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Quenched invariance principle for random walks among random degenerate conductances

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arxiv 1902.05793 v1 pith:CRIPWVS6 submitted 2019-02-15 math.PR math.AP

classification math.PRmath.AP
keywords randomconductancesconditionsinvariancemomentprinciplequenchedandres
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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.] 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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  1. A Liouville principle for the random conductance model under degenerate conditions

    math.AP 2019-08 conditional novelty 6.0 of 10

    For stationary ergodic conductances on Z^d with a (p,q)-moment condition and reflection invariance, the space of harmonic functions growing slower than |x|^(1+alpha) has dimension d+1.

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