Large deviations for the local times of a random walk among random conductances

Details Large deviations for the local times of a random walk among random conductances Large deviations for the local times of a random walk among random conductances

2011-04-08

arxiv.org/abs/1104.1548v1

Mathematics

Probability

12 pages

Scientific paper

We derive an annealed large deviation principle for the normalised local times of a continuous-time random walk among random conductances in a finite domain in $\Z^d$ in the spirit of Donsker-Varadhan \cite{DV75}. We work in the interesting case that the conductances may assume arbitrarily small values. Thus, the underlying picture of the principle is a joint strategy of small values of the conductances and large holding times of the walk. The speed and the rate function of our principle are explicit in terms of the lower tails of the conductance distribution. As an application, we identify the logarithmic asymptotics of the lower tails of the principal eigenvalue of the randomly perturbed negative Laplace operator in the domain.

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