article_id stringlengths 9 15 | abstract_text stringlengths 390 2.07k | token_count int64 100 300 |
|---|---|---|
hep-th0212326 | classical geometry of de sitter spacetime is reviewed in arbitrary dimensions . topics include coordinate systems , geodesic motions , and penrose diagrams with detailed calculations . = 16.5 cm -1.85 cm -2 cm = .22 in hep - th/0212326 * classical geometry of de sitter spacetime : + an introductory review * + yoonbai k... | 120 |
cond-mat0511741 | we present unrestricted hartree fock method coupled with configuration interaction ( ci ) method ( urhf - ci ) suitable for the calculation of ground and excited states of large number of electrons localized by complex gate potentials in quasi - two - dimensional quantum dot molecules . the method employs real space fi... | 152 |
nucl-ex0006012 | the reaction @xmath0si + @xmath1ta has been studied at e@xmath2=125 and 135 mev . coincidences between high energy particles and various x- and @xmath3-rays from abnormally long - lived states were observed . e.g. 7.8 - 8.6 mev @xmath4-particles with @xmath3-rays of a superdeformed band , 5.1 - 5.5 mev @xmath4-particle... | 148 |
1011.5706 | it has been established for some time that high - power pump can trap a probe beam of lower intensity that is simultaneously propagating in a kerr - type optical medium , inducing a focusing of the probe with the emergence of modes displaying solitonic properties . to understand the mechanism by which such self - susta... | 239 |
1003.3696 | we provide an extension to lattice systems of the reptation quantum monte carlo ( rqmc ) algorithm , originally devised for continuous hamiltonians . for systems affected by the sign problem , a method to systematically improve upon the so - called fixed - node approximation is also proposed . the generality of the met... | 135 |
chao-dyn9611017 | chaotic deterministic dynamics of a particle can give rise to diffusive brownian motion . in this paper , we compute analytically the diffusion coefficient for a particular two - dimensional stochastic layer induced by the kicked harper map . the variations of the transport coefficient as a parameter is varied are anal... | 113 |
1108.2632 | we propose a novel algorithm for compressive imaging that exploits both the sparsity and persistence across scales found in the 2d wavelet transform coefficients of natural images . like other recent works , we model wavelet structure using a hidden markov tree ( hmt ) but , unlike other works , ours is based on loopy ... | 148 |
1008.3710 | we give an exponential upper and a quadratic lower bound on the number of pairwise non - isotopic simple closed curves can be placed on a closed surface of genus @xmath0 such that any two of the curves intersects at most once . although the gap is large , both bounds are the best known for large genus . in genus one an... | 101 |
1101.3892 | a theoretical model of a single molecule coupled to many vibronic modes is presented . at low energies , transport is dominated by electron - vibron processes where transfer of an electron through the dot is accompanied by the excitation or emission of quanta ( vibrons ) . because the frequency of the @xmath0th mode is... | 149 |
1112.6212 | adaptive networks rely on in - network and collaborative processing among distributed agents to deliver enhanced performance in estimation and inference tasks . information is exchanged among the nodes , usually over noisy links . the combination weights that are used by the nodes to fuse information from their neighbo... | 203 |
hep-th0104088 | this paper aims to present explicit photon - like ( 3 + 1 ) spatially finite soliton solutions of screw type to the vacuum field equations of extended electrodynamics ( eed ) in relativistic formulation . we begin with emphasizing the need for spatially finite soliton modelling of microobjects . then we briefly comment... | 184 |
0805.4177 | in this work , we look for possible new physics effects on the electromagnetic charge and anapole form factors , @xmath0 and @xmath1 , for a massless dirac neutrino , when these quantities are calculated in the context of an effective electroweak yang - mills theory , which induces the most general @xmath2invariant lor... | 212 |
astro-ph9812399 | we present here the extragalactic background light ( ebl ) predicted by semi - analytic models of galaxy formation , and show how measurements of the absorption of gamma rays of @xmath0 tev energies via pair production on the ebl can probe cosmology and the formation of galaxies . semi - analytic models permit a physic... | 190 |
physics9812053 | it recently has been demonstrated that signals conveyed by evanescent modes can travel faster than light . in this report some special features of signals are introduced and investigated , for instance the fundamental property that signals are frequency band limited . evanescent modes are characterized by extraordinary... | 100 |
