Showing papers in "Annals of Physics in 2002"

TL;DR: In this paper, a model of quantum computation with local fermionic modes (LFMs), sites which can be either empty or occupied by a fermion, was defined and the simulation cost was reduced to O(log m) and a constant.

TL;DR: In this paper, the notion of Slater rank for pure states of pairs of fermions and bosons in analogy to the Schmidt rank for pairs of distinguishable particles is introduced and a correlation measure for indistinguishable particles is provided.

TL;DR: In this article, the anomalous dimension of the operator corresponding to the elementary string excitation is calculated at the two-loop level and shown to have a finite limit when the R-charge J→∞ keeps λ/J2 finite.

TL;DR: In this paper, the compatibility between faster-than-c propagation and the fundamental principles of relativity and causality is investigated, and the Scharnhorst effect is shown to be the most plausible candidate for a physically sound realization of these phenomena.

TL;DR: In this article, the authors discussed the Landau problem in two similar but still different non-commutative frameworks: the standard one, where the coupling to the gauge field is achieved using Poisson brackets, yields all Landau levels.

TL;DR: In this paper, the spectrum, transition form factors, and B(Eλ) values of 12C are investigated and it is concluded that the low-lying spectrum can be described by three alpha-particles at the vertices of an equilateral triangle, but not as a rigid structure.

TL;DR: Oller et al. as discussed by the authors derived power counting rules for the calculation of in-medium pion properties and derived the so-called standard rules for residual nucleon energies of the order of the pion mass.

TL;DR: In this paper, a method for distinguishing non-equilibrium states admitting locally a thermodynamic interpretation is proposed, where the basic idea is to compare these states with global equilibrium states (KMS states) by means of local thermal observables.

TL;DR: In this article, the Dirac-Born-Infeld Lagrangian was used to describe a decaying tachyon on an unstable D-brane in string theory, and the time-dependent solutions of Einstein-Maxwell gravity in four dimensions coupled to tachyons were studied.

TL;DR: In this article, the authors derived an effective topological field theory model of the four dimensional quantum Hall liquid state using a generalization of the flux attachment transformation, which can be formulated as a U

TL;DR: In this paper, a detailed analysis of the variational principle for metric general relativity as applied to a quasilocal spacetime region M (that is, a region that is both spatially and temporally bounded) is presented.

TL;DR: In this paper, the authors encode dynamical symmetries of Born-Infeld theory in a geometry on the tangent bundle of generally curved spacetime manifolds, and derive a covariant formulation of a maximal acceleration extension of special and general relativity.

TL;DR: In this paper, the ground states and quantum phase transitions of two-dimensional, spin S = 1/2, antiferromagnets were explored by generalizing lattice models and duality transforms.

TL;DR: In this paper, the Ritus E p eigenfunction was extended to the case of spin-1 charged particles in a constant electromagnetic field and used to calculate the one-loop neutrino self-energy in the presence of a strong magnetic field.

TL;DR: In this article, the authors present evidence that tunneling processes in near-integrable systems are enhanced due to the manifestation of nonlinear resonances and their respective island chains in phase space.

TL;DR: In this article, an explicit evaluation of the classical continuum limit of the axial anomaly and index density of the overlap Dirac operator is carried out in the infinite volume setting and in a certain finite volume setting where the continuum limit involves an infinite volume limit.

TL;DR: In this paper, the proper time path integral representation for Green's functions in QCD is derived explicitly for nonperturbative contributions, yielding two types of expansions, illustrated by direct physical applications.

TL;DR: In this paper, a superspace Noether procedure for supersymmetric field theories in four dimensions for which an off-shell formulation in ordinary superspace exists has been developed and applied to compute the central charges for a variety of effective actions.

TL;DR: In this article, the Seiberg-Witten map from noncommuting to commuting variables is recognized as the quantum correspondent of the Lagrange to Euler map in fluid mechanics.

TL;DR: In this article, various measures of entanglement derived from the generalized entropies of the vector of Schmidt coefficients were analyzed and the causal structure of the set of pure states equivalent under local unitaries was shown to have a causal structure.

TL;DR: In this paper, the authors investigated the properties of the spectral properties of all the configurations of the MSSM spectrum in all 175 models and found that only twenty patterns of representations were found to be without anomalous U(1).

TL;DR: In this article, it was shown that the integrable billiard inside a prolate ellipsoid has an isolated singular point in its bifurcation diagram and exhibits classical and quantum monodromy.

TL;DR: In this article, the selfconsistent RPA (SCRPA) equations in the particle-particle channel were solved without any approximation for the picket fence model, and the results were in excellent agreement with the exact solutions found with the Richardson method.

TL;DR: In this paper, the authors considered the case of spinless Bosons distributed over l degenerate singleparticle states and interacting through a k -body random interaction with Gaussian probability distribution (the Bosonic embedded k-body ensembles).

TL;DR: In this article, the authors define a duality transformation which maps the spectrum of one quasi-exactly solvable (QES) periodic potential to that of another QES periodic potential.

TL;DR: The O(α 2 ) correction to the orthopositronium decay rate was calculated in this paper, and the resulting correction is 45.06(26) in units of (α/π) 2 times the lowest order rate.

TL;DR: In this article, relativistic, kinematically complete phenomenological expressions for the dilepton decay rates of nucleon resonances with arbitrary spin and parity are derived in terms of the magnetic, electric, and Coulomb transition form factors.

TL;DR: In this article, the steady-state physics of the classical lattice φ 4 theory in (1+1) dimensions is investigated from first principles and classified into dynamical regimes.

TL;DR: In this article, an electrostatic analogy for a wider class of integrable Hamiltonians with pairing force interactions was presented, and applied to obtain the exact thermodynamic limit of this class of models.

TL;DR: In this paper, a detailed and mainly geometric proof of a theorem by N. Nekhoroshev for hamiltonian systems in n degrees of freedom with k constants of motion in involution is given.