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# Yuri Bakhtin : Noisy heteroclinic networks: small noise asymptotics

I will start with the deterministic dynamics generated by a vector field that has several unstable critical points connected by heteroclinic orbits. A perturbation of this system by white noise will be considered. I will study the limit of the resulting stochastic system in distribution (under appropriate time rescaling) as the noise intensity vanishes. It is possible to describe the limiting process in detail, and, in particular, interesting non-Markov effects arise. There are situations where this result provides more precise exit asymptotics than the classical Wentzell-Freidlin theory.

**Category**: Applied Math and Analysis**Duration**: 01:14:46**Date**: November 5, 2007 at 4:25 PM**Views**: 157-
**Tags:**seminar, Applied Math And Analysis Seminar

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