Random walks and Brownian motion:: A method of computation for first-passage times and related quantities in confined geometries

Random walks and Brownian motion:: A method of computation for first-passage times and related quantities in confined geometries
复制标题

DOI:
10.1103/physreve.75.021111
复制
发表时间:
2007-02-01
期刊:
影响因子:
2.4
通讯作者:
Moreau, M.
Moreau, M.
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Condamin, S.;Benichou, O.;Moreau, M.

文献摘要

被引文献

相似文献

在本文中,我们提出了一个计算的平均首次通过时间的随机游动在一个离散的有界格,在一个起始点和一个目标网站之间,和布朗运动在一个有界域,其中的目标是一个球。在这两种情况下,我们还讨论了两个目标的情况下,包括分裂概率和条件平均首次通过时间。此外,我们还研究了高阶矩和首达时间的全分布。这些结果显著地扩展了我们早期的贡献[Condamin,Phys. Rev. Lett. 95,260601(2005)]。
In this paper we present a computation of the mean first-passage times both for a random walk in a discrete bounded lattice, between a starting site and a target site, and for a Brownian motion in a bounded domain, where the target is a sphere. In both cases, we also discuss the case of two targets, including splitting probabilities and conditional mean first-passage times. In addition, we study the higher-order moments and the full distribution of the first-passage time. These results significantly extend our earlier contribution [Condamin , Phys. Rev. Lett. 95, 260601 (2005)].