1609.04276 | recently , zhong et al . [ phys . rev . a 87 , 022337(2013 ) ] investigated the dynamics of quantum fisher information ( qfi ) in the presence of decoherence . we here reform their results and propose two schemes to enhance and preserve the qfis for a qubit system subjected to a decoherence noisy environment by applyin... | 217 |
1203.2047 | we report that the ionic - liquid gating of bulk single crystals of a topological insulator can control the type of the surface carriers and even results in ambipolar transport . this was made possible by the use of a highly bulk - insulating bisbtese@xmath0 system where the chemical potential is located close to both ... | 137 |
0704.2436 | for many years various asymmetrical profiles of different spectral lines emitted from solar flares have been frequently observed . these asymmetries or line shifts are caused predominantly by vertical mass motions in flaring layers and they provide a good diagnostics for plasma flows during solar flares . there are man... | 234 |
1011.5474 | we analyze the dynamical processes behind delayed double ionization of atoms subjected to strong laser pulses . using reduced models , we show that these processes are a signature of hamiltonian chaos which results from the competition between the laser field and the coulomb attraction to the nucleus . in particular , ... | 143 |
1311.0567 | strong electron correlation effects in the photophysics of quasi - one - dimensional @xmath0-conjugated organic systems such as polyenes , polyacetylenes , polydiacetylenes , etc . , have been extensively studied . far less is known on correlation effects in two - dimensional @xmath0-conjugated systems . here we presen... | 126 |
astro-ph0602510 | we present the results of a systematic exploration of an alternative evolutionary scenario to form double neutron - star binaries , first proposed by brown ( 1995 ) , which does not involve a neutron star passing through a common envelope . in this scenario , the initial binary components have very similar masses , and... | 157 |
1503.04970 | contrary to the common lore based on naive dimensional analysis , the seesaw scale for neutrino masses can be _ naturally _ in the tev range , with small parameters coming from radiative corrections . we present one such class of type - i seesaw models , based on the left - right gauge group @xmath0 realized at the tev... | 215 |
1409.3259 | in a quasi - one - dimensional system the particles remain ordered from left to right allowing the association of a volume element to the particle which on average resides there . thus the properties of that single particle can give the local densities in the volume element . with reservoirs of different temperatures c... | 123 |
1006.5820 | heavy ion reactions and other collective dynamical processes are frequently described by different theoretical approaches for the different stages of the process , like initial equilibration stage , intermediate locally equilibrated fluid dynamical stage and final freeze - out stage . for the last stage the best known ... | 283 |
hep-ph9805427 | we work out the thermodynamic equations for the decays and scatterings of heavy majorana neutrinos including the constraints from unitarity . the boltzmann equations depend on the cp asymmetry parameter which contains both , a self - energy and a vertex correction . at thermal equilibrium there is no net lepton asymmet... | 117 |
hep-th9610166 | we construct 4-dimensional cosmological frw models by compactifying a black 5-brane solution of type iib supergravity , which carries both magnetic ns - ns - charge and rr - charge . the influence of nontrivial rr - fields on the dynamics of the cosmological models is investigated . = -1 cm -0.3 cm .2 cm lmu - tpw 96 -... | 115 |
cond-mat0312476 | a diffusion process on complex networks is introduced in order to uncover their large scale topological structures . this is achieved by focusing on the slowest decaying diffusive modes of the network . the proposed procedure is applied to real - world networks like a friendship network of known modular structure , and... | 171 |
0808.1375 | the fiber bundle model describes a collection of elastic fibers under load . the fibers fail sucessively and for each failure , the load distribution among the surviving fibers changes . even though very simple , this model captures the essentials of failure processes in a large number of materials and settings . we pr... | 141 |
1611.08511 | in supersymmetric models with radiatively - driven naturalness and light higgsinos , the top squarks may lie in the 0.53 tev range and thus only a fraction of natural parameter space is accessible to lhc searches . we outline the range of top squark and lightest susy particle masses preferred by electroweak naturalness... | 265 |
