Intersection exponents for biased random walks on discrete cylinders

Brigitta Vermesi

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arXiv · 0810.0572

Intersection exponents for biased random walks on discrete cylinders

Brigitta Vermesi

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Abstract

We prove existence of intersection exponents xi(k,lambda) for biased random walks on d-dimensional half-infinite discrete cylinders, and show that, as functions of lambda, these exponents are real analytic. As part of the argument, we prove convergence to stationarity of a time-inhomogeneous Markov chain on half-infinite random paths. Furthermore, we show this convergence takes place at exponential rate, an estimate obtained via a coupling of weighted half-infinite paths.

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Brigitta Vermesi. 2008-10-03. Intersection exponents for biased random walks on discrete cylinders. https://arxiv.org/abs/0810.0572

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