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Open AccessJournal ArticleDOI

Law of Large Numbers for a Class of Random Walks in Dynamic Random Environments

TLDR
In this article, a class of one-dimensional interacting particle systems in equilibrium, constituting a dynamic random environment, together with a nearest-neighbor random walk that on occupied/vacant sites has a local drift to the right/left.
Abstract
In this paper we consider a class of one-dimensional interacting particle systems in equilibrium, constituting a dynamic random environment, together with a nearest-neighbor random walk that on occupied/vacant sites has a local drift to the right/left. We adapt a regeneration-time argument originally developed by Comets and Zeitouni for static random environments to prove that, under a space-time mixing property for the dynamic random environment called cone-mixing, the random walk has an a.s. constant global speed. In addition, we show that if the dynamic random environment is exponentially mixing in space-time and the local drifts are small, then the global speed can be written as a power series in the size of the local drifts. From the first term in this series the sign of the global speed can be read off. The results can be easily extended to higher dimensions.

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Journal ArticleDOI

Random walk on random walks

TL;DR: In this article, the authors studied a random walk in a one-dimensional dynamic random environment and showed that the position of the random walk satisfies a strong law of large numbers, a functional central limit theorem and a large deviation bound, provided the deviation bound is large enough.
Journal ArticleDOI

Random walk driven by simple exclusion process

TL;DR: In this article, a strong law of large numbers and an annealed invariance principle for a random walk in a one-dimensional dynamic random environment evolving as the simple exclusion process with jump parameter γ was proved.
Journal ArticleDOI

Random walks in dynamic random environments: A transference principle

TL;DR: In this article, a general class of random walks driven by a uniquely ergodic Markovian environment is studied and the authors obtain strong ergodicity properties for the environment as seen from the position of the walker, that is, the environment process.
Journal ArticleDOI

Random walks in dynamic random environments: A transference principle

TL;DR: In this paper, a general class of random walks driven by a uniquely ergodic Markovian environment is studied and the authors obtain strong ergodicity properties for the environment as seen from the position of the walker, that is, the environment process.
Journal ArticleDOI

Scaling of a random walk on a supercritical contact process

TL;DR: In this article, a strong law of large numbers for a one-dimensional random walk in a dynamic random environment given by a supercritical contact process in equilibrium is provided, based on a coupling argument that traces the space-time cones containing the infection clusters generated by single infections.
References
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Book

Interacting Particle Systems

TL;DR: The construction, and other general results are given in this paper, with values in [0, ] s. The voter model, the contact process, the nearest-particle system, and the exclusion process.
Book

Probability with martingales

TL;DR: A branching-process example and an easy strong law: product measure using martingale theory and the central limit theorem are presented.
Book

Gibbs Measures and Phase Transitions

TL;DR: This comprehensive monograph covers in depth a broad range of topics in the mathematical theory of phase transition in statistical mechanics and serves both as an introductory text and as a reference for the expert.

Random Walks in Random Environment.

Ofer Zeitouni
TL;DR: You have obtained prior permission, you may not download an entire issue of a journal or multiple copies of articles, and you may use content in the JSTOR archive only for your personal, non-commercial use.
Journal ArticleDOI

A law of large numbers for random walks in random environment

TL;DR: In this article, the authors derived a law of large numbers for a class of multidimensional random walks in random environment satisfying a condition which first appeared in the work of Kalikow.