Non–equilibrium relaxation of an elastic string in random media

A.B. KOLTON, A. ROSSO, T. GIAMARCHI

JOURNAL DE PHYSIQUE IV

EDP Sciences

Año: 2005 vol. 131 p. 189 - 190

1155-4339

We study the relaxation of an elastic string in a two dimensional pinning landscape using Langevindynamics 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 ofthe initial condition. We find that, in the long time limit, L(t) has a non–algebraic growth, consistent withthermally activated jumps over barriers with power law scaling, U(L) ∼ L^{\theta} .