earth. besides directly d... | arxiv:1301.0439 |
to address the challenge of extending the transmission range of implantable txs while also minimizing their size and power consumption, this paper introduces a transcutaneous, high data - rate, fully integrated ir - uwb transmitter that employs a novel co - designed power amplifier ( pa ) and antenna interface for enha... | arxiv:2405.04177 |
the description of algebraic structure of n - fold loop spaces can be done either using the formalism of topological operads, or using variations of segal ' s $ \ gamma $ - spaces. the formalism of topological operads generalises well to different categories yielding such notions as $ \ mathbb e _ n $ - algebras in cha... | arxiv:1410.3387 |
the hh 24 - 26 star - forming region within the l1630 dark cloud in orion contains a remarkable collection of rare class 0 and class i protostars, collimated molecular and ionized jets, and a luminous but spatially unresolved asca x - ray source. to study the x - ray properties of the embedded protostar population of t... | arxiv:astro-ph/0404260 |
we present a subproblemation scheme for heuristical solving of the jsp ( job reassignment problem ). the cost function of the jsp is described via a qubo hamiltonian to allow implementation in both gate - based and annealing quantum computers. for a job pool of $ k $ jobs, $ \ mathcal { o } ( k ^ 2 ) $ binary variables... | arxiv:2309.16473 |
a scheme is derived for learning connectivity in spiking neural networks. the scheme learns instantaneous firing rates that are conditional on the activity in other parts of the network. the scheme is independent of the choice of neuron dynamics or activation function, and network architecture. it involves two simple, ... | arxiv:1502.05777 |
it is well known that the time average or the center of mass for generic orbits of the standard tent map is 0. 5. in this paper we show some interesting properties of the exceptional orbits, including periodic orbits, orbits without mass center, and orbits with mass centers different from 0. 5. we prove that for any po... | arxiv:0802.2445 |
comment on " liquids on topologically nanopatterned surfaces " by o. gang et al, phys. rev. lett. 95, 217801 ( 2005 ). see also an erratum published by o. gang et al ( phys rev lett, to appear ) | arxiv:0704.2150 |
we report an experimental approach to making multifilament coated conductors with low losses in applied time - varying magnetic field. previously, the multifilament conductors obtained for that purpose by laser ablation suffered from high coupling losses. here we report how this problem can be solved. when the substrat... | arxiv:cond-mat/0605313 |
the simplest gauge invariant models of inflationary magnetogenesis are known to suffer from the problems of either large backreaction or strong coupling, which make it difficult to self - consistently achieve cosmic magnetic fields from inflation with a field strength larger than $ 10 ^ { - 32 } g $ today on the $ \ mp... | arxiv:1305.7151 |
conventional wisdom dictates that $ \ mathbb { z } _ n $ factors in the integral cohomology group $ h ^ p ( x _ n, \ mathbb { z } ) $ of a compact manifold $ x _ n $ cannot be computed via smooth $ p $ - forms. we revisit this lore in light of the dimensional reduction of string theory on $ x _ n $, endowed with a $ g ... | arxiv:2306.14959 |
this thesis discusses the development of technologies for the automatic resynthesis of music recordings using digital synthesizers. first, the main issue is identified in the understanding of how music information processing ( mip ) methods can take into consideration the influence of the acoustic context on the music ... | arxiv:2205.00941 |
recent hst observations of a large sample of globular clusters reveal that every cluster contains between 40 and 400 blue stragglers. the population does not correlate with either stellar collision rate ( as would be expected if all blue stragglers were formed via collisions ) or total mass ( as would be expected if al... | arxiv:astro-ph/0401502 |
atomic physics has greatly advanced quantum science, mainly due to the ability to control the position and internal quantum state of atoms with high precision, often at the quantum limit. the dominant tool for this is laser light, which can structure and localize atoms in space ( e. g., in optical tweezers, optical lat... | arxiv:2302.07209 |
