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arXiv 0907.2434math.PRmath-phmath.MP
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长程逾渗团的热核上界

Heat Kernel Upper Bounds on Long Range Percolation Clusters

Nicholas Crawford, Allan Sly

摘要:

本文给出了超临界长程逾渗过程无穷簇上简单随机游动热核的上界。对于任何$d \geq 1$和任何指数$s \in (d, (d+2) \wedge 2d)$给出的渗滤过程的衰减率,我们表明,返回概率衰减像$t^{-\ffrac{d}{s-d}}$对数校正,其中$t$表示的时间行走运行。此外,我们的方法也产生广义的动力学的谱隙和最大的组件在一个盒子的直径上的界限。除了其内在的兴趣,主要结果是需要一个同伴的文件研究的标度极限的简单随机游动的无限集群。

英文摘要:

In this paper, we derive upper bounds for the heat kernel of the simple random walk on the infinite cluster of a supercritical long range percolation process. For any $d \geq 1$ and for any exponent $s \in (d, (d+2) \wedge 2d)$ giving the rate of decay of the percolation process, we show that the return probability decays like $t^{-\ffrac{d}{s-d}}$ up to logarithmic corrections, where $t$ denotes the time the walk is run. Moreover, our methods also yield generalized bounds on the spectral gap of the dynamics and on the diameter of the largest component in a box. Besides its intrinsic interest, the main result is needed for a companion paper studying the scaling limit of simple random walk on the infinite cluster.

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