article_id stringlengths 9 15 | abstract_text stringlengths 390 2.07k | token_count int64 100 300 |
|---|---|---|
hep-th0412111 | kaluza klein compactifications with four - dimensional inflationary geometry combine the attractive idea of higher dimensional models with an attempt to incorporate four - dimensional early - time or late - time cosmology . we analyze the mass spectrum of cosmological perturbations around such compactifications , inclu... | 230 |
astro-ph9602125 | we present the first measurement of the rate of type ia supernovae at high redshift . the result is derived using a large subset of data from the supernova cosmology project as described in more detail at this meeting by perlmutter et al . ( 1996 ) . we present our methods for estimating the numbers of galaxies and the... | 110 |
astro-ph0006331 | in paper i ( mickaelian et al . 1999 ) , we compared the surface density of qsos in the bright quasar survey ( bqs ) and in the first byurakan survey ( fbs ) and concluded that the completeness of the bqs is of the order of 70% rather than 3050% as suggested by several authors . a number of new observations recently be... | 113 |
1007.1228 | of concern in the paper is a study of steady incompressible viscoelastic and electrically conducting fluid flow and heat transfer in a parallel plate channel with stretching walls in the presence of a magnetic field applied externally . the flow is considered to be governed by walter s liquid b fluid . the problem is s... | 221 |
1502.00157 | these are the notes for a course at the 18th brazilian school of probability held from august 3rd to 9th , 2014 in mambucaba . the aim of the course is to introduce the basic problems of non linear pdes with stochastic and irregular terms . we explain how it is possible to handle them using two main techniques : the no... | 104 |
hep-ph9603260 | nucleon structure functions , as measured in deep - inelastic lepton scattering , are studied within a covariant scalar diquark spectator model . regarding the nucleon as an approximate two - body bound state of a quark and diquark , the bethe - salpeter equation ( bse ) for the bound state vertex function is solved in... | 207 |
0904.2779 | we numerically analyze the evolution of a long - duration gamma - ray burst jet as it leaves the progenitor star and propagates to the photospheric radius , where radiation can be released . we find that the interaction of the relativistic material with the progenitor star has influences well beyond the stellar surface... | 157 |
hep-lat0412040 | non - abelian lattice spin models with symmetry group @xmath0 or @xmath1 can be formulated in terms of link variables which are subject to the bianchi constraints . using this representation we derive exact and local dual formulation for the partition function of such models on a cubic lattice in arbitrary dimension @x... | 294 |
1110.1077 | high - precision multi - band _ hst _ photometry reveals that the main sequence ( ms ) of the globular cluster ngc 6397 splits into two components , containing @xmath030% and @xmath070% of the stars . this double sequence is consistent with the idea that the cluster hosts two stellar populations : ( _ i _ ) a primordia... | 146 |
1406.1484 | our main result is a positive answer to the question whether one can find homogeneous distances on the heisenberg groups that have the besicovitch covering property ( bcp ) . this property is well known to be one of the fundamental tools of measure theory , with strong connections with the theory of differentiation of ... | 260 |
1007.1655 | in this paper we describe a procedure for calculating the number of regular octahedrons that have vertices with coordinates in the set @xmath0 . as a result , we introduce a new sequence in _ the online encyclopedia of integer sequences _ ( a178797 ) and list the first one hundred terms of it . we adapt the method appe... | 167 |
physics0506066 | employing profits data of japanese companies in 2002 and 2003 , we confirm that pareto s law and the pareto index are derived from the law of detailed balance and gibrat s law . the last two laws are observed beyond the region where pareto s law holds . by classifying companies into job categories , we find that compan... | 130 |
0711.4233 | a close study is made of the static structure factor for graphene in a magnetic field at integer filling factors @xmath0 , with focus on revealing possible signatures of @xmath1relativistic `` quantum field theory in the low - energy physics of graphene . it is pointed out , in particular , that for graphene even the v... | 142 |
1106.5780 | we have studied the properties of the stellar populations in the field of the ngc346 cluster in the small magellanic cloud , using the results of a novel self - consistent method that provides a reliable identification of pre - main sequence ( pms ) objects actively undergoing mass accretion , regardless of their age .... | 296 |