a rad c + + builder ' s 6. 0 code cedv under windows xp has been designed for visualizing data obtained from heavy - ion - induced complete fusion reactions at the main u - 400 cyclotron of flnr. the main purpose of the code is processing the data from the experiments aimed to at studying chemical properties of she. da... | arxiv:1506.01858 |
the dynamics of droplet fragmentation in turbulence is described in the kolmogorov - hinze framework. yet, a quantitative theory is lacking at higher concentrations when strong interactions between the phases and coalescence become relevant, which is common in most flows. here, we address this issue through a fully - c... | arxiv:2206.08055 |
here we present in a single essay a combination and completion of the several aspects of the problem of randomness of individual objects which of necessity occur scattered in our texbook " an introduction to kolmogorov complexity and its applications " ( m. li and p. vitanyi ), 2nd ed., springer - verlag, 1997. | arxiv:math/0110086 |
for a large family of nonautonomous scalar - delayed differential equations used in population dynamics, some criteria for permanence are given, as well as explicit upper and lower bounds for the asymptotic behavior of solutions. the method described here is based on comparative results with auxiliary monotone systems.... | arxiv:1404.2566 |
resonant scattering of energetic protons off magnetic irregularities is the main process in cosmic ray diffusion. the typical theoretical description uses alfven waves in the low frequency limit. we demonstrate that the usage of particle - in - cell ( pic ) simulations for particle scattering is feasible. the simulatio... | arxiv:1404.0499 |
multimodal recommendation systems ( mmrs ) have received considerable attention from the research community due to their ability to jointly utilize information from user behavior and product images and text. previous research has two main issues. first, many long - tail items in recommendation systems have limited inte... | arxiv:2407.12338 |
we comment on the paper of murray, browne, and mcnicholas ( 2017 ), who proposed mixtures of skew distributions, which they termed hidden truncation hyperbolic ( hth ). they recently made a clarification ( murray, browne, mcnicholas, 2019 ) concerning their claim that the so - called cfust distribution is a special cas... | arxiv:1904.12057 |
we construct gravity solutions describing renormalization group flows relating relativistic and non - relativistic conformal theories. we work both in a simple phenomenological theory with a massive vector field, and in an n = 4, d = 6 gauged supergravity theory, which can be consistently embedded in string theory. the... | arxiv:1108.3067 |
through a long - period analysis of the inter - temporal relations between the french markets for credit default swaps ( cds ), shares and bonds between 2001 and 2008, this article shows how a financial innovation like cds could heighten financial instability. after describing the operating principles of credit derivat... | arxiv:0911.4039 |
using the relativistic transport model ( art ), we predict the energy dependence of the stopping power, maximum baryon and energy densities, the population of resonance matter as well as the strength of the transverse and radial flow for central au + au reactions at beam momentum from 2 to 12 gev / c available at brook... | arxiv:nucl-th/9601041 |
tone mapping is a commonly used technique that maps the set of colors in high - dynamic - range ( hdr ) images to another set of colors in low - dynamic - range ( ldr ) images, to fit the need for print - outs, lcd monitors and projectors. unfortunately, during the compression of dynamic range, the overall contrast and... | arxiv:1809.06036 |
a grand challenge in materials research is identifying the relationship between composition and performance. herein, we explore this relationship for magnetic properties, specifically magnetic saturation ( m $ _ s $ ) and magnetic anisotropy energy ( mae ) of ferrites. ferrites are materials derived from magnetite ( wh... | arxiv:2309.09754 |
we present the first experimental search for the rare charm decay $ d ^ { 0 } \ to \ pi ^ { 0 } \ nu \ bar { \ nu } $. it is based on an $ e ^ + e ^ - $ collision sample consisting of $ 10. 6 \ times10 ^ { 6 } $ pairs of $ d ^ 0 \ bar { d } ^ 0 $ mesons collected by the besiii detector at $ \ sqrt { s } $ = 3. 773 gev,... | arxiv:2112.14236 |
