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 Electronic Journal of Probability > Vol. 15(2010) > Paper 12 open journal systems 


Uniform estimates for metastable transition times in a coupled bistable system

Florent Barret, CMAP UMR 7641, École Polytechnique CNRS
Anton Bovier, Institut für Angewandte Mathematik, Rheinische Friedrich-Wilhelms-Universität
Sylvie Méléard, CMAP UMR 7641, École Polytechnique CNRS


Abstract
We consider a coupled bistable N-particle system on RN driven by a Brownian noise, with a strong coupling corresponding to the synchronised regime. Our aim is to obtain sharp estimates on the metastable transition times between the two stable states, both for fixed N and in the limit when N tends to infinity, with error estimates uniform in N. These estimates are a main step towards a rigorous understanding of the metastable behavior of infinite dimensional systems, such as the stochastically perturbed Ginzburg-Landau equation. Our results are based on the potential theoretic approach to metastability.


Full text: PDF

Pages: 323-345

Published on: April 9, 2010


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Electronic Journal of Probability. ISSN: 1083-6489