article_id stringlengths 9 15 | abstract_text stringlengths 390 2.07k | token_count int64 100 300 |
|---|---|---|
astro-ph9708262 | a rarity among supernova , sn 1993j in m81 can be studied with high spatial resolution . its radio power and distance permit vlbi observations to monitor the expansion of its angular structure . this radio structure was previously revealed to be shell - like and to be undergoing a self - similar expansion at a constant... | 113 |
1207.0168 | bell - state analysis ( bsa ) is essential in quantum communication , but it is impossible to distinguish unambiguously the four bell states in the polarization degree of freedom ( dof ) of two - photon systems with only linear optical elements , except for the case in which the bsa is assisted with hyperentangled stat... | 156 |
quant-ph0509026 | the dynamics of particles moving in a medium defined by its relativistically invariant stochastic properties is investigated . for this aim , the force exerted on the particles by the medium is defined by a stationary random variable as a function of the proper time of the particles . the equations of motion for a sing... | 143 |
astro-ph0004167 | the good energy resolution ( 34 kev fwhm ) of the transient gamma ray spectrometer ( tgrs ) on board the _ wind _ spacecraft makes it sensitive to doppler - shifted outbursts of 511 kev electron - positron annihilation radiation , the reason being that the doppler shift causes the cosmic line to be slightly offset from... | 175 |
1211.1364 | community detection is the process of assigning nodes and links in significant communities ( e.g. clusters , function modules ) and its development has led to a better understanding of complex networks . when applied to sizable networks , we argue that most detection algorithms correctly identify prominent communities ... | 159 |
astro-ph9609183 | we have studied the distribution of @xmath0 galaxies from the roe / nrl cosmos / ukst catalogue around two samples of @xmath1 qsos with similar redshift distributions . the first sample is formed by 144 radio - loud qsos from the parkes catalogue , and the other contains 167 optically selected qsos extracted from the l... | 224 |
hep-lat9708011 | the order of the coulomb - higgs transition in the u(1)-higgs model with unfrozen modulus of the scalar field is studied . large lattices ( up to @xmath0 in one case ) and high statistics are used . we fix @xmath1 and explore specially a region of @xmath2-values where metastability is observed . we study the thermodyna... | 215 |
1107.4343 | the arecibo l - band feed array zone of avoidance ( alfa zoa ) survey has discovered a nearby galaxy , alfa zoa j1952 + 1428 , at a heliocentric velocity of + 279 @xmath0 . the galaxy was discovered at low galactic latitude by 21-cm emission from neutral hydrogen ( h ) . we have obtained follow - up observations with t... | 192 |
1609.02736 | we show that resonant dipole - dipole interactions between rydberg atoms in a triangular lattice can give rise to artificial magnetic fields for spin excitations . we consider the coherent dipole - dipole coupling between @xmath0 and @xmath1 rydberg states and derive an effective spin-1/2 hamiltonian for the @xmath0 ex... | 154 |
0707.4660 | the influence of lorentz- and cpt - violating terms of the extended standard model on a semi - classical two - level system is analyzed . it is shown that the lorentz - violating background ( when coupled with the fermion sector in a vector way ) is able to induce modifications on the rabi oscillation pattern , promoti... | 138 |
1606.06017 | we propose an approach for multiple sequence alignment ( msa ) derived from the dynamic time warping viewpoint and recent techniques of curve synchronization developed in the context of functional data analysis . starting from pairwise alignments of all the sequences ( viewed as paths in a certain space ) , we construc... | 204 |
1510.06014 | in 1982 , marshall p. tulin published a report proposing a framework for reducing the equations for gravity waves generated by moving bodies into a single nonlinear differential equation solvable in closed form [ _ proc . 14th symp . on naval hydrodynamics _ , 1982 , pp.1951 ] . several new and puzzling issues were hig... | 216 |
1009.0894 | w28 is one of the archetype supernova remnants ( snrs ) interacting with molecular clouds . h.e.s.s . observation found four tev sources which are coincident with the molecular clouds ( mcs ) around w28 , but _ fermi _ lat detected no prominent gev counterparts for two of them . an accumulative diffusion model is estab... | 188 |
1604.08791 | the hypothesis of a pevatron in the galactic center , emerged with the recent @xmath0-ray measurements of h.e.s.s . @xcite , motivates the search for neutrinos from this source . the effect of @xmath0-ray absorption is studied : at the energies currently probed , the known background radiation fields lead to small effe... | 147 |
