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133 papers · 1 filter

cond-mat.stat-mech2003★ 59 cited

Macroscopic limit cycle via pure noise-induced phase transition

R. Kawai, X. Sailer, L. Schimansky-Geier +1

Bistability generated via a pure noise-induced phase transition is reexamined from the view of bifurcations in macroscopic cumulant dynamics. It allows an analytical study of the p…

hep-th2003★ 101 cited

D=4, N=2 Gauged Supergravity in the Presence of Tensor Multiplets

Riccardo D'Auria, Gianguido Dall'Agata, Luca Sommovigo +1

Using superspace techniques we construct the general theory describing D=4, N=2 supergravity coupled to an arbitrary number of vector and scalar--tensor multiplets. The scalar mani…

hep-th2003★ 19 cited

A Gravity Dual of Chiral Symmetry Breaking

J. Babington, J. Erdmenger, N. Evans +2

We establish a holographic description of chiral symmetry breaking for a particular confining large N non-supersymmetric gauge theory with matter in the fundamental representation.…

cond-mat.str-el2003★ 6 cited

Proper weak-coupling approach to the periodic s-d(f) exchange model

T. Hickel, W. Nolting

The periodic s-d(f) exchange model is characterized by a wide variety of interesting applications, a simple mathematical structure and a limited number of reliable approximations w…

cond-mat2003★ 245 cited

Dephasing in Quantum Dots: Quadratic Coupling to Acoustic Phonons

E. A. Muljarov, R. Zimmermann

A microscopic theory of optical transitions in quantum dots with carrier-phonon interaction is developed. Virtual transitions into higher confined states with acoustic phonon assis…

math.OA2003

Purely infinite C*-algebras: ideal-preserving zero homotopies

Eberhard Kirchberg, Mikael Rordam

We show that if A is a separable, nuclear, O_infty-absorbing (or strongly purely infinite) C*-algebra, which is homotopic to zero in an ideal-system preserving way, then A is the i…

hep-lat2003

General chiral gauge theories

Werner Kerler

Only requiring that Dirac operators decribing massless fermions on the lattice decompose into Weyl operators we arrive at a large class of them. After deriving general relations fr…

cond-mat.stat-mech2003★ 41 cited

Estimating Driving Forces of Nonstationary Time Series with Slow Feature Analysis

Laurenz Wiskott

Slow feature analysis (SFA) is a new technique for extracting slowly varying features from a quickly varying signal. It is shown here that SFA can be applied to nonstationary time…

hep-th2003★ 10 cited

Loop Equation in Two-dimensional Noncommutative Yang-Mills Theory

Harald Dorn, Alessandro Torrielli

The classical analysis of Kazakov and Kostov of the Makeenko-Migdal loop equation in two-dimensional gauge theory leads to usual partial differential equations with respect to the…

hep-th2003★ 79 cited

N=1 geometries for M-theory and type IIA strings with fluxes

Gianguido Dall'Agata, Nikolaos Prezas

We derive a set of necessary and sufficient conditions for obtaining N=1 backgrounds of M-theory and type IIA strings in the presence of fluxes. Our metrics are warped products of…

cond-mat.supr-con2003★ 6 cited

On details of the thermodynamical derivation of the Ginsburg--Landau equations

A. V. Dmitriev, W. Nolting

We examine the procedure of thermodynamical derivation of the Ginsburg--Landau equation for current, which is given unclear and contradictory interpretations in existing textbooks.…

hep-th2003★ 9 cited

E11 and Spheric Vacuum Solutions of Eleven- and Ten dimensional Supergravity Theories

Igor Schnakenburg, Andre Miemiec

In view of the newly conjectured Kac-Moody symmetries of supergravity theories placed in eleven and ten dimensions, the relation between these symmetry groups and possible compacti…

hep-lat2003★ 149 cited

The nucleon mass in N_f=2 lattice QCD: finite size effects from chiral perturbation theory

A. Ali Khan, T. Bakeyev, M. Göckeler +8

In the framework of relativistic SU(2)_f baryon chiral perturbation theory we calculate the volume dependence of the nucleon mass up to and including O(p^4). Since the parameters i…

hep-lat2003★ 13 cited

Lattice simulations of 2-colour QCD with Wilson fermions

Jon-Ivar Skullerud, Shinji Ejiri, Simon Hands +1

We report on the status of our simulations of two-colour QCD with two flavours of Wilson quarks, at nonzero chemical potential and diquark source. Preliminary results are presented…

hep-lat2003★ 2 cited

SO(3) vs. SU(2) Yang-Mills theory on the lattice: an investigation at non-zero temperature

A. Barresi, G. Burgio, M. Muller-Preussker

The adjoint SU(2) lattice gauge theory in 3+1 dimensions with the Wilson plaquette action modified by a Z(2) monopole suppression term is reinvestigated with special emphasis on th…

hep-th2003★ 19 cited

Correlation Functions and Vertex Operators of Liouville Theory

George Jorjadze, Gerhard Weigt

We calculate correlation functions for vertex operators with negative integer exponentials of a periodic Liouville field, and derive the general case by continuing them as distribu…

hep-lat2003★ 4 cited

The photon propagator in compact QED_{2+1}: the effect of wrapping Dirac strings

M. N. Chernodub, E. -M. Ilgenfritz, A. Schiller

We discuss the influence of closed Dirac strings on the photon propagator in the Landau gauge emerging from a study of the compact U(1) gauge model in 2+1 dimensions. This gauge al…

cond-mat.stat-mech2003★ 8 cited

Kinetic Integrals in the Kinetic Theory of dissipative gases

Thorsten Poeschel, Nikolai V. Brilliantov

The kinetic theory of gases, including Granular Gases, is based on the Boltzmann equation. Many properties of the gas, from the characteristics of the velocity distribution functio…

cond-mat.stat-mech2003★ 20 cited

Stochastic resonance in a non Markovian discrete state model for excitable systems

T. Prager, L. Schimansky-Geier

We study a non Markovian three state model, subjected to an external periodic signal. This model is intended to describe an excitable systems with periodical driving. In the limit…

hep-th2003★ 18 cited

Higher order loop equations for A_r and D_r quiver matrix models

Stefano Chiantese, Albrecht Klemm, Ingo Runkel

We use free boson techniques to investigate A-D-E-quiver matrix models. Certain higher spin fields in the free boson formulation give rise to higher order loop equations valid at f…

hep-th2003★ 6 cited

Type IIA on a Compact Calabi-Yau and D=11 Supergravity Uplift of its Orientifold

Aalok Misra

Using the prescription of [1] for defining period integrals in the Landau-Ginsburg theory for compact Calabi-Yau's, we obtain the Picard-Fuchs equation and the Meijer basis of solu…

hep-th2003★ 27 cited

Tachyon Condensation for Intersecting Branes at Small and Large Angles

F. Epple, D. Lust

We review the worldsheet analysis for intersecting branes with focus on small and large angles. For small angles, we review the Yang-Mills fluctuation analysis in hep-th/0303204 an…

hep-th2003★ 49 cited

Fluxes in M-theory on 7-manifolds: G-structures and Superpotential

Klaus Behrndt, Claus Jeschek

We consider compactifications of M-theory on 7-manifolds in the presence of 4-form fluxes, which leave at least four supercharges unbroken. We focus especially on the case, where t…

hep-lat2003★ 51 cited

Axial Correlation Functions in the epsilon-Regime: a Numerical Study with Overlap Fermions

W. Bietenholz, T. Chiarappa, K. Jansen +2

We present simulation results employing overlap fermions for the axial correlation functions in the epsilon-regime of chiral perturbation theory. In this regime, finite size effect…