A scaling limit theorem for the parabolic Anderson model with exponential potential

Details A scaling limit theorem for the parabolic Anderson model with exponential potential A scaling limit theorem for the parabolic Anderson model with exponential potential

2010-09-24

arxiv.org/abs/1009.4862v1

Mathematics

Probability

In honour of J\"urgen G\"artner on the occasion of his 60th birthday

Scientific paper

The parabolic Anderson problem is the Cauchy problem for the heat equation with random potential and localized initial condition. In this paper we consider potentials which are constant in time and independent exponentially distributed in space. We study the growth rate of the total mass of the solution in terms of weak and almost sure limit theorems, and the spatial spread of the mass in terms of a scaling limit theorem. The latter result shows that in this case, just like in the case of heavy tailed potentials, the mass gets trapped in a single relevant island with high probability.

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