astro-ph0110409 | we present results of _ hubble space telescope _ ( hst ) observations of the radio galaxy 3c 244.1 . the broadband f702w ( _ r _ ) and f555w ( _ v _ ) images ( wfpc2/pc ) show an elliptical galaxy and gaseous filaments and blobs surrounding it . in the narrow - band ramp filter , dominated by [ o iii]@xmath0 , these fi... | 174 |
1009.5336 | we have incorporated the oblate distortion of the shape of the star due to the stellar rotation , which modifies the finite disk correction factor ( @xmath0 ) in the m - cak hydrodynamical model . we implement a simplified version for the @xmath0 allowing us to solve numerically the non linear m - cak momentum equation... | 182 |
0808.1133 | we prove trace inequalities for a self - adjoint operator on an abstract hilbert space . these inequalities lead to universal bounds on spectral gaps and on moments of eigenvalues @xmath0 that are analogous to those known for schrdinger operators and the dirichlet laplacian , on which the operators of interest are mode... | 128 |
nucl-th0311033 | an hallmark of present - day dyson - schwinger equation applications in hadron physics is the existence of a systematic and symmetry preserving truncation scheme . this enables the proof of exact results ; e.g. , the leptonic decay constant of every pseudoscalar meson except the pion vanishes in the chiral limit . calc... | 155 |
1109.3828 | pure thermodynamical considerations to describe the entropic evolution of the universe seem to violate the second law of thermodynamics . this suggests that the gravitational field itself has entropy . in this paper we expand recent work done by rudjord , gr@xmath0n and sigbj@xmath0rn where they suggested a method to c... | 163 |
0904.0060 | we describe how the effect of charge noise on a pair of spins coupled via the exchange interaction can be calculated by modelling charge fluctuations as a random telegraph noise process using probability density functions . we develop analytic expressions for the time dependent superoperator of a pair of spins as a fun... | 111 |
cond-mat9411046 | the critical behaviour of a bond - disordered ashkin - teller model on a square lattice is investigated by intensive monte - carlo simulations . a duality transformation is used to locate a critical plane of the disordered model . this critical plane corresponds to the line of critical points of the pure model , along ... | 231 |
physics0311077 | using a lattice string model , a number of peculiar excitation situations related to non - propagating excitations and non - radiating sources are demonstrated . external fields can be used to trap excitations locally but also lead to the ability to steer such excitations dynamically as long as the steering is slower t... | 110 |
1207.3450 | to solve numerically boundary value problems for parabolic equations with mixed derivatives , the construction of difference schemes with prescribed quality faces essential difficulties . in parabolic problems , some possibilities are associated with the transition to a new formulation of the problem , where the fluxes... | 159 |
astro-ph0303298 | we use recent results from the wilkinson microwave anisotropy probe ( wmap ) for the locations of peaks and troughs of the cosmic microwave background ( cmb ) power spectrum , together with constraints from large - scale structure , to study a quintessence model in which the pure exponential potential is modified by a ... | 140 |
1508.05093 | a macronova ( or kilonova ) was observed as an infrared excess several days after short gamma - ray burst , grb 130603b . although the @xmath0-process radioactivity is widely discussed as an energy source , it requires huge mass of ejecta from a neutron star ( ns ) binary merger . we propose a new model that the x - ra... | 182 |
1509.00836 | motivated by damage due to heating in sensor operation , we consider the throughput optimal offline data scheduling problem in an energy harvesting transmitter such that the resulting temperature increase remains below a critical level . we model the temperature dynamics of the transmitter as a linear system and determ... | 172 |
hep-ph0005234 | several new effects have been investigated in recent analyses of supersymmetric dark matter . these include the effects of the uncertainties of wimp velocity distributions , of the uncertainties of quark densities , of large cp violating phases , of nonuniversalities of the soft susy breaking parameters at the unificat... | 166 |
hep-ph9901281 | we derive an equation determining the small-@xmath0 evolution of the @xmath1 structure function of a large nucleus which includes all multiple pomeron exchanges in the leading logarithmic approximation using mueller s dipole model @xcite . we show that in the double leading logarithmic limit this evolution equation red... | 106 |
cond-mat0510257 | we suggest a theory of internal coherent tunnelling in the pseudogap region where the applied voltage is below the free electron gap . we consider quasi 1d systems where the gap is originated by a lattice dimerization ( peierls or ssh effect ) like in polyacethylene , as well as low symmetry 1d semiconductors . results... | 166 |
