scispace - formally typeset
Search or ask a question

Showing papers in "Annals of Physics in 2003"


Journal ArticleDOI
TL;DR: A two-dimensional quantum system with anyonic excitations can be considered as a quantum computer Unitary transformations can be performed by moving the excitations around each other Unitary transformation can be done by joining excitations in pairs and observing the result of fusion.

4,920 citations


Journal ArticleDOI
TL;DR: In this article, the authors introduce a technique for restoring general coordinate invariance into theories where it is explicitly broken, which is the analog for gravity of the Callan-Coleman-Wess-Zumino formalism for gauge theories.

874 citations


Journal ArticleDOI
TL;DR: In this article, short and semi-short representations for N =2 and N =4 superconformal symmetry in four dimensions are discussed. And the representation content of short and semisupershort multiplets arising at the unitarity threshold for long multiplets is discussed.

451 citations


Journal ArticleDOI
TL;DR: In this article, the authors studied the ±J random-plaquette Z-2 gauge model (RPGM) in three dimensions, a three-dimensional analog of the two-dimensional random-bonding Ising model (RBIM), and measured the critical concentration p_c of wrong-sign plaquettes at the confinement-Higgs phase transition along the Nishimori line.

257 citations


Journal ArticleDOI
TL;DR: A simple and accessible method which uses contour integration methods to derive formulae for functional determinants where zero modes exist, but have been excluded is presented.

169 citations


Journal ArticleDOI
TL;DR: When the gravitational Chern-Simons term is reduced from 3 to 2 dimensions, the lower dimensional theory supports a symmetry breaking solution and an associated kink as mentioned in this paper, which bears a close relation to flat-space kinks governed by identical potentials.

151 citations


Journal ArticleDOI
TL;DR: In this article, the one-loop vacuum polarization from massless, minimally coupled scalar QED in a locally de Sitter background is computed and a fully renormalized result is obtained.

138 citations


Journal ArticleDOI
TL;DR: The LIGO (Laser Interferometer Gravitational-Wave Observatory) detectors have just completed their first science run, following many years of planning, research, and development as mentioned in this paper.

107 citations


Journal ArticleDOI
TL;DR: In this article, the authors show that the massless particle in d-dimensional Minkowski space can be treated as the system confined to the border of the AdSd+1 of infinite radius, while various nonrelativistic systems may be canonically related to a relativistic (massless, massive, or tachyon) particle on the adS2−×−Sd−1.

107 citations


Journal ArticleDOI
TL;DR: In this article, the authors consider the problem of fitting a particle to an arbitrary manifold embedded in a higher-dimensional Euclidean space and provide simple expressions for the induced-scalar potential.

104 citations


Journal ArticleDOI
TL;DR: In this article, the Darboux transformation operator is applied to the Dirac equation and the following aspects are investigated: factorization of a polynomial of Dirac Hamiltonians, quadratic supersymmetry, closed extension of transformation operators, chains of transformations, and finally particular cases of pseudoscalar and scalar potentials.

Journal ArticleDOI
TL;DR: An O (a 4 ) -improved lattice version of the continuum field-strength tensor is derived via the combination of several clover terms of various sizes, complemented by tadpole improvement.

Journal ArticleDOI
TL;DR: In this article, the real time evolution and relaxation of expectation values of quantum fields and of quantum states are computed as initial value problems by implementing the dynamical renormalization group (DRG).

Journal ArticleDOI
TL;DR: In this article, the one-loop corrected low-energy effective gauge couplings in a unified theory, broken at the scale MGUT in the bulk, were shown to have a robust logarithmic dependence on MGUT.

Journal ArticleDOI
TL;DR: In this paper, a class of D-branes for the type IIB plane-wave background is considered that preserve half the dynamical supersymmetries of the light-cone gauge.

Journal ArticleDOI
TL;DR: In this article, the Kaluza-Klein reduction of the 3D gravitational Chern-Simons term to a 2D theory is equivalent to a Poisson-sigma model with 4d target space and degenerate Poisson tensor of rank 2.

Journal ArticleDOI
TL;DR: In this paper, the Lagrangian density of the gauge field depends on the curvature of the connection which can be calculated from the holonomy around (infinitesimal) loops.

Journal ArticleDOI
TL;DR: In this paper, the exact expression for the width fluctuation correction factor, obtained with the Gaussian orthogonal ensemble (GOE) approach, has been implemented computationally to describe a nuclear reaction for any open channel.

Journal ArticleDOI
TL;DR: The Trojan-Horse method as mentioned in this paper is an indirect approach to determine the energy dependence of S factors of astrophysically relevant two-body reactions under quasi-free scattering conditions.

Journal ArticleDOI
TL;DR: In this paper, the authors investigated the asymptotic dynamics of topological anti-de Sitter supergravity in two dimensions and showed that the AdS2 boundary conditions imply that the symmetries form a super-Virasoro algebra.

Journal ArticleDOI
TL;DR: In this paper, the authors revisited the paradigm of the two-level atom and its perturbative analysis is discussed in view of the principle of duality in perturbation theory.

Journal ArticleDOI
Wayne Hu1
TL;DR: In this paper, the authors review the acoustic phenomenology that forms the cornerstone of the standard cosmological model and discuss internal consistency relations which lend credence to its interpretation, and discuss future milestones in the study of CMB anisotropy that have implications for inflationary and dark energy models.

Journal ArticleDOI
TL;DR: In this article, the authors proposed an alternative model for the physics at the scale of gauge coupling unification, where the unified symmetry is realized in higher dimensions but is broken locally by a symmetry breaking defect.

Journal ArticleDOI
TL;DR: In this article, the authors show how to calculate the Finkelstein-Rubinstein constraints directly from the rational map ansatz using basic homotopy theory and apply this construction in order to quantize the Skyrme model in the simplest approximation, the zero mode quantization.

Journal ArticleDOI
TL;DR: In this article, the effective potential of an on-shell BRST invariant gluon-ghost condensate of mass dimension 2 in the Curci-Ferrari gauge in SU(N) Yang-Mills was analyzed by combining the local composite operator technique with the algebraic renormalization.

Journal ArticleDOI
TL;DR: In this paper, the N = 2 supersymmetric extension of the Schrodinger Hamiltonian with 1/r-potential in arbitrary space-dimensions is constructed, where the super-symmetric hydrogen atom admits a conserved Laplace-Runge-Lenz vector which extends the rotational symmetry SO(d) to a hidden SO (d+1) symmetry.

Journal ArticleDOI
Dirk Kreimer1
TL;DR: In this article, the authors present mathematical structures in renormalizable perturbative quantum field theories which go way beyond the formal structure which is usually taken as underlying quantum field theory.

Journal ArticleDOI
TL;DR: In this paper, the authors explore aspects of the physics of de Sitter (dS) space that are relevant to holography with a positive cosmological constant and show that a holographic dual description of dS space would involve a pure entangled state in a product of two unconventional conformal field theory (CFTs associated with the dS boundaries).

Journal ArticleDOI
TL;DR: In this article, two ways of introducing minimal Abelian gauge interactions into the model presented in [Ann. Phys. 260 (1997) 224] were considered, one leading to the standard gauge transformations and the other leading to a generalised gauge theory with gauge transformations accompanied by time-dependent area-preserving coordinate transformations.

Journal ArticleDOI
TL;DR: In this article, the authors studied the time-dependence of the quantum pendulum problem, focusing on the behavior of both the approximate classical periodicity and especially the quantum revival and superrevival times, as encoded in the energy eigenvalue spectrum of the system.