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arXiv 2003.08187math.PRmath.COmath.DG
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Dirichlet随机游动

The Dirichlet random walk

Adrien Boulanger, Olivier Glorieux

摘要:

本文定义并研究了紧致流形上伽罗瓦覆盖上的一个随机过程。通过在前一个过程的Dirichlet域中均匀地选取一个点,递归地定义过程的连续位置。我们证明了这样一个过程的一个定理:随机游动的逃逸率是正的,当且仅当覆盖是不可接受的。我们还更详细地研究了甲板组是Gromov双曲的情况,证明了逃逸率的几乎必然收敛到轨道的边界,以及一个中心极限定理

英文摘要:

In this article we define and study a stochastic process on Galoisian covers of compact manifolds. The successive positions of the process are defined recursively by picking a point uniformly in the Dirichlet domain of the previous one. We prove a theorem à la Kesten for such a process: the escape rate of the random walk is positive if and only if the cover is non amenable. We also investigate more in details the case where the deck group is Gromov hyperbolic, showing the almost sure convergence to the boundary of the trajectory as well as a central limit theorem for the escape rate

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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