0902.0033 | by applying a magnetic field whose zeeman energy exceeds the kondo energy by an order of magnitude the ground state of the friedel - anderson impurity is a magnetic state . in recent years the author introduced the friedel artificially inserted resonance ( fair ) method to investigate impurity properties . within this ... | 221 |
1502.03542 | we present measurements of the critical velocity for vortex shedding in a highly oblate bose - einstein condensate with a moving repulsive gaussian laser beam . as a function of the barrier height @xmath0 , the critical velocity @xmath1 shows a dip structure having a minimum at @xmath2 , where @xmath3 is the chemical p... | 155 |
hep-ph0610439 | in these proceedings we present the results for lepton flavour violating tau and muon decays within the susy seesaw scenario . specifically , we consider the constrained minimal supersymmetric standard model extended by three right handed neutrinos , @xmath0 and their corresponding susy partners , @xmath1 , ( @xmath2 )... | 212 |
1403.3776 | cells generally convert external nutrient resources to support metabolism and growth . understanding the thermodynamic efficiency of this conversion is essential to determine the general characteristics of cellular growth . using a simple protocell model with catalytic reaction dynamics to synthesize the necessary enzy... | 176 |
0906.2654 | employing instanton technique we evaluate equilibrium persistent current ( pc ) produced by a quantum particle moving in a periodic potential on a ring and interacting with a dissipative environment formed by diffusive electron gas . the model allows for detailed non - perturbative analysis of interaction effects and d... | 111 |
0805.3613 | ngc 6782 is an early - type barred spiral galaxy exhibiting a rich and complex morphology with multiple ring patterns . to provide a physical understanding of its structure and kinematical properties , two - dimensional hydrodynamical simulations have been carried out . numerical calculations reveal that the striking f... | 203 |
1507.06650 | the fundamental rovibrational band of co near 4.7@xmath0 m is a sensitive tracer of the presence and location of molecular gas in the planet - forming region of protoplanetary disks at 0.0110au . we present a new analysis of a high - resolution spectral survey ( r@xmath196,000 , or @xmath2 ) of co rovibrational lines f... | 292 |
hep-ph0601170 | in this work we study an so(10 ) gut model with minimum higgs representations belonging only to the * 210 * and * 16 * dimensional representations of so(10 ) . we add a singlet fermion @xmath0 in addition to the usual * 16 * dimensional representation containing quarks and leptons . there are no higgs bi - doublets and... | 223 |
0805.0160 | a brief review of the @xmath0 dependence of the dihadron correlations from rhic is presented . we attempt to construct a consistent picture that can describe the data as a whole , focusing on the following important aspects , 1 ) the relation between jet fragmentation of survived jet and medium response to quenched jet... | 103 |
1111.5599 | since the discovery of the first exoplanet , those most adequate for life to begin and evolve have been sought . due to observational bias , however , most of the discovered planets so far are gas giants , precluding their habitability . if these hot jupiters are located in the habitable zone of their host stars , and ... | 261 |
astro-ph9611124 | we have mapped two molecular clouds at ( @xmath0 ) = ( @xmath1 ) and ( @xmath0 ) = ( @xmath2 ) in 21-cm line and continuum emission . these clouds show unusually large velocity dispersions of more than 100 ( fwhm ) which has also been seen in @xmath3co , @xmath4 , and cs emissions . this dispersion is roughly an order ... | 199 |
cond-mat0308126 | we present results for the optical absorption spectra of small - diameter single - wall carbon and boron nitride nanotubes obtained by _ ab initio _ calculations in the framework of time - dependent density functional theory . we compare the results with those obtained for the corresponding layered structures , i.e. th... | 198 |
0711.2101 | distribution and kinematics of molecular gas in the central region of the barred spiral galaxy maffei 2 were investigated using a data set of @xmath0co(10 ) , @xmath0co(21 ) , cs(21 ) lines and 103 ghz continuum . we found that the offset ridges along the kpc - scale bar continue to the central spiral structure embedde... | 197 |
1507.06841 | nowadays , to facilitate the communication and cooperation among employees , a new family of online social networks has been adopted in many companies , which are called the `` enterprise social networks '' ( esns ) . esns can provide employees with various professional services to help them deal with daily work issues... | 259 |