0801.4568 | in the cdm cosmological framework structures grow from merging with smaller structures . merging should have observable effects on galaxies including destroying disks and creating spheroids . this proceeding aims to give a brief overview of how mergers occur in cosmological simulations . in this regard it is important ... | 151 |
cond-mat0610671 | in this paper , we investigate the microscopic dynamics of a polymer of length @xmath0 translocating through a narrow pore . characterization of its purportedly anomalous dynamics has so far remained incomplete . we show that the polymer dynamics is anomalous until the rouse time @xmath1 , with a mean square displaceme... | 128 |
1009.0365 | we investigate the effects of quantum gravity on the planck era of the universe . in particular , using different versions of the generalized uncertainty principle and under specific conditions we find that the main planck quantities such as the planck time , length , mass and energy become larger by a factor of order ... | 179 |
1105.1877 | we study the velocity structure of penumbral filaments in the deep photosphere to obtain direct evidence for the convective nature of sunspot penumbrae . a sunspot was observed at high spatial resolution with the 1-m swedish solar telescope in the deep photospheric c@xmath0i5380 absorption line . the multi - object mul... | 166 |
hep-lat0206010 | the laplacian gauge is a nonperturbative gauge fixing that reduces to landau gauge in the asymptotic limit . like landau gauge , it respects lorentz invariance , but it is free of gribov copies ; the gauge fixing is unambiguous . in this paper we study the infrared behavior of the lattice gluon propagator in laplacian ... | 116 |
astro-ph9610097 | it is believed that most giant elliptical galaxies possess nuclear black holes with masses in excess of @xmath0 . bondi accretion from the interstellar medium might then be expected to produce quasar - like luminosities from the nuclei of even quiescent elliptical galaxies . it is a puzzle that such luminosities are _ ... | 224 |
1201.1780 | we analyze spacetime momentum currents on a classical string worldsheet , study their generic connection via ads / cft correspondence to the instantaneous energy loss of the dual field theory degrees of freedom and suggest a general formula for computing energy loss in a time - dependent string configuration . applying... | 109 |
1003.0002 | recent claims of a gamma - ray excess in the diffuse galactic emission detected by the fermi large area telescope made use of spatial templates from the interstellar medium ( ism ) column density and the 408 mhz sky as proxies for neutral pion and inverse compton ( ic ) gamma - ray emission , respectively . we identify... | 267 |
1409.5641 | the complexity of computing the lempel - ziv factorization and the set of all runs (= maximal repetitions ) is studied in the decision tree model of computation over ordered alphabet . it is known that both these problems can be solved by ram algorithms in @xmath0 time , where @xmath1 is the length of the input string ... | 167 |
1008.1070 | we study the effect of marginal and irrelevant deformations on the renormalization of operators near a cft fixed point . new divergences in a given operator are determined by its ope with the operator @xmath0 that generates the deformation . this provides a scheme to compute the couplings @xmath1 between the operator @... | 274 |
math-ph0407013 | an embedding scheme is developed for the dirac hamiltonian @xmath0 . dividing space into regions i and ii separated by surface @xmath1 , an expression is derived for the expectation value of @xmath0 which makes explicit reference to a trial function defined in i alone , with all details of region ii replaced by an effe... | 136 |
1508.04036 | there is some consensus among orthodox category theorists that the concept of adjoint functors is the most important concept contributed to mathematics by category theory . we give a heterodox treatment of adjoints using heteromorphisms ( object - to - object morphisms between objects of different categories ) that par... | 149 |
1405.6917 | the search for sharp features in the gamma - ray spectrum is a promising approach to identify a signal from dark matter annihilations over the astrophysical backgrounds . in this paper we investigate the generation of gamma - ray lines and internal bremsstrahlung signals in a toy model where the dark matter particle is... | 134 |
astro-ph0411229 | techniques for the construction of dynamical galaxy models should be considered essential infrastructure that should be put in place before gaia flies . three possible modelling techniques are discussed . although one of these seems to have significantly more potential than the other two , at this stage work should be ... | 131 |
