Discrete- and continuous-time random walks in 1D L\'evy random medium
Abstract
A L\'evy random medium, in a given space, is a random point process where the distances between points, a.k.a. targets, are long-tailed. Random walks visiting the targets of a L\'evy random medium have been used to model many (physical, ecological, social) phenomena that exhibit superdiffusion as the result of interactions between an agent and a sparse, complex environment. In this note we consider the simplest non-trivial L\'evy random medium, a sequence of points in the real line with i.i.d. long-tailed distances between consecutive targets. A popular example of a continuous-time random walk in this medium is the so-called L\'evy-Lorentz gas. We give an account of a number of recent theorems on generalizations and variations of such model, in discrete and continuous time.
Cite
@article{arxiv.2112.08822,
title = {Discrete- and continuous-time random walks in 1D L\'evy random medium},
author = {Marco Lenci},
journal= {arXiv preprint arXiv:2112.08822},
year = {2022}
}
Comments
15 pages, final version to be published in the proceedings of the conference "The Legacy of Carlo Cercignani: from Kinetic Theory to Turbulence Modeling"