Quenched large deviations for multidimensional random walk in random environment: a variational formula

We take the point of view of the particle in a multidimensional nearest neighbor random walk in random environment (RWRE). We prove a quenched large deviation principle and derive a variational formula for the quenched rate function. Most of the previous results in this area rely on the subadditive...

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Bibliographic Details
Main Author Rosenbluth, Jeffrey M
Format Journal Article
LanguageEnglish
Published 09.04.2008
Subjects
Mathematics - Probability
Online AccessGet full text
DOI10.48550/arxiv.0804.1444

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Summary:We take the point of view of the particle in a multidimensional nearest neighbor random walk in random environment (RWRE). We prove a quenched large deviation principle and derive a variational formula for the quenched rate function. Most of the previous results in this area rely on the subadditive ergodic theorem. We employ a different technique which is based on a minimax theorem. Large deviation principles for RWRE have been proven for i.i.d. nestling environments subject to a moment condition and for ergodic uniformly elliptic environments. We assume only that the environment is ergodic and the transition probabilities satisfy a moment condition.
DOI:10.48550/arxiv.0804.1444