1510.00833 | the aim of this paper is to give a description of the poisson furstenberg boundary of random walks on non - amenable baumslag solitar groups . after a short introduction to baumslag solitar groups and their geometry , we change our focus to random walks on these groups . the poisson furstenberg boundary is a probabilis... | 162 |
astro-ph0502079 | we describe the data reduction algorithms for the multiband imaging photometer for spitzer ( mips ) instrument . these algorithms were based on extensive preflight testing and modeling of the si : as ( 24 ) and ge : ga ( 70 and 160 ) arrays in mips and have been refined based on initial flight data . the behaviors we d... | 252 |
1507.01480 | we consider the 2d quasi - periodic scattering problem in optics , which has been modelled by a boundary value problem governed by helmholtz equation with transparent boundary conditions . a spectral collocation method and a tensor product spectral method are proposed to numerically solve the problem on rectangles . th... | 124 |
0907.4014 | the synchrotron self - compton ( ssc ) emission from gamma - ray burst ( grb ) forward shock can extend to the very - high - energy ( vhe ; @xmath0100 gev ) range . such high energy photons are rare and are attenuated by the cosmic infrared background before reaching us . in this work , we discuss the prospect to detec... | 168 |
cond-mat9911463 | we investigate the effect of a finite temperature on the behavior of logic circuits based on the principle of quantum cellular automata ( qca ) and of ground state computation . in particular , we focus on the error probability for a wire of qca cells that propagates a logic state . a numerical model and an analytical ... | 113 |
hep-th0607068 | we study the evolution of scalar curvature perturbations in a brane - world inflation model in a 5d anti - de sitter spacetime . the inflaton perturbations are confined to a 4d brane but they are coupled to the 5d bulk metric perturbations . we numerically solve full coupled equations for the inflaton perturbations and... | 182 |
1010.0549 | the evolution of electromagnetic and massless dirac perturbations in the space - time geometry of kehagias - sfetsos(ks ) black hole in the deformed hoava - lifshitz(hl ) gravity is investigated and the associated quasinormal modes(qnms ) are evaluated from time domain integration data . we find a considerable deviatio... | 143 |
cond-mat0411397 | based on the exact numerical simulation and physical analysis , we have demonstrated all - angle single - beam left - handed behavior and superlens for both te and tm modes in a two - dimensional coated photonic crystals . the imaging behaviors by two - dimensional photonic - crystal - based superlens have been investi... | 156 |
1604.07106 | = 0.6 cm * abstract * we extend firstly the regular phantom black hole solution to a slowly rotating black hole case and find that the phantom field depresses the angular velocity of the event horizon and suppresses the super - radiation of black hole . we also probe the dependence of quasi - periodic oscillations freq... | 155 |
1109.3680 | quantum phases provide us with important information for understanding the fundamental properties of a system . however , the observation of quantum phases , such as berry s phase and the sign of the matrix element of the hamiltonian between two non - equivalent localized orbitals in a tight - binding formalism , has b... | 243 |
astro-ph0701830 | based on fors2-vlt long - slit spectroscopy , the analysis of the central absorption line indices of 9 s0 galaxies in the fornax cluster is presented . central indices correlate with central velocity dispersions ( @xmath0 ) as observed in ellipticals ( e ) . however , the stellar population properties of these s0s indi... | 167 |
hep-th9903185 | domain wall - type solution with oscillating thickness in a real , scalar field model is investigated with the help of a polynomial approximation . we propose a simple extension of the polynomial approximation method . in this approach we calculate higher order corrections to the planar domain wall solution , find that... | 112 |
astro-ph0502511 | we consider the population of black widow pulsars ( bwps ) . the large majority of these are members of globular clusters . for minimum companion masses @xmath00.1m@xmath1 , adiabatic evolution and consequent mass loss under gravitational radiation appear to provide a coherent explanation of all observable properties .... | 145 |
1305.5543 | in this work i summarize a model of binary stellar evolution involving case c mass transfer followed by a common envelope that strips away the hydrogen from the core of the primary star at the cost of shrinking the orbital separation and then , through tidal interaction , spins it up . this model is then used to produc... | 211 |
