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Small random perturbations of finite- and infinite-dimensional dynamical systems: Unpredictability of exit times

Journal Article · · Journal of Statistical Physics; (USA)
DOI:https://doi.org/10.1007/BF01041595· OSTI ID:5394601
The authors apply previous results on the pathwise exponential loss of memory of the initial condition for stochastic differential equations with small diffusion to the problem of the asymptotic distribution of the first exit times from an attracted domain. They show under general hypotheses that the suitably rescaled exit time converges in the zero-noise limit to an exponential random variable. Then they extend the results to an infinite-dimensional case obtained by adding a small random perturbation to a nonlinear heat equation.
OSTI ID:
5394601
Journal Information:
Journal of Statistical Physics; (USA), Journal Name: Journal of Statistical Physics; (USA) Vol. 55:3-4; ISSN 0022-4715; ISSN JSTPB
Country of Publication:
United States
Language:
English