hep-ph9804430 | events with tagged photons in the process of electron positron annihilation into hadrons are considered . the initial state radiation is suggested to scan the hadronic cross section with the energy . qed radiative corrections are taken into account . the results for the total and exclusive cross sections are given in a... | 130 |
1503.08188 | we investigate the quantum phase transitions of the extended hubbard model at half - filling with periodic boundary conditions employing the entanglement of particles , as opposed to the more traditional entanglement of modes . our results show that the entanglement has either discontinuities or local minima at the cri... | 106 |
hep-ex0407023 | the final results of the macro experiment on atmospheric neutrino oscillations are presented and discussed . the data concern different event topologies with average neutrino energies of @xmath0 and @xmath1 gev . multiple coulomb scattering of the high energy muons in absorbers was used to estimate the neutrino energy ... | 130 |
astro-ph0101571 | we measured the near - infrared orbital light curve of the black hole binary a062000 in 1995 and 1996 . the light curves show an asymmetric , double - humped modulation with extra emission in the peak at orbital phase 0.75 . there were no significant changes in the shape of the light curve over the one - year observati... | 257 |
1609.03775 | extending deep observations of the neutral atomic hydrogen ( hi ) to the environment around galaxy groups can reveal a complex history of group interactions which is invisible to studies that focus on the stellar component . hickson compact group 44 ( hcg 44 ) is a nearby example and we have combined hi data from the k... | 300 |
1009.3784 | the effect of interstitial hydrogen on the elastic properties of @xmath0-iron is investigated using _ ab initio _ density functional theory . we find that while the overall strength properties are reduced by h , the effects are mainly due to the resulting local volume expansion . we use these concentration - dependent ... | 172 |
1212.6081 | density oscillations of confined one - dimensional fermi gases of contact repulsive interactions in a continuous space are discussed within bethe - ansatz based spin - density functional theory . the results are compared against the exact analytical and the exact diagonalization method . for unpolarized system , the nu... | 118 |
1204.0405 | using a characterization of mutual complete dependence copulas , we show that , with respect to the sobolev norm , the mcd copulas can be approximated arbitrarily closed by shuffles of min . this result is then used to obtain a characterization of generalized shuffles of copulas introduced by durante , sarkoci and semp... | 163 |
gr-qc9809010 | we study series of the stationary solutions with asymptotic flatness properties in the einstein - maxwell - free scalar system because they are locally equivalent with the exterior solutions in some class of the scalar - tensor theories of gravity . first , we classify spherical exterior solutions into two types of the... | 186 |
1507.07548 | a new version release ( 2.0 ) of the molecular simulation tool _ ms_2 [ s. deublein et al . , comput . phys . commun . 182 ( 2011 ) 2350 ] is presented . version 2.0 of _ ms_2 features a hybrid parallelization based on mpi and openmp for molecular dynamics simulation to achieve higher scalability . furthermore , the fo... | 155 |
hep-ph9511331 | short - distance qcd is employed to calculate the @xmath0 survival probability in an equilibrating parton gas , whose evolution is governed by a set of master rate equations . partons in the early stage of high - energy nuclear collisions may initially not be in equilibrium , but their average transverse momentum is su... | 130 |
1401.4222 | we develop a new general formulation to explore light - driven electron transport through a single - molecule device with multiple pathways . three individual systems are proposed including ( i ) a two - terminal molecular junction based on phenyl - acetylene macrocycle ( pam ) , ( ii ) pam with three terminals , and (... | 197 |
0804.2640 | we obtained the spectrum of probability of the bremsstrahlung emission accompanying the @xmath0-decay of @xmath1 ( e@xmath2=4.8 mev ) by measuring the @xmath0-@xmath3 coincidences and using the model presented in our previous study on the @xmath4decay of @xmath5 ( e@xmath2=7.7 mev ) . we compare the experimental data w... | 151 |
1701.09098 | the supernova remnant kes 73 and/or the magnetar 1e 1841 - 045 at its center can deposit a large amount of energy to the surroundings and is potentially responsible for particle acceleration . using the data taken with the _ fermi _ large area telescope ( lat ) , we confirmed the presence of an extended source whose ce... | 195 |