1412.0412 | it is well known that a triangulation of a closed 2-manifold is tight with respect to a field of characteristic two if and only if it is neighbourly ; and it is tight with respect to a field of odd characteristic if and only if it is neighbourly and orientable . no such characterization of tightness was previously know... | 273 |
hep-ph0003167 | we show how one may define baryon constituent quarks in a rigorous manner , given physical assumptions that hold in the large-@xmath0 limit of qcd . this constituent picture gives rise to an operator expansion that has been used to study large-@xmath0 baryon observables ; here we apply it to the case of charge radii of... | 103 |
cond-mat0612387 | recently some experimental evidences have been obtained in favour of the existence of the inhomogeneous fulde - ferrell - larkin - ovchinnikov ( fflo ) superconducting state in heavy - fermion superconductor cecoin@xmath0 and organic superconductor @xmath1-(bets)@xmath2fecl@xmath3 . however the unambiguous identificati... | 116 |
1605.09244 | an euclidean greedy embedding of a graph is a straight - line embedding in the plane , such that for every pair of vertices @xmath0 and @xmath1 , the vertex @xmath0 has a neighbor @xmath2 with smaller distance to @xmath1 than @xmath0 . this drawing style is motivated by greedy geometric routing in wireless sensor netwo... | 169 |
quant-ph0208040 | it is shown that coherent spin motion of electron hole pairs localized in band gap states of silicon can influence charge carrier recombination . based on this effect , a readout concept for silicon based solid state spin quantum computers as proposed by kane is suggested . the @xmath0p quantum bit ( qbit ) is connecte... | 183 |
1411.4893 | we use an exact transfer - matrix approach to compute the equilibrium properties of a system of hard disks of diameter @xmath0 confined to a two - dimensional channel of width @xmath1 at constant longitudinal applied force . at this channel width , which is sufficient for next - nearest - neighbor disks to interact , t... | 246 |
0707.3847 | we study scaling relations of compressible isothermal strongly magnetized turbulence using numerical simulations with resolution 512@xmath0 . we find a good correspondence of our results with the fleck ( 1996 ) model of compressible hydrodynamic turbulence . in particular , we find that the density - weighted velocity ... | 282 |
0912.0905 | kondo systems are usually described by the interaction of strong correlation induced local moment with the highly itinerant conduction electrons . here , we study the role of electron correlations among conduction electrons in the electronic structure of a kondo lattice compound , ce@xmath0cosi@xmath1 , using high reso... | 205 |
1203.5181 | we describe @xmath0-mle , a fast and efficient local search algorithm for learning finite statistical mixtures of exponential families such as gaussian mixture models . mixture models are traditionally learned using the expectation - maximization ( em ) soft clustering technique that monotonically increases the incompl... | 282 |
1308.2171 | we study the relationship between decaying active region magnetic fields , coronal holes and the global coronal magnetic structure using global oscillations network group ( gong ) synoptic magnetograms , solar terrestrial relations observatory ( stereo ) extreme ultra - violet ( euv ) synoptic maps and coronal potentia... | 268 |
1011.1613 | based on analysis of the annual averaged relative sunspot number ( asn ) during 1700 2009 , 3 kinds of solar cycles are confirmed : the well - known 11-yr cycle ( schwabe cycle ) , 103-yr secular cycle ( numbered as g1 , g2 , g3 , and g4 , respectively since 1700 ) ; and 51.5-yr cycle . from similarities , an extrapola... | 230 |
gr-qc0209052 | this talk will describe some recent results @xcite regarding the problem of uniqueness in the large ( also known as _ strong cosmic censorship _ ) for the initial value problem in general relativity . the interest in the issue of uniqueness in this context stems from its relation to the validity of the principle of det... | 259 |
1505.06617 | graph polynomials which are definable in monadic second order logic ( @xmath0 ) on the vocabulary of graphs are fixed - parameter tractable ( @xmath1 ) with respect to clique - width . in contrast , graph polynomials which are definable in @xmath0 on the vocabulary of hypergraphs are fixed - parameter tractable with re... | 161 |
hep-lat0204028 | we develop an analytical approach for non - abelian gauge models within the plaquette representation where the plaquette matrices play the role of the fundamental degrees of freedom . we start from the original batrouni formulation and show how it can be modified in such a way that each non - abelian bianchi identity c... | 113 |
1311.4545 | democracy among the same type of particles is a useful paradigm in studying masses and interactions of particles with supersymmetry(susy ) or without susy . this simple idea predicts the presence of massless particles . we attempt to use one of these massless pseudoscalar particles as generating the cosmological dark e... | 185 |