astro-ph0509475 | i summarize some results from the recent co survey of late - type , low surface brightness ( lsb ) spiral galaxies by matthews et al . ( 2005 ) . we have now detected co emission from six late - type , lsb spirals , demonstrating that despite their typical low metallicities and low mean gas surface densities , some lsb... | 134 |
cond-mat0507293 | the ising spin - glasses are investigated on three dual pairs of hierarchical lattices , using exact renormalization - group transformation of the quenched bond probability distribution . the goal is to investigate a recent conjecture which relates , on such pairs of dual lattices , the locations of the multicritical p... | 220 |
astro-ph0009205 | we present the current results of a survey for oh megamasers ( ohms ) underway at the arecibo observatory . the survey is 2/3 complete and has produced a high ohm detection rate ( 1 in 6 ) from a redshift - selected sample of _ iras _ galaxies . the survey will relate the ohm luminosity function to the galaxy merger ra... | 115 |
1602.08456 | in this paper , we study the dynamics of epidemic processes taking place in adaptive networks of arbitrary topology . we focus our study on the adaptive susceptible - infected - susceptible ( asis ) model , where healthy individuals are allowed to temporarily cut edges connecting them to infected nodes in order to prev... | 188 |
1301.6545 | stars form in dense cores of molecular clouds that are observed to be significantly magnetized . in the simplest case of a laminar ( non - turbulent ) core with the magnetic field aligned with the rotation axis , both analytic considerations and numerical simulations have shown that the formation of a large , @xmath0-s... | 291 |
1402.0218 | recently much attention has been paid to the study of the robustness of interdependent and multiplex networks and , in particular , networks of networks . the robustness of interdependent networks can be evaluated by the size of a mutually connected component when a fraction of nodes have been removed from these networ... | 146 |
1702.05629 | the recent discovery of a gravitational wave from the merging of two black holes of about 30 solar masses each challenges our incomplete understanding of massive stars and their evolution . critical ingredients comprise mass - loss , rotation , magnetic fields , internal mixing , and mass transfer in close binary syste... | 229 |
cond-mat0012510 | critical behavior of the infrared reflectivity of rusr@xmath0gdcu@xmath0o@xmath1 ceramics is observed near the superconducting @xmath2 = 45 k and magnetic @xmath3 = 133 k transition temperatures . the optical conductivity reveals the typical features of the @xmath4-axis optical conductivity of strongly underdoped multi... | 184 |
1103.3273 | some tails of ram - pressure stripped galaxies are detected in h@xmath0 , some in h@xmath1 , and some in x - ray ( but never all three so far ) . we use numerical simulations to probe the conditions for the production of x - ray bright tails , demonstrating that the primary requirement is a high pressure intracluster m... | 191 |
1402.1043 | using spectral data from non - strange and strange hadronic @xmath0 decays , flavor - breaking chiral sum rules involving the flavor @xmath1 and @xmath2 current - current two - point functions are constructed and used to determine the @xmath3 nnlo low - energy constant combinations @xmath4 , @xmath5 and @xmath6 . the f... | 129 |
1504.00184 | the relaxation times over which dissipative fluxes restore their steady state values have been evaluated for a pion gas using the 14-moment method . the effect of the medium has been implemented through a temperature dependent @xmath0 cross - section in the collision integral which is obtained by including one - loop s... | 114 |
1302.1743 | we consider high energy electron scattering by hydrogen atoms in the presence of a laser field of moderate power and higher frequencies . if the field is a superposition of a linearly and a circularly polarized laser beam in a particular configuration , then we can show that circular dichroism in two photon transitions... | 112 |
1312.5103 | we consider two alternative tests to the higher criticism test of donoho and jin [ _ ann . statist . _ * 32 * ( 2004 ) 962994 ] for high - dimensional means under the sparsity of the nonzero means for sub - gaussian distributed data with unknown column - wise dependence . the two alternative test statistics are constru... | 176 |
1603.02284 | we present the first direct comparison between balmer line and panchromatic sed - based sfrs for @xmath0 galaxies . for this comparison we used 17 star - forming galaxies selected from the mosfire deep evolution field ( mosdef ) survey , with @xmath1 detections for h@xmath2 and at least two ir bands ( _ spitzer_/mips 2... | 299 |
0707.4176 | we report the discovery of gas streaming motions along nuclear spiral arms towards the liner nucleus of the galaxy ngc6951 . the observations , obtained using the gmos integral field spectrograph on the gemini north telescope , yielded maps of the flux distributions and gas kinematics in the h@xmath0 , [ nii]@xmath1658... | 253 |
