Journal
ANNALS OF PROBABILITY
Volume 48, Issue 1, Pages 296-316Publisher
INST MATHEMATICAL STATISTICS
DOI: 10.1214/19-AOP1361
Keywords
Random conductance model; invariance principle; stochastic homogenization; nonuniformly elliptic equations
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Funding
- German Science Foundation DFG [BE 5922/1-1]
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We consider the random conductance model in a stationary and ergodic environment. Under suitable moment conditions on the conductances and their inverse, we prove a quenched invariance principle for the random walk among the random conductances. The moment conditions improve earlier results of Andres, Deuschel and Slowik (Ann. Probab. 43 (2015) 1866-1891) and are the minimal requirement to ensure that the corrector is sublinear everywhere. The key ingredient is an essentially optimal deterministic local boundedness result for finite difference equations in divergence form.
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