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The Freidlin-Wentzell LDP with rapidly growing coefficients

Probability 2011-08-24 v1

Abstract

The Large Deviations Principle (LDP) is verified for a homogeneous diffusion process with respect to a Brownian motion BtB_t, Xt\eps=x0+0tb(Xs\eps)ds+\eps0tσ(Xs\eps)dBs, X^\eps_t=x_0+\int_0^tb(X^\eps_s)ds+ \eps\int_0^t\sigma(X^\eps_s)dB_s, where b(x)b(x) and σ(x)\sigma(x) are are locally Lipschitz functions with super linear growth. We assume that the drift is directed towards the origin and the growth rates of the drift and diffusion terms are properly balanced. Nonsingularity of a=σσ(x)a=\sigma\sigma^*(x) is not required.

Keywords

Cite

@article{arxiv.math/0605365,
  title  = {The Freidlin-Wentzell LDP with rapidly growing coefficients},
  author = {P. Chigansky and R. Liptser},
  journal= {arXiv preprint arXiv:math/0605365},
  year   = {2011}
}

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20 pages