Brownian walkers within subdiffusing territorial boundaries

L Giuggioli, JR Potts, S Harris

Research output: Contribution to journalArticle (Academic Journal)peer-review

9 Citations (Scopus)

Abstract

Inspired by the collective phenomenon of territorial emergence, whereby animals move and interact through the scent marks they deposit, we study the dynamics of a 1D Brownian walker in a random environment consisting of confining boundaries that are themselves diffusing anomalously. We show how to reduce, in certain parameter regimes, the non-Markovian, many-body problem of territoriality to the analytically tractable one-body problem studied here. The mean square displacement (MSD) of the 1D Brownian walker within subdiffusing boundaries is calculated exactly and generalizes well known results when the boundaries are immobile. Furthermore, under certain conditions, if the boundary dynamics are strongly subdiffusive, we show the appearance of an interesting nonmonotonicity in the time dependence of the MSD, giving rise to transient negative diffusion.
Translated title of the contributionBrownian walkers within subdiffusing territorial boundaries
Original languageEnglish
Pages (from-to)1 - 11
Number of pages11
JournalPhysical Review E: Statistical, Nonlinear, and Soft Matter Physics
Volume83, 061138
DOIs
Publication statusPublished - Jun 2011

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