Sharp asymptotics for metastability in the random field Curie-Weiss model

Details Sharp asymptotics for metastability in the random field Curie-Weiss model Sharp asymptotics for metastability in the random field Curie-Weiss model

2008-06-27

arxiv.org/abs/0806.4478v1

Mathematics

Probability

56 pages, 5 figures

Scientific paper

In this paper we study the metastable behavior of one of the simplest disordered spin system, the random field Curie-Weiss model. We will show how the potential theoretic approach can be used to prove sharp estimates on capacities and metastable exit times also in the case when the distribution of the random field is continuous. Previous work was restricted to the case when the random field takes only finitely many values, which allowed the reduction to a finite dimensional problem using lumping techniques. Here we produce the first genuine sharp estimates in a context where entropy is important.

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