1111.1883 | inexact newton regularization methods have been proposed by hanke and rieder for solving nonlinear ill - posed inverse problems . every such a method consists of two components : an outer newton iteration and an inner scheme providing increments by regularizing local linearized equations . the method is terminated by a... | 156 |
1112.2097 | in the perspective of comparisons between proton - proton and heavy - ion physics , understanding the production mechanisms ( soft and hard ) in that lead to strange particles is of importance . measurements of charged multi - strange ( anti-)baryons ( and ) are presented for collisions at @xmath0 = 7 . this report is ... | 149 |
0803.1619 | the galactic center is a hotbed of star formation activity , containing the most massive star formation site and three of the most massive young star clusters in the galaxy . given such a rich environment , it contains more stars with initial masses above 100 than anywhere else in the galaxy . this review concerns the ... | 163 |
1201.5617 | we extend previous measurements of cosmic infrared background ( cib ) fluctuations to @xmath0 using new data from the spitzer extended deep survey . two fields , with depths of @xmath1 hr / pixel over 3 epochs , are analyzed at 3.6 and 4.5 . maps of the fields were assembled using a self - calibration method uniquely s... | 280 |
1008.5227 | in this article we propose multiplication based random walk metropolis hastings ( mh ) algorithm on the real line . we call it the random dive mh ( rdmh ) algorithm . this algorithm , even if simple to apply , was not studied earlier in markov chain monte carlo literature . one should not confuse rdmh with rwmh . it is... | 247 |
1212.3755 | we report a correlation between velocity offset ( @xmath0 ) of strong absorption systems and the bolometric luminosity ( @xmath1 ) of quasars in sdss - dr7 . we find that , @xmath2 shows a power law increase with @xmath1 , with a slope @xmath3 . we find that such a relation of @xmath2 with @xmath1 is expected for outfl... | 120 |
1209.1828 | we analyze the finite volume spatial convergence combined with exponential time differencing of order one ( etd1 ) for temporal discretization of a non linear advection diffusion reaction equation ( adr ) modeling transport in porous media . we derive the @xmath0 estimate under the assumption that the non linear reacti... | 119 |
0908.0610 | in the framework of turbulence dynamo , flow motions amplify a weak seed magnetic field through the stretching of field lines . although the amplification process has been a topic of active research , less attention has been paid to the length scales of magnetic field . in this paper , we described a numerical study on... | 279 |
0912.2103 | we present photometry , photometric redshifts and extra galactic number counts for ultra deep 15 micron mapping of the gravitational lensing cluster abell 2218 ( a2218 ) , which is the deepest image taken by any facility at this wavelength . this data resolves the cosmic infrared background ( cirb ) beyond the 80% that... | 227 |
astro-ph9702177 | we present the results of fast temporal optical spectroscopy and photometry of the am her type system by cam obtained in february 1990 and march 1991 . emission line profiles show a complex structure and are strongly variable . the radial velocity studies of a sharp component detected in balmer lines in march confirms ... | 215 |
nlin0001009 | recently , adami and coworkers have been able to measure the information content of digital organisms living in their _ avida _ artificial life system . they show that over time , the organisms behave like maxwell s demon , accreting information ( or complexity ) as they evolve . in _ avida _ the organisms do nt intera... | 207 |
cond-mat0509032 | we derive an exact expression for the partition function of the @xmath0 haldane shastry spin chain , which we use to study the density of levels and the distribution of the spacing between consecutive levels . our computations show that when the number of sites @xmath1 is large enough the level density is gaussian to a... | 117 |
1512.05329 | we investigate the backreaction of the quantum fluctuations of a very light ( @xmath0 ) nonminimally coupled spectator scalar field on the expansion dynamics of the universe . the one - loop expectation value of the energy momentum tensor of these fluctuations , as a measure of the backreaction , is computed throughout... | 188 |
1606.00938 | in this paper , we prove that relation - extensions of quasi - tilted algebras are 2-calabi - yau tilted . with the objective of describing the module category of a cluster - tilted algebra of euclidean type , we define the notion of reflection so that any two local slices can be reached one from the other by a sequenc... | 106 |
0906.3496 | we explore the high - dimensional chaotic dynamics of the lorenz-96 model by computing the variation of the fractal dimension with system parameters . the lorenz-96 model is a continuous in time and discrete in space model first proposed by edward lorenz to study fundamental issues regarding the forecasting of spatiall... | 292 |
