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Article Dans Une Revue Electronic Communications in Probability Année : 2023

A note on the antisymmetry in the speed of a random walk in reversible dynamic random environment

Résumé

In this short note, we prove that $v(-\epsilon)=-v(\epsilon)$. Here, $v(\epsilon)$ is the speed of a one-dimensional random walk in a dynamic \emph{reversible} random environment, that jumps to the right (resp. to the left) with probability $1/2+\epsilon$ (resp. $1/2-\epsilon$) if it stands on an occupied site, and vice-versa on an empty site. We work in any setting where $v(\epsilon), v(-\epsilon)$ are well-defined, i.e. a weak LLN holds. The proof relies on a simple coupling argument that holds only in the discrete setting.
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Dates et versions

hal-03828998 , version 1 (25-10-2022)
hal-03828998 , version 2 (09-01-2023)

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Oriane Blondel. A note on the antisymmetry in the speed of a random walk in reversible dynamic random environment. Electronic Communications in Probability, 2023, 28 (none), ⟨10.1214/23-ECP514⟩. ⟨hal-03828998v2⟩
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