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arXiv 2009.11535math.PRmath.AP
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非一致抛物型方程及其在随机电导模型中的应用

Non-uniformly parabolic equations and applications to the random conductance model

Peter Bella, Mathias Schäffner

摘要:

研究了$\mathbb Z^d$上与随机电导模型相关的线性非一致抛物型散度型有限差分算子的局部正则性。特别是,我们提供了一个振荡衰减假设只有某些求和性能的电导和他们的逆,从而改善最近的结果在这个方向上。作为应用,我们给出了退化无界环境中随机游动的一个局部极限定理。

英文摘要:

We study local regularity properties of linear, non-uniformly parabolic finite-difference operators in divergence form related to the random conductance model on $\mathbb Z^d$. In particular, we provide an oscillation decay assuming only certain summability properties of the conductances and their inverse, thus improving recent results in that direction. As an application, we provide a local limit theorem for the random walk in a random degenerate and unbounded environment.

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