J. Phys. IV France
Volume 131, December 2005
Page(s) 189 - 190
Publié en ligne 18 janvier 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 189-190

DOI: 10.1051/jp4:2005131046

Non-equilibrium relaxation of an elastic string in random media

A.B. Kolton1, A. Rosso2 and T. Giamarchi1

1  Université de Genève, DPMC, 24 quai Ernest Ansermet, 1211 Genève 4, Switzerland
2  Laboratoire de Physique Théorique et Modèles Statistiques, CNRS UMR 8626, Bât. 100, Université Paris-Sud, 91405 Orsay Cedex, France

We study the relaxation of an elastic string in a two dimensional pinning landscape using Langevin dynamics simulations. The relaxation of a line, initially flat, is characterized by a growing length, L(t), separating the equilibrated short length scales from the flat long distance geometry that keep memory of the initial condition. We find that, in the long time limit, L(t) has a non-algebraic growth, consistent with thermally activated jumps over barriers with power law scaling, $U(L) \sim L^\theta$.

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