1301.6597 | we study the deformation of a cavity around a large projectile moving with subsonic velocity in the cloud of small dust particles . to solve this problem , we employ the navier stokes equation for a compressible fluid with due regard for friction between dust particles and atoms of neutral gas . the solutions shows tha... | 130 |
0809.3722 | soft phase lags , in which x - ray pulses in lower energy bands arrive later than pulses in higher energy bands , have been observed in nearly all accretion - powered millisecond pulsars , but their origin remains an open question . in a study of the 2.5 ms accretion - powered pulsar , we report that the magnitude of t... | 171 |
1008.0134 | a field theory appropriate for magnets that display helical order due to the dzyaloshinsky - moriya mechanism , a class that includes mnsi and fege , is used to derive the phase diagram in a mean - field approximation . the helical phase , the conical phase in an external magnetic field , and recent proposals for the s... | 177 |
1409.1448 | packing frustration for confined fluids , i.e. , the incompability between the preferred packing of the fluid particles and the packing constraints imposed by the confining surfaces , is studied for a dense hard - sphere fluid confined between planar hard surfaces at short separations . the detailed mechanism for the f... | 280 |
cond-mat0512106 | ballistic particles interacting with irregular surfaces are representative of many physical problems in the knudsen diffusion regime . in this paper , the collisions of ballistic particles interacting with an irregular surface modeled by a quadratic koch curve , are studied numerically . the @xmath0 moments of the sour... | 219 |
1510.00345 | emission from high-@xmath0 galaxies must unquestionably contribute to the near - infrared background ( nirb ) . however , this contribution has so far proven difficult to isolate even after subtracting the resolved galaxies to deep levels . remaining nirb fluctuations are dominated by unresolved low-@xmath0 galaxies on... | 204 |
astro-ph0408444 | the burst and transient source experiment ( batse ) aboard cgro monitored the whole sky through 8 nai(tl ) crystal scintillators sensitive in the 20 kev - 2 mev energy band continuously from april 1991 until june 2000 . results are presented on the long term variabilty observed in the brightest active galactic nuclei (... | 126 |
0712.0254 | we study the role of diquarks in light baryons through point to point baryon correlators . we contrast results from quenched simulations with ones with two flavors of dynamical overlap fermions . the scalar , pseudoscalar and axial vector diquarks are combined with light quarks to form color singlets . the quenched sim... | 127 |
0711.0464 | this paper presents some parallel developments in quiver / dimer models , hypergeometric systems and dessins denfants . it demonstrates that the setting in which gelfand , kapranov and zelevinsky have formulated the theory of hypergeometric systems , provides also a natural setting for dimer models . the fast inverse a... | 188 |
hep-th9510234 | we consider the general case of @xmath0 dual pairs of type iia / heterotic string theories in four dimensions . we show that if the type iia string in this pair can be viewed as having been compactified on a calabi - yau manifold in the usual way then this manifold must be of the form of a k3 fibration . we also see ho... | 123 |
1506.06070 | we report a study of the normal- and superconducting - state electronic properties of the centrosymmetric compound srpt@xmath0p via @xmath1p nuclear - magnetic - resonance ( nmr ) and magnetometry investigations . essential features such as a sharp drop of the knight shift at @xmath2 and an exponential decrease of the ... | 136 |
1402.1767 | it has been recently pointed out that removing the axial symmetry in the `` multi - angle effects '' associated with the neutrino - neutrino interactions for supernova ( sn ) neutrinos , a new multi - azimuthal - angle ( maa ) instability would arise . in particular , for a flux ordering @xmath0 , as expected during th... | 253 |
nlin0504024 | the parameter dependence of the various attractive solutions of the three variable nonlinear lorenz model equations for thermal convection in rayleigh - bnard flow is studied . its bifurcation structure has commonly been investigated as a function of @xmath0 , the normalized rayleigh number , at fixed prandtl number @x... | 176 |
hep-ph9903418 | in an r - parity violating supersymmetric scenario , the lightest neutralino @xmath0 is no longer a stable particle . we calculate the branching ratio for the decay mode @xmath1 which occurs at the one - loop level . taking into account bilinear as well as trilinear lepton number violating interactions as the sources o... | 221 |
