Nom de l’auteur/autrice :admin

Apoorva Nagar 1, Satya N. Majumdar 2, Mustansir Barma 1 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 74 (2006) 021124 We study the clustering of passive, non-interacting particles moving under the influence of a fluctuating field and random noise, in one dimension. The fluctuating field in our case is provided by a surface governed by the Kardar-Parisi-Zhang (KPZ) equation […]

Sanjib Sabhapandit 1, 2, Satya N. Majumdar 1, Alain Comtet 1, 2 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 73 (2006) 051102 We present a formalism for obtaining the statistical properties of functionals and inverse functionals of the paths of a particle diffusing in a one-dimensional quenched random potential. We demonstrate the implementation of the formalism in two specific examples: (1)

Thierry Mora 1, Olivier Rivoire 2 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 74 (2006) 056110 Error exponents characterize the exponential decay, when increasing message length, of the probability of error of many error-correcting codes. To tackle the long standing problem of computing them exactly, we introduce a general, thermodynamic, formalism that we illustrate with maximum-likelihood decoding

Ioana Bena 1, Francois Coppex 1, Michel Droz 1, Paolo Visco 2, 3, Emmanuel Trizac 2, Frederic van Wijland 4 Physica A 370 (2006) 179-189 We consider the characterization of the nonequilibrium stationary state of a randomly-driven granular gas in terms of an entropy-production based variational formulation. Enforcing spatial homogeneity, we first consider the temporal stability of the stationary state reached after a transient. In connection, two heuristic

Ribhu K. Kaul 1, 2, Gergely Zaránd 3, 4, Shailesh Chandrasekharan 1, Denis Ullmo 1, 5, Harold U. Baranger 1 Physical Review Letters 96 (2006) 176802 Motivated by experiments on double quantum dots, we study the problem of a single magnetic impurity confined in a finite metallic host. We prove an exact theorem for the ground state spin, and use analytic and numerical arguments to map out the

B. Dietz 1, A. Heine 1, A. Richter 1, O. Bohigas 2, P. Leboeuf 2 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 73 (2006) 035201 We present experimental results on the eigenfrequency statistics of a superconducting, chaotic microwave billiard containing a rotatable obstacle. Deviations of the spectral fluctuations from predictions based on Gaussian orthogonal ensembles of random matrices are found. They are explained

Satya N. Majumdar 1, Chandan Dasgupta 2 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 73 (2006) 011602 We report numerical and analytic results for the spatial survival probability for fluctuating one-dimensional interfaces with Edwards-Wilkinson or Kardar-Parisi-Zhang dynamics in the steady state. Our numerical results are obtained from analysis of steady-state profiles generated by integrating a spatially discretized

Alejandro B. Kolton 1, Alberto Rosso 2, Ezequiel V. Albano 3, Thierry Giamarchi 1 Physical Review B 74 (2006) 140201 We study numerically the relaxation of a driven elastic string in a two dimensional pinning landscape. The relaxation of the string, initially flat, is governed by a growing length $L(t)$ separating the short steady-state equilibrated lengthscales, from the large lengthscales that keep memory

Richard Oberdorf 1, Allison Ferguson 1, Jesper L. Jacobsen 2, 3, Jane’ Kondev 1 Physical Review E: Statistical, Nonlinear, and Soft Matter Physics 74 (2006) 051801 Compact polymers are self-avoiding random walks which visit every site on a lattice. This polymer model is used widely for studying statistical problems inspired by protein folding. One difficulty with using compact polymers to perform numerical calculations is

Marc Mezard 1, Andrea Montanari 2 Journal of Statistical Physics 124 (2006) 1317-1350 Consider an information source generating a symbol at the root of a tree network whose links correspond to noisy communication channels, and broadcasting it through the network. We study the problem of reconstructing the transmitted symbol from the information received at the leaves. In the large