A local limit theorem for a transient chaotic walk in a frozen environment

Lasse Leskelä and Mikko Stenlund

Stochastic Processes and their Applications, 2011, vol. 121, issue 12, 2818-2838

Abstract: This paper studies particle propagation in a one-dimensional inhomogeneous medium where the laws of motion are generated by chaotic and deterministic local maps. Assuming that the particle’s initial location is random and uniformly distributed, this dynamical system can be reduced to a random walk in a one-dimensional inhomogeneous environment with a forbidden direction. Our main result is a local limit theorem which explains in detail why, in the long run, the random walk’s probability mass function does not converge to a Gaussian density, although the corresponding limiting distribution over a coarser diffusive space scale is Gaussian.

Keywords: Random walk in random environment; Quenched random walk; Random media; Local limit theorem; Extended dynamical system (search for similar items in EconPapers)
Date: 2011
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Persistent link: https://EconPapers.repec.org/RePEc:eee:spapps:v:121:y:2011:i:12:p:2818-2838

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DOI: 10.1016/j.spa.2011.07.010

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