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arXiv 2105.09030math.PR
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超临界定向逾渗集团骨架上定向随机游动的局部极限定理

Local limit theorems for a directed random walk on the backbone of a supercritical oriented percolation cluster

Stein Andreas Bethuelsen, Matthias Birkner, Andrej Depperschmidt, Timo Schlüter

摘要:

我们认为,有向随机游动的超临界定向渗流簇的尺寸$d+1$与$d \ge 3$的空间维度的骨干。对于这种随机游动,我们证明了一个退火的局部中心极限定理和一个淬火的局部极限定理。后者表明,猝灭的跃迁概率的随机游动收敛到退火的转移概率重新加权的功能的媒体集中在目标网站。这个函数是唯一测度的密度,它对于粒子的观点是不变的,相对于退火测度是绝对连续的,并且满足一定的浓度性质。

英文摘要:

We consider a directed random walk on the backbone of the supercritical oriented percolation cluster in dimensions $d+1$ with $d \ge 3$ being the spatial dimension. For this random walk we prove an annealed local central limit theorem and a quenched local limit theorem. The latter shows that the quenched transition probabilities of the random walk converge to the annealed transition probabilities reweighted by a function of the medium centred at the target site. This function is the density of the unique measure which is invariant for the point of view of the particle, is absolutely continuous with respect to the annealed measure and satisfies certain concentration properties.

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