Energy landscapes in random systems, driven interfaces and wetting

E. T. Seppala; M. J. Alava

doi:10.1103/physrevlett.84.3982

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arXiv · cond-mat/0003067

Energy landscapes in random systems, driven interfaces and wetting

E. T. Seppala·M. J. Alava

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Abstract

We discuss the zero-temperature susceptibility of elastic manifolds with quenched randomness. It diverges with system size due to low-lying local minima. The distribution of energy gaps is deduced to be constant in the limit of vanishing gaps by comparing numerics with a probabilistic argument. The typical manifold response arises from a level-crossing phenomenon and implies that wetting in random systems begins with a discrete transition. The associated ``jump field'' scales as $ \sim L^{-5/3}$ and $L^{-2.2}$ for (1+1) and (2+1) dimensional manifolds with random bond disorder.

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E. T. Seppala, M. J. Alava. 2000-03-06. Energy landscapes in random systems, driven interfaces and wetting. https://doi.org/10.1103/physrevlett.84.3982

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