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arXiv 1910.04449math.PR
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猝灭Bernoulli障碍中生存条件下的随机游动分布

Distribution of the random walk conditioned on survival among quenched Bernoulli obstacles

Jian Ding, Ryoki Fukushima, Rongfeng Sun, Changji Xu

摘要:

在$\mathbb Z^d$的每个顶点独立放置一个概率为$1-p$的障碍物,并考虑一个简单的对称随机游动,它在击中其中一个障碍物时被杀死。对于$d \geq 2$和$p$严格高于临界阈值的网站渗透,我们的条件的环境,使原产地包含在一个无限的连接组件的障碍。先前已经表明,以高概率为条件的存活时间$n$的随机游动将渐近地定位在体积球$d\log_{1/p}n$中。在这项工作中,我们证明了这个球是免费的障碍,我们得到的限制一次性分布的随机游动条件下生存。我们的证明是基于障碍的修改和估计,这种修改如何影响的概率的障碍配置以及其相关的狄利克雷特征值,这是独立的利益。

英文摘要:

Place an obstacle with probability $1-p$ independently at each vertex of $\mathbb Z^d$ and consider a simple symmetric random walk that is killed upon hitting one of the obstacles. For $d \geq 2$ and $p$ strictly above the critical threshold for site percolation, we condition on the environment such that the origin is contained in an infinite connected component free of obstacles. It has previously been shown that with high probability, the random walk conditioned on survival up to time $n$ will be localized in a ball of volume asymptotically $d\log_{1/p}n$. In this work, we prove that this ball is free of obstacles, and we derive the limiting one-time distributions of the random walk conditioned on survival. Our proof is based on obstacle modifications and estimates on how such modifications affect the probability of the obstacle configurations as well as their associated Dirichlet eigenvalues, which is of independent interest.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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