astro-ph9812065 | we present infrared photometry and optical and infrared spectroscopy of the recently - discovered , extremely luminous nearby quasar pds 456 . a number of broad emission features are seen in the near - infrared which we are unable to identify . we measure a more accurate redshift from a narrow forbidden emission line a... | 121 |
astro-ph0305437 | the sirtf nearby galaxy survey is a comprehensive infrared imaging and spectroscopic survey of 75 nearby galaxies . its primary goal is to characterize the infrared emission of galaxies and their principal infrared - emitting components , across a broad range of galaxy properties and star formation environments . sings... | 191 |
1011.6280 | the conformal cosmological model presented by mannheim predicts a negative value for the effective gravitational constant , @xmath0 . it also involves a scalar field , @xmath1 , which is treated classically . in this paper we point out that a classical treatment of @xmath1 is inappropriate , because the hamiltonian is ... | 111 |
0912.4546 | decoding sparse quantum codes can be accomplished by syndrome - based decoding using a belief propagation ( bp ) algorithm . we significantly improve this decoding scheme by developing a new feedback adjustment strategy for the standard bp algorithm . in our feedback procedure , we exploit much of the information from ... | 157 |
1304.4627 | we study the optimality of linear precoding for the two - receiver multiple - input multiple - output ( mimo ) gaussian broadcast channel ( bc ) with confidential messages . secret dirty - paper coding ( s - dpc ) is optimal under an input covariance constraint , but there is no computable secrecy capacity expression f... | 235 |
0801.0553 | ricci flow deformation of cosmological initial data sets in general relativity is a technique for generating families of initial data sets which potentially would allow to interpolate between distinct spacetimes . this idea has been around since the appearance of the ricci flow on the scene , but it has been difficult ... | 154 |
nlin0012060 | a version of scattering theory that was developed many years ago to treat nuclear scattering processes , has provided a powerful tool to study universality in scattering processes involving open quantum systems with underlying classically chaotic dynamics . recently , it has been used to make random matrix theory predi... | 127 |
0808.2290 | we consider a model with competing double - exchange ( ferromagnetic ) and super - exchange ( anti - ferromagnetic ) interactions in the regime where phase separation takes place . the presence of a long range coulomb interaction frustrates a macroscopic phase separation , and favors microscopically inhomogeneous confi... | 131 |
cond-mat0202364 | there is a growing interest in the relation between bose - einstein condensation ( bec ) and superfluidity . a bose system confined in random media such as porous glass is suitable for studying this relation because bec and superfluidity can be suppressed and controlled in such a disordered environment . however , it i... | 239 |
1304.3571 | i develop a kinetic mechanism to explain chain folding in polymer crystallization which is based on the competition between the formation of stems , which is due to frequent occupations of trans states along the chains in the supercooled polymer melt , and the random coil structure of the polymer chains . setting equal... | 158 |
cond-mat9901301 | we study associative memory of an oscillator neural network with distributed native frequencies . the model is based on the use of the hebb learning rule with random patterns ( @xmath0 ) , and the distribution function of native frequencies is assumed to be symmetric with respect to its average . although the system wi... | 166 |
1010.0584 | by introducing the thermo entangled state representation , we convert the calculation of wigner function ( wf ) of density operator to an overlap between `` two pure '' states in a two - mode enlarged fock space . furthermore , we derive a new wf evolution formula of any initial state in self - kerr medium with photon ... | 115 |
1001.1240 | the effects of bond randomness on the phase diagram and critical behavior of the square lattice ferromagnetic blume - capel model are discussed . the system is studied in both the pure and disordered versions by the same efficient two - stage wang - landau method for many values of the crystal field , restricted here i... | 221 |
hep-ph9604402 | we extend a previous landau - gauge study of subtractive renormalization of the fermion propagator dyson - schwinger equation ( dse ) in strong - coupling , quenched qed@xmath0 to _ arbitrary _ covariant gauges . we use the fermion - photon proper vertex proposed by curtis and pennington with an additional correction t... | 112 |
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.