FRONT PROPAGATION IN RANDOM MEDIA: FROM EXTREMAL TO ACTIVATED DYNAMICS

Rune Skoe, Damien Vandembroucq and Stéphane Roux
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Rune Skoe: Unité Mixte CNRS/Saint-Gobain "Surface du Verre et Interfaces", 39 Quai Lucien Lefranc, 93303 Aubervilliers Cedex, France
Damien Vandembroucq: Unité Mixte CNRS/Saint-Gobain "Surface du Verre et Interfaces", 39 Quai Lucien Lefranc, 93303 Aubervilliers Cedex, France
Stéphane Roux: Unité Mixte CNRS/Saint-Gobain "Surface du Verre et Interfaces", 39 Quai Lucien Lefranc, 93303 Aubervilliers Cedex, France

International Journal of Modern Physics C (IJMPC), 2002, vol. 13, issue 06, 751-757

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.

Keywords: Depinning; creep; fracture; quenched disorder (search for similar items in EconPapers)
Date: 2002
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DOI: 10.1142/S0129183102003565

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