cond-mat0204060 | we investigate the presence of off - diagonal long - range order in a harmonically confined two - dimensional bose gas . in the noninteracting case , an analytical calculation of the the finite - temperature one - particle density martix provides an exact description of the spatial correlations known to be associated w... | 145 |
1201.3949 | recent theoretical works have shown that matter swapping between two parallel braneworlds could occur under the influence of magnetic vector potentials . in our visible world , galactic magnetism possibly produces a huge magnetic potential . as a consequence , this paper discusses the possibility to observe neutron dis... | 142 |
astro-ph0604154 | we consider modified gravity models involving inverse powers of fourth - order curvature invariants . using these models equivalence to the theory of a scalar field coupled to a linear combination of the invariants , we investigate the properties of the propagating modes . even in the case for which the fourth derivati... | 117 |
1305.5884 | interference is a major performance bottleneck in heterogeneous network ( hetnet ) due to its multi - tier topological structure . we propose almost blank resource block ( abrb ) for interference control in hetnet . when an abrb is scheduled in a macro bs , a resource block ( rb ) with blank payload is transmitted and ... | 249 |
1111.1968 | the length spectra of flat three - dimensional dielectric resonators of circular shape were determined from a microwave experiment . they were compared to a semiclassical trace formula obtained within a two - dimensional model based on the effective index of refraction approximation and a good agreement was found . it ... | 149 |
1407.8139 | in this paper the four - dimensional ( 4-d ) space - velocity cosmological general relativity of carmeli is developed by a general solution of the einstein field equations . the tolman metric is applied in the form @xmath0 where @xmath1 is the metric tensor . we use comoving coordinates @xmath2 , where @xmath3 is the h... | 289 |
1404.6494 | we derive an analytical gauge - invariant formula between the polyakov loop @xmath0 and the dirac eigenvalues @xmath1 in qcd , i.e. , @xmath2 , in ordinary periodic square lattice qcd with odd - number temporal size @xmath3 . here , @xmath4 denotes the dirac eigenstate , and @xmath5 temporal link - variable operator . ... | 221 |
1601.02715 | we present the first dedicated x - ray study of the supernova remnant ( snr ) g32.8@xmath00.1 ( kes 78 ) with _ suzaku_. x - ray emission from the whole snr shell has been detected for the first time . the x - ray morphology is well correlated with the emission from the radio shell , while anti - correlated with the mo... | 264 |
1309.3955 | recent observations of the diffuse galactic @xmath0-ray emission ( dge ) by the _ fermi _ large area telescope ( _ fermi_-lat ) have shown significant deviations , above a few gev until about 100 gev , from dge models that use the galprop code for the propagation of cosmic ray ( cr ) particles outside their sources in ... | 292 |
1501.04962 | stellar multiplicity lies at the heart of many problems in modern astrophysics , including the physics of star formation , the observational properties of unresolved stellar populations , and the rates of interacting binaries such as cataclysmic variables , x - ray binaries , and type ia supernovae . however , little i... | 212 |
0810.1341 | observations and numerical magnetohydrodynamic ( mhd ) simulations indicate the existence of outflows and ordered large - scale magnetic fields in the inner region of hot accretion flows . in this paper we present the self - similar solutions for advection - dominated accretion flows ( adafs ) with outflows and ordered... | 194 |
1403.1193 | we study the possibility that primordial magnetic fields generated in the transition between inflation and reheating posses magnetic helicity , @xmath0 . the fields are induced by stochastic currents of scalar charged particles created during the mentioned transition . we estimate the rms value of the induced magnetic ... | 288 |
math0006056 | we consider the derived categories of modules over a certain family @xmath0 ( @xmath1 ) of graded rings , and floer cohomology of lagrangian intersections in the symplectic manifolds which are the milnor fibres of simple singularities of type @xmath2 we show that each of these two rather different objects encodes the t... | 178 |
1110.1310 | using the mathisson - papapetrou - dixon ( mpd ) equations , we investigate the trajectories of a spinning particle starting near @xmath0 in a kerr field and moving with the velocity close to the velocity of light ( @xmath0 is the boyer - lindquist radial coordinate of the counter - rotation circular photon orbits ) . ... | 141 |