0806.1200 | we present the discovery of the vela - like radio pulsar j1856 + 0245 in the arecibo palfa survey . psr j1856 + 0245 has a spin period of 81ms , a characteristic age of 21kyr , and a spin - down luminosity @xmath0ergs s@xmath1 . it is positionally coincident with the tev @xmath2-ray source hess j1857 + 026 , which has ... | 170 |
hep-th0406034 | we study the einstein - yang - mills equations in a 6-dimensional space - time . we make a self - consistent static , spherically symmetric ansatz for the gauge fields and the metric . the metric of the manifold associated with the two extra dimensions contains off - diagonal terms . the classical equations are solved ... | 130 |
cond-mat0201209 | within dynamical mean - field theory , we study the metal - insulator transition of a twofold orbitally degenerate hubbard model as a function of a splitting @xmath0 of the degeneracy . the phase diagram in the @xmath1 plane exhibits two - band and one - band metals , as well as the mott insulator . the correlated two ... | 115 |
1412.5241 | we extend our previous analysis and consider the interacting holographic ricci dark energy ( irde ) model in non - flat universe . we study astrophysical constraints on this model using the recent observations including the type ia supernovae ( snia ) , the baryon acoustic oscillation ( bao ) , the cosmic microwave bac... | 113 |
astro-ph0010510 | the newly discovered supernova remnant g266.2@xmath01.2 ( rx j0852.00462 ) , along the line of sight to the vela snr , was observed with asca for 120 ks . we find that the x - ray spectrum is featureless , and well described by a power law , extending to three the class of shell - type snrs dominated by nonthermal x - ... | 233 |
cond-mat9911028 | the kramers theory of activated processes is generalized for nonequilibrium open one - dimensional systems . we consider both the internal noise due to thermal bath and the external noise which are stationary , gaussian and are characterized by arbitrary decaying correlation functions . we stress the role of a nonequil... | 102 |
hep-th9804210 | we consider string junctions with endpoints on a set of branes of iib string theory defining an @xmath0-type gauge lie algebra . we show how to characterize uniquely equivalence classes of junctions related by string / brane crossing through invariant charges that count the effective number of prongs ending on each bra... | 247 |
astro-ph0509562 | we analyze the x - ray spectrum of the quasar pg1211 + 143 observed with the ccd and grating spectrometers on board _ xmm - newton_. using an ion by ion fitting model we find an outflow component of about 3000 ^-1 kms@xmath0that includes absorption lines of k - shell and l - shell ions of the astrophysically abundant e... | 169 |
physics0512144 | we model the dynamics of social structure by a simple interacting particle system . the social standing of an individual agent is represented by an integer - valued fitness that changes via two offsetting processes . when two agents interact one advances : the fitter with probability @xmath0 and the less fit with proba... | 193 |
1005.1649 | in this article , i briefly review the status of infrared effects which occur when using inflationary models to calculate initial conditions for a subsequent hot , dense plasma phase . three types of divergence have been identified in the literature : secular , `` time - dependent '' logarithms , which grow with time s... | 146 |
1007.1920 | qcd - like theories possess a positively definite fermion determinant at finite baryon chemical potential @xmath0 and the lattice simulation can be successfully performed . while the chiral perturbation theories are sufficient to describe the bose condensate at low density , to describe the crossover from bose - einste... | 264 |
astro-ph0106106 | a model of a carbon - oxygen ( c o ) presupernova core with an initial mass @xmath0 , an initial carbon mass fraction @xmath1 , and with an average mass growth - rate @xmath2 due to accretion in a binary system was evolved from initial density @xmath3 , and temperature @xmath4k through convective core formation and its... | 276 |
cond-mat9911351 | we analyze the properties of the energy landscape of _ finite - size _ fully connected @xmath0-spin - like models whose high temperature phase is described , in the thermodynamic limit , by the schematic mode coupling theory of super - cooled liquids . we show that _ finite - size _ fully connected @xmath0-spin - like ... | 133 |
1105.4375 | a new method for solving numerically stochastic partial differential equations ( spdes ) with multiple scales is presented . the method combines a spectral method with the heterogeneous multiscale method ( hmm ) presented in [ w. e , d. liu , and e. vanden - eijnden , comm . pure appl . math . , 58(11):15441585 , 2005 ... | 181 |
