FRONT PROPAGATION IN RANDOM MEDIA: FROM EXTREMAL TO ACTIVATED DYNAMICS

Author:

SKOE RUNE1,VANDEMBROUCQ DAMIEN1,ROUX STÉPHANE1

Affiliation:

1. Unité Mixte CNRS/Saint-Gobain "Surface du Verre et Interfaces", 39 Quai Lucien Lefranc, 93303 Aubervilliers Cedex, France

Abstract

Front propagation in a random environment is studied close to the depinning threshold. At zero temperature we show that the depinning force distribution exhibits a universal behavior. This property is used to estimate the velocity of the front at very low temperature. We obtain a Arrhenius behavior with a prefactor depending on the temperature as a power law. These results are supported by numerical simulations.

Publisher

World Scientific Pub Co Pte Lt

Subject

Computational Theory and Mathematics,Computer Science Applications,General Physics and Astronomy,Mathematical Physics,Statistical and Nonlinear Physics

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