astro-ph0511541 | we present a search for o i in the spectra of nine @xmath0 qsos taken with keck / hires . we detect six systems with @xmath1 in the redshift intervals where o i @xmath2 falls redward of the ly@xmath3 forest . four of these lie towards sdss j1148 + 5251 ( @xmath4 ) . this imbalance is unlikely to arise from variations i... | 258 |
1611.06322 | rumour detection is hard because the most accurate systems operate retrospectively , only recognising rumours once they have collected repeated signals . by then the rumours might have already spread and caused harm . we introduce a new category of features based on novelty , tailored to detect rumours early on . to co... | 147 |
cond-mat9907009 | static properties of a bose - fermi mixture of trapped potassium atoms are studied in terms of coupled gross - pitaevskii and thomas - fermi equations for both repulsive and attractive bose - fermi interatomic potentials . qualitative estimates are given for solutions of the coupled equations , and the parameter region... | 137 |
1108.2732 | after a short review of the recent developments in studies of neutrino - nucleus interactions , the predictions for double - differential and integrated charged current - induced quasielastic cross sections are presented within two different relativistic approaches : one is the so - called susa method , based on the su... | 110 |
gr-qc0512008 | in this work , numerical simulations were used to investigate the gravitational stochastic background produced by coalescences occurring up to @xmath0 of double neutron star systems . the cosmic coalescence rate was derived from monte carlo methods using the probability distributions for forming a massive binary and to... | 193 |
0903.2362 | we derive a formula describing the adiabatically pumped charge through an interacting quantum dot within the scattering matrix and green s function approach . we show that when the tunneling rates between the leads and the dot are varied adiabatically in time , both in modulus and phase , the current induced in the dot... | 117 |
astro-ph0310507 | particles crossing repeatedly the surface of a shock wave can be energized by first order fermi acceleration . the linear theory is successful in describing the acceleration process as long as the pressure of the accelerated particles remains negligible compared to the kinetic pressure of the incoming gas ( the so - ca... | 277 |
nucl-ex0401028 | i start by reviewing existing @xmath0 measurements with particular emphasis on the recent 221 mev @xmath0 measurement at triumf which permitted the weak meson - nucleon coupling constants @xmath1 and @xmath2 to be determined separately for the first time . i then review @xmath3 experiments , with specific details of th... | 125 |
1107.2405 | we present a new x - ray analysis of the dwarf seyfert galaxy ngc 4395 , based on two archival _ xmm - newton _ and _ suzaku _ observations . this source is well known for a series of remarkable properties : one of the smallest estimated black hole masses among active galactic nuclei ( of the order of @xmath010@xmath1 ... | 200 |
cond-mat0201263 | we propose and study a simplified model for the surface and bulk structures of crosslinked polymer gels , into which voids are introduced through templating by surfactant micelles . such systems were recently studied by atomic force microscopy [ m. chakrapani _ et al . _ , e - print cond - mat/0112255 ] . the gel is re... | 292 |
1206.1843 | the three - gluon vertex is a basic object of interest in nonabelian gauge theory . it contains important structural information , in particular on infrared divergences , and also figures prominently in the schwinger - dyson equations . at the one - loop level , it has been calculated and analyzed by a number of author... | 137 |
hep-ph0603141 | we introduce a new index of the leptonic cp phase dependence @xmath0 and derive the maximal condition for this index in a simple and general form . @xmath1 may be realized even in the jparc experiment . in the case that the 1 - 3 mixing angle can be observed in the next generation reactor experiments , namely @xmath2 ,... | 100 |
0710.0938 | a latin bitrade @xmath0 is a pair of partial latin squares that define the difference between two arbitrary latin squares @xmath1 and @xmath2 of the same order . a @xmath3-homogeneous bitrade @xmath0 has three entries in each row , three entries in each column , and each symbol appears three times in @xmath4 . cavenagh... | 121 |
cs0309029 | adding small code snippets at key points to existing code fragments is called instrumentation . it is an established technique to debug certain otherwise hard to solve faults , such as memory management issues and data races . dynamic instrumentation can already be used to analyse code which is loaded or even generated... | 184 |
