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Universal Exploration Dynamics of Random Walks by Léo Régnier; Maxim Dolgushev; S. Redner; Olivier Bénichou is a Biochemistry, Genetics and Molecular Biology article available to read on EtoBox.

What is Universal Exploration Dynamics of Random Walks about?

## Abstract The territory explored by a random walk is a key property that may be quantified by the number of distinct sites that the random walk visits up to a given time. We introduce a more fundamental quantity, the time τ~n~ required by a random walk to find a site that it never visited previously when the walk has already visited n distinct sites, which encompasses the full dynamics about the visitation statistics. To study it, we develop a theoretical approach that relies on a mapping with a trapping problem, in which the spatial distribution of traps is continuously updated by the random walk itself. Despite the geometrical complexity of the territory explored by a random walk, the distribution of the τ~n~ can be accounted for by simple analytical expressions. Processes as varied as regular diffusion, anomalous diffusion, and diffusion in disordered media and fractals, fall into the same universality classes.

Who reads Universal Exploration Dynamics of Random Walks?

Author

Léo Régnier; Maxim Dolgushev; S. Redner; Olivier Bénichou

Publisher

Springer Science and Business Media LLC

Published

2023

Language

EN

Field

Biochemistry, Genetics and Molecular Biology (Life Sciences)