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arXiv 1602.00775math.PR
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临界渗流中化学距离的研究进展

Recent work on chemical distance in critical percolation

Michael Damron

摘要:

本文介绍作者J. Hanson和P. Sosoe [6,7]最近在二维临界渗流中化学距离问题上取得的一些进展。预期临界渗流簇中的点之间的距离按比例缩放为$\|\cdot \|^{1+s}$,其中$\|\cdot \|$是欧几里得距离,而$s>0$是欧几里得距离。首先,我们回顾了Aizenman-Burchard和Morrow-Zhang以前的工作,他们一起建立了一个版本的$0 < s \leq 1/3$。我们的主要工作是证明了$s$的上界,回答了文献[6]中Kesten-Zhang在'93中提出的关于盒的最短交叉长度与盒的最低交叉长度之比的问题.论文[7]提供了[6]结果的定量版本,以及点到点和点到集距离的界限。

英文摘要:

In this note, we describe some of the progress recently made on questions regarding the chemical distance in two-dimensional critical percolation by the author, J. Hanson, and P. Sosoe [6, 7]. It is expected that the distance between points in critical percolation clusters scales as $\|\cdot \|^{1+s}$, where $\|\cdot \|$ is the Euclidean distance and $s>0$. First, we review previous work of Aizenman-Burchard and Morrow-Zhang, which together establish a version of $0 < s \leq 1/3$. The main results of our work are in the direction of proving upper bounds on $s$, answering in [6] a question from '93 of Kesten-Zhang on the ratio of the length of the shortest crossing of a box to the length of the lowest crossing of a box. The paper [7] provides a quantitative version of the result of [6], along with bounds on point-to-point and point-to-set distances.

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