1403.1346 | we report short - time variations in the plasma tail of c/2013 r1(lovejoy ) . a series of short ( two to three minutes ) exposure images with the 8.2-m subaru telescope shows faint details of filaments and their motions over 24 minutes observing duration . we identified rapid movements of two knots in the plasma tail n... | 164 |
1102.0130 | in this paper we investigate the effect of terminal substituents on the dynamics of spin and charge transport in donor - acceptor substituted polyenes ( @xmath0 ) chains , also known as push - pull polyenes . we employ a long - range correlated model hamiltonian for the @xmath0 system , and time - dependent density mat... | 205 |
1312.2352 | for the better understanding of the astrophysical @xmath0-process the experimental determination of low energy proton- and @xmath1-capture cross sections on heavy isotopes is required . the existing data for the @xmath2mo(p,@xmath0)@xmath3tc reaction are contradictory and strong fluctuation of the cross section is obse... | 174 |
astro-ph0008523 | hst observations have contributed significantly to our knowledge on the behaviour of isolated neutron stars ( inss ) as optical emitters . first , hst has been instrumental both to discover new optical counterparts ( psr b1055 - 52 , psr b1929 + 10 , psr b0950 + 08 ) and to confirm proposed identifications ( psr b0656 ... | 216 |
hep-ph9712305 | in the minimal supergravity model ( msugra ) , as the parameter @xmath0 increases , the charged higgs boson and light bottom squark masses decrease , which can potentially increase contributions from @xmath1 , @xmath2 and @xmath3 loops in the decay @xmath4 . we update a previous qcd improved @xmath4 decay calculation t... | 226 |
1702.07952 | we use bbn observational data on primordial abundance of @xmath0 to constrain @xmath1 gravity . the three most studied viable @xmath1 models , namely the power law , the exponential and the square - root exponential are considered , and the bbn bounds are adopted in order to extract constraints on their free parameters... | 120 |
astro-ph0408152 | einstein ( 1936 ) predicted the phenomenon presently known as gravitational lensing ( gl ) . a prime feature of gl is the magnification , because of the gravitational field , of the star visible surface as seen from a distant observer . we show here that nonlinear electrodynamics ( nled ) modifies in a fundamental basi... | 166 |
1509.05721 | paramagnetic impurities in a quantum spin - liquid can result in kondo effects with highly unusual properties . we have studied the effect of locally exchange - coupling a paramagnetic impurity with the spin-@xmath0 honeycomb kitaev model in its gapless spin - liquid phase . the ( impurity ) scaling equations are found... | 226 |
1008.3893 | * we model the spreading of a crisis by constructing a global economic network and applying the susceptible - infected - recovered ( sir ) epidemic model with a variable probability of infection . the probability of infection depends on the strength of economic relations between the pair of countries , and the strength... | 236 |
cond-mat0303169 | we perform a many - body investigation of the spin dephasing in @xmath0-typed inas quantum wells under moderate magnetic fields in the voigt configuration by constructing and numerically solving the kinetic bloch equations . we obtain the spin dephasing time due to the rashba effect together with the spin conserving sc... | 151 |
astro-ph0609421 | we present berkeley illinois maryland association ( bima ) millimeter interferometer observations of giant molecular clouds ( gmcs ) along a spiral arm in m31 . the observations consist of a survey using the compact configuration of the interferometer and follow - up , higher - resolution observations on a subset of th... | 228 |
1301.7536 | we show that decaying axino dark matter with r - parity violation can explain the observed excess of the 130gev gamma - ray line from the galactic center in the fermi data . the branching fraction of the axino decay into monochromatic photons can be @xmath0 , and constraints from continuum gamma - rays and the anti - p... | 176 |
astro-ph9711326 | linear state space modeling determines the hidden autoregressive ( ar ) process in a noisy time series ; for an ar process the time series current value is the sum of current stochastic `` noise '' and a linear combination of previous values . we present preliminary results from modeling a sample of 4 channel batse lad... | 119 |
astro-ph0309445 | we report on the _ xmm - newton _ observations of the young , 102 ms pulsar psr b1706 - 44 . we have found that both a blackbody plus power - law and a magnetized atmospheric model plus power - law provide an excellent fit to the epic spectra . the two scenarios are therefore indistinguishable on a statistical basis , ... | 197 |
astro-ph9812148 | models that seek to unify bl lacs and low - power radio galaxies predict that the two types of object should show similar isotropically emitted x - ray emission . testing this is usually limited by difficulties in separating strong x - ray emission from a bl lac nucleus and surrounding low - surface brightness emission... | 173 |
