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arXiv 2004.14315math.PRmath.GRmath.GT
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双曲空间上非初等随机游动的大偏差原理

Large deviation principles for non-elementary random walks on hyperbolic spaces

Cagri Sert, Alessandro Sisto

摘要:

证明了双曲空间等距群上非初等随机游动的位移和平移距离满足大偏差原理,且速率函数$I$相同.粗略地说,这意味着存在函数$I(t)$,该函数精确地预测长度$n$的随机乘积的平移距离是$tn$的概率的指数衰减率,并且对于位移也是类似的。这解决了关于随机矩阵乘积的谱半径的大偏差原理的猜想的一个特例。在第二部分中,我们给出了一个表征的有效支持率函数的联合稳定长度的确定性概念。最后,作为我们的技术的副产品,我们推导出一些进一步的确定性结果的渐近的有界集的等距。本文中的一些结果是由Boulanger-Mathieu同时独立地得到的,正如我们在引言中所讨论的那样。

英文摘要:

We show that the displacement and translation distance of non-elementary random walks on isometry groups of hyperbolic spaces satisfy large deviation principles with the same rate function $I$. Roughly, this means that there exists function $I(t)$ which accurately predicts the exponential decay rate of the probability that the translation distance of a random product of length $n$ is $tn$, and similarly for the displacement. This settles a special case of a conjecture concerning the large deviation principle for the spectral radius of random matrix products. In a second part, we give a characterization of the effective support of the rate function only in terms of the deterministic notion of joint stable length. Finally, as a by-product of our techniques, we deduce some further deterministic results on the asymptotics of a bounded set of isometries. Some of the results in this paper were obtained simultaneously and independently by Boulanger--Mathieu as we discuss in the introduction.

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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