recommendation systems play a crucial role in various domains, suggesting items based on user behavior. however, the lack of transparency in presenting recommendations can lead to user confusion. in this paper, we introduce data - level recommendation explanation ( dre ), a non - intrusive explanation framework for bla... | arxiv:2404.06311 |
obesity is a serious public health concern world - wide, which increases the risk of many diseases, including hypertension, stroke, and type 2 diabetes. to tackle this problem, researchers across the health ecosystem are collecting diverse types of data, which includes biomedical, behavioral and activity, and utilizing... | arxiv:1809.07828 |
modern systems mitigate rowhammer using victim refresh, which refreshes the two neighbours of an aggressor row when it encounters a specified number of activations. unfortunately, complex attack patterns like half - double break victim - refresh, rendering current systems vulnerable. instead, recently proposed secure r... | arxiv:2308.14907 |
we have analysed four asca observations ( 1994 - - 1995, 1996 - - 1997 ) and three xmm - newton observations ( 2005 ) of this source, in all of which the source is in high / soft state. we modeled the continuum spectra with relativistic disk model kerrbb, estimated the spin of the central black hole, and constrained th... | arxiv:0704.0734 |
in 1959 fejes t \ ' oth posed a conjecture that the sum of pairwise non - obtuse angles between $ n $ unit vectors in $ \ mathbb s ^ d $ is maximized by periodically repeated elements of the standard orthonormal basis. we obtain new improved upper bounds for this sum, as well as for the corresponding energy integral. w... | arxiv:1801.07837 |
cosmological arguments proving that the universe is dominated by invisible non - baryonic matter are reviewed. possible physical candidates for dark matter particles are discussed. a particular attention is paid to non - compensated remnants of vacuum energy, to the question of stability of super - heavy relics, cosmol... | arxiv:hep-ph/9910532 |
and support its extensive public art and outdoor sculpture collection. the mit museum was founded in 1971 and collects, preserves, and exhibits artifacts significant to the culture and history of mit. the museum now engages in significant educational outreach programs for the general public, including the annual cambri... | https://en.wikipedia.org/wiki/Massachusetts_Institute_of_Technology |
first it is shown that the tree amplitude for pion pion scattering in the minimal linear sigma model has an exact expression which is proportional to a geometric series in the quantity ( s - $ m _ \ pi ^ 2 $ ) / ( $ m _ b ^ 2 - m _ \ pi ^ 2 $ ), where $ m _ b $ is the sigma mass which appears in the lagrangian and is t... | arxiv:0904.2161 |
the single production of leptoquarks in $ e ^ + e ^ - $, $ e \ gamma $ and $ \ gamma \ gamma $ linear colliders is discussed. we show that these new particles could be seen in such machines even if their mass is close to the kinematic limit. ( invited talk given by g. b. at the ` ` workshop on physics and experiments a... | arxiv:hep-ph/9309243 |
non - orthogonal multiple access ( noma ) schemes have been proposed for the next generation of mobile communication systems to improve the access efficiency by allowing multiple users to share the same spectrum in a non - orthogonal way. due to the strong co - channel interference among mobile users introduced by noma... | arxiv:1610.09465 |
- 34 } \ { \ rm cm ^ 2 } \ ( m _ { \ rm dm } / { \ rm gev } ) $, $ \ sigma _ { { \ rm dm } \ text { - } \ nu, 2 } < 10 ^ { - 46 } \ { \ rm cm ^ 2 } \ ( m _ { \ rm dm } / { \ rm gev } ) ( e _ \ nu / e _ { \ nu } ^ 0 ) ^ 2 $ and $ \ sigma _ { { \ rm dm } \ text { - } \ nu, 4 } < 7 \ times 10 ^ { - 59 } \ { \ rm cm ^ 2 } ... | arxiv:2305.01913 |
we formulate a three - dimensional semi - classical model to address triple and double ionization in three - electron atoms driven by intense infrared laser pulses. during time propagation, our model fully accounts for the coulomb singularities, the magnetic field of the laser pulse and for the motion of the nucleus at... | arxiv:2201.12160 |
in video super - resolution, the spatio - temporal coherence between, and among the frames must be exploited appropriately for accurate prediction of the high resolution frames. although 2d convolutional neural networks ( cnns ) are powerful in modelling images, 3d - cnns are more suitable for spatio - temporal feature... | arxiv:1812.09079 |
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