1312.5797 | we investigate a scheduling scheme incorporating network coding and channel varying information for the two - way relay networks . our scheduler aims at minimizing the time span needed to send all the data of each source of the network . we consider three channel models , time invariant channels , time varying channels... | 165 |
1212.2647 | we consider the classical @xmath0-symmetric models confined in a @xmath1-dimensional slab - like geometry and subject to periodic boundary conditions . applying the one - particle - irreducible variant of functional renormalization group ( rg ) we compute the critical casimir forces acting between the slab boundaries .... | 139 |
1107.1583 | we study the effect of electron - vibron interactions on the inelastic transport properties of single - molecule nanojunctions . we use the non - equilibrium green s functions technique and a model hamiltonian to calculate the effects of second - order diagrams ( double - exchange dx and dressed - phonon dph diagrams )... | 175 |
1305.0643 | we perform advanced radiation leakage microscopy of routing dielectric - loaded plasmonic waveguiding structures . by direct plane imaging and momentum - space spectroscopy , we analyze the energy transfer between coupled waveguides as a function of gap distance and reveal the momentum distribution of curved geometries... | 113 |
1006.0643 | with the help of the mellin - barnes transform , we show how to simultaneously resum the expansion of a heavy - quark correlator around @xmath0 ( low - energy ) , @xmath1 ( threshold , where @xmath2 is the quark mass ) and @xmath3 ( high - energy ) in a systematic way . we exemplify the method for the perturbative vect... | 208 |
1702.02438 | we model quantum hall skyrmions in graphene monolayer at quarter filling by a theory of @xmath0 fields and study the energy minimizing skyrmions in presence of valley pseudospin anisotropy and zeeman coupling . we present a diagram of all types of skyrmions in a wide range of the anisotropy parameters . for each type o... | 213 |
1309.5466 | we provide an alternative method for analysis of multifractal properties of time series . the new approach takes into account the behavior of the whole multifractal profile of the generalized hurst exponent @xmath0 for all moment orders @xmath1 , not limited only to the edge values of @xmath0 describing in mfdfa scalin... | 160 |
astro-ph9807203 | the location of hii regions , which indicates the locus of present star formation in galaxies , is analyzed for a large collection of 110 irregular galaxies ( irr ) imaged in h@xmath0 and nearby continuum . the analysis is primarily by visual inspection , although a two - dimensional quantitative measure is also employ... | 140 |
1703.01821 | electrical impedance tomography ( eit ) provides functional images of an electrical conductivity distribution inside the human body . since the 1980s , many potential clinical applications have arisen using inexpensive portable eit devices . eit acquires multiple trans - impedance measurements across the body from an a... | 237 |
nucl-th0311060 | the role of rescattering due to the final state interaction ( fsi ) and the influence of the finite formation time ( fft ) on the inclusive @xmath0 and exclusive @xmath1 electro - disintegration of the deuteron are studied in the cumulative kinematical region @xmath2 and moderate values of the 4-momentum transfer @xmat... | 146 |
quant-ph0112164 | the eigenstate problem of the jaynes - cummings model on the basis of complete hamiltonian , including the center - of -mass kinetic energy operator , is treated . the energy spectrum and wave functions in standing - wave ( sw)- and counterpropagating waves ( cpw)- cases are calculated and compared with each other . it... | 215 |
math0509154 | graber , harris and starr proved , when @xmath0 , the irreducibility of the hurwitz space @xmath1 which parametrizes degree @xmath2 coverings of a smooth , projective curve @xmath3 of genus @xmath4 , simply branched in @xmath5 points , with full monodromy group @xmath6 . we sharpen this result and prove that @xmath1 is... | 159 |
1110.6334 | quantum computers , which process information encoded in quantum mechanical systems , hold the potential to solve some of the hardest computational problems . a substantial obstacle for the further development of quantum computers is the fact that the life time of quantum information is usually too short to allow pract... | 183 |
0812.0206 | we present experimental heat transport measurements of turbulent rayleigh - bnard convection with rotation about a vertical axis . the fluid , water with prandtl number ( @xmath0 ) about 6 , was confined in a cell which had a square cross section of 7.3 @xmath17.3 cm and a height of 9.4 cm . heat transport was measured... | 179 |
1008.4832 | @xcite found a very tight relationship between the f10.7 solar radio flux and the sunspot number and suggested using the flux for an objective calibration of the sunspot number . he suggested that if this relationship changed later on , the sunspot number should be re - calibrated , assuming that the calibration must h... | 107 |
