Scaling Limit for the Diffusion Exit Problem

Details Scaling Limit for the Diffusion Exit Problem Scaling Limit for the Diffusion Exit Problem

2011-10-11

arxiv.org/abs/1110.2302v1

Mathematics

Probability

arXiv admin note: substantial text overlap with arXiv:1006.2766 and arXiv:1006.3000

Scientific paper

The objective of this dissertation is to prove a scaling limit for the exit of a domain problem of a small noise system with underlying hyperbolic dynamics. In this case, Large Deviation kind of estimates fail to provide a complete picture of the dynamics of the system under consideration. This is so because the rate function given by the Large Deviation Principle has several minimizing trajectories hence making them indistinguishable at the exponential level. We propose a pathwise approach based on the theory of normal forms combined with geometrical arguments. We prove a scaling limits and provide the state of the art results in related problems.

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