Metastable Behaviour of Small Noise Levy-Driven Diffusions

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We consider a dynamical system in R driven by a vector field -U', where U is a multi-well potential satisfying some regularity conditions. We perturb this dynamical system by a Levy noise of small intensity and such that the heaviest tail of its Levy measure is regularly varying. We show that the perturbed dynamical system exhibits metastable behaviour i.e. on a proper time scale it reminds of a Markov jump process taking values in the local minima of the potential U. Due to the heavy-tail nature of the random perturbation, the results differ strongly from the well studied purely Gaussian case.
33 pages

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Probability, 60E07; 60F10

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http://salesiana.dossiersoluciones.com/handle/123456789/107782

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/math/0601771
 http://arxiv.org/abs/math/0601771

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arXiv