Small noise asymptotic of the Gallavotti-Cohen functional for diffusion processes

Details Small noise asymptotic of the Gallavotti-Cohen functional for diffusion processes Small noise asymptotic of the Gallavotti-Cohen functional for diffusion processes

2010-04-14

arxiv.org/abs/1004.2371v1

Mathematics

Probability

20 pages

Scientific paper

We consider, for a diffusion process in R^n, the Gallavotti-Cohen functional, defined as the empirical power dissipated in a time interval by the non-conservative part of the drift. We prove a large deviation principle in the limit in which the noise vanishes and the time interval diverges. The corresponding rate functional, which satisfies the fluctuation theorem, is expressed in terms of a variational problem on the classical Freidlin-Wentzell functional.

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