0909.1973 | a generalized depolarizing channel acts on an @xmath0-dimensional quantum system to compress the `` bloch ball '' in directions ; it has a corresponding compression vector . we investigate the geometry of these compression vectors and prove a conjecture of dixit and sudarshan @xcite , namely that when ( i.e. the system... | 103 |
1308.1782 | we study the sensitivity of icecube / deepcore detector to dark matter annihilations in the earth core . we focus on annihilation modes @xmath0 , and @xmath1 . both track and cascade events are considered in our analysis . by fixing the dark matter annihilation cross section @xmath2 at some nominal values , we study th... | 270 |
1208.6133 | helices are a key folding motif in protein structure . the question which factors determine helix stability for a given polypeptide or protein is an ongoing challenge . here we use van der waals corrected density - functional theory to address a part of this question in a bottom - up approach . we show how intrinsic he... | 197 |
cond-mat0304645 | the ab - initio many - body method suggested in the preceding paper is applied to the 3d transition metals fe , co , ni , and cu . we use a linearized muffin - tin orbital calculation to determine bloch functions for the hartree one - particle hamiltonian , and from these obtain maximally localized wannier functions . ... | 219 |
0910.2249 | we report the detection of @xmath0-ray pulsations ( @xmath1 gev ) from psr j2229 + 6114 and psr j1048@xmath25832 , the latter having been detected as a low - significance pulsar by egret . data in the @xmath0-ray band were acquired by the large area telescope aboard the _ fermi gamma - ray space telescope _ , while the... | 253 |
hep-ph9909226 | infrared power corrections for the average thrust @xmath0 in @xmath1 annihilation are analyzed in the framework of renormalon resummation , motivated by analogy with the skeleton expansion in qed and the blm approach . performing the `` massive gluon '' renormalon integral a renormalization scheme invariant result is o... | 118 |
astro-ph0001150 | we use a stellar binary population synthesis code to find the lifetimes and velocities of several types of possible grb progenitors : double neutron stars , black hole neutron stars , black hole white dwarfs , helium star mergers . assuming that they are born in different types of galaxies we compute their spatial dist... | 105 |
1402.4732 | the episodic , irregular and asynchronous nature of medical data render them difficult substrates for standard machine learning algorithms . we would like to abstract away this difficulty for the class of time - stamped categorical variables ( or _ events _ ) by modeling them as a renewal process and inferring a probab... | 236 |
1406.1254 | in this paper we describe the integral transform that allows to write solutions of one partial differential equation via solution of another one . this transform was suggested by the author in the case when the last equation is a wave equation , and then it was used to investigate several well - known equations such as... | 166 |
hep-ph9707324 | we examine the leading order corrections to the nambu effective action for the motion of a cosmic string , which appear at fourth order in the ratio of the width to radius of curvature of the string . we determine the numerical coefficients of these extrinsic curvature corrections , and derive the equations of motion o... | 123 |
1401.4969 | a local and parallel algorithm based on the multilevel discretization is proposed in this paper to solve the eigenvalue problem by the finite element method . with this new scheme , solving the eigenvalue problem in the finest grid is transferred to solutions of the eigenvalue problems on the coarsest mesh and a series... | 153 |
astro-ph0301338 | the masses of supermassive black holes ( sbhs ) show correlations with bulge properties in disk and elliptical galaxies . we study the formation of galactic structure within flat - core _ triaxial _ haloes and show that these correlations can be understood within the framework of a baryonic component modifying the orbi... | 214 |
cond-mat0610377 | we study the two - qubit controlled - not gate operating on qubits encoded in the spin state of a pair of electrons in a double quantum dot . we assume that the electrons can tunnel between the two quantum dots encoding a single qubit , while tunneling between the quantum dots that belong to different qubits is forbidd... | 140 |
1107.3514 | we study the role resonant scattering plays in the transport of @xmath0 photons in accreting protoplanetary disk systems subject to varying degrees of dust settling . while the intrinsic stellar fuv spectrum of accreting t tauri systems may already be dominated by a strong , broad @xmath0 line ( @xmath180% of the fuv l... | 203 |
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