Front propagation in random media: From extremal to activated dynamics

Details Front propagation in random media: From extremal to activated dynamics Front propagation in random media: From extremal to activated dynamics

2002-03-07

arxiv.org/abs/cond-mat/0203158v1

Int. J. Mod. Phys. C 13, 751-757, (2002)

Physics

Condensed Matter

Disordered Systems and Neural Networks

6 pages, 2 figures, accepted in Int. J. Mod. Phys. C

Scientific paper

10.1142/S0129183102003565

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.

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