0903.4088 | we present the results from a multi - epoch survey of two regions of m33 using the 3.5 m wiyn telescope . the inner field is located close to the centre of the galaxy , with the outer region situated about @xmath0 kpc away in the southern spiral arm , allowing us to sample a large metallicity range . we have data for 1... | 166 |
0712.1640 | a new path - integral theory is developed to calculate the photoemission spectra ( pes ) of correlated many - electron systems . the application to the study on bi@xmath0sr@xmath0cacu@xmath0o@xmath1 ( bi2212 ) and boron - doped diamond ( bdd ) is discussed in details . it is found that the isotopic shift in the angle -... | 154 |
1006.3228 | we calculate the phase , the temperature and the junction length dependence of the supercurrent for ballistic graphene josephson - junctions . for low temperatures we find non - sinusoidal dependence of the supercurrent on the superconductor phase difference for both short and long junctions . the skewness , which char... | 133 |
0908.1930 | several interesting correlations among gamma ray bursts ( grb ) prompt and afterglow properties have been found in the recent years . some of these correlations have been proposed also to standardize grb energetics to use them as standard candles in constraining the expansion history of the universe up to @xmath0 . how... | 117 |
1601.06098 | combining insights from the study of type refinement systems and of monoidal closed chiralities , we show how to reconstruct lawvere s hyperdoctrine of presheaves using a full and faithful embedding into a monoidal closed bifibration living now over the compact closed category of small categories and distributors . bes... | 164 |
1702.02541 | in human societies , people s willingness to compete and strive for better social status as well as being envious of those perceived in some way superior lead to social structures that are intrinsically hierarchical . here we propose an agent - based , network model to mimic the ranking behaviour of individuals and its... | 209 |
0910.5680 | electrons and holes in clean , charge - neutral graphene behave like a strongly coupled relativistic liquid . the thermo - electric transport properties of the interacting dirac quasiparticles are rather special , being constrained by an emergent lorentz covariance at hydrodynamic frequency scales . at small carrier de... | 170 |
1611.09097 | we fitted the @xmath0-kev spectrum of all the observations of the neutron - star low - mass x - ray binary 4u 1636@xmath153 taken with the _ rossi x - ray timing explorer _ using a model that includes a thermal comptonisation component . we found that in the low - hard state the power - law index of this component , @x... | 256 |
0711.4933 | in our recent paper @xcite we described a fast cubic ( bispectrum ) estimator of the amplitude of primordial non - gaussianity of local type , @xmath0 , from a combined analysis of the cosmic microwave background ( cmb ) temperature and e - polarization observations . in this paper we generalize the estimator to deal w... | 144 |
hep-th0201198 | the @xmath0superconformal algebra is a @xmath1 algebra with two free parameters . it consists of 3 superconformal currents of spins @xmath2 , @xmath2 and 2 . the algebra is proved to be the symmetry algebra of the coset @xmath3 . at the central charge @xmath4 the algebra coincides with the superconformal algebra associ... | 103 |
1207.0230 | we present a model for cosmological inflation which has a natural turn on " and a natural turn off " mechanism . in our model inflation is driven by the hawking - like radiation that occurs in friedman - robertson - walker ( frw ) space - time . this hawking - like radiation results in an effective negative pressure fl... | 179 |
astro-ph0407539 | we discuss the systematic uncertainties in the recovery of dark energy properties from the use of baryon acoustic oscillations as a standard ruler . we demonstrate that while unknown relativistic components in the universe prior to recombination would alter the sound speed , the inferences for dark energy from low - re... | 126 |
1308.1188 | the cohesive energies of solids calculated using mglj eos proposed by sun jiuxun ( sun jiuxun , j. phys . : condens . matter 17 , l103 ( 2005 ) ) are seen to be erroneous . also we observed that the thermodynamic properties calculated using the mglj potential diverge for materials whose pressure derivative of bulk modu... | 283 |
hep-ph9903304 | based on the self - consistent scheme beyond mean - field approximation in the large @xmath0 expansion , including current quark mass explicitly , a general scheme of su(2 ) njl model is developed . to ensure the quark self - energy expanded in the proper order of @xmath0 , an approximate internal meson propagator is d... | 133 |
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