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Pattern Formation in Self-Propelled Particles with Density-Dependent Motility

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Original languageEnglish
Article number248101
Pages (from-to)-
Number of pages5
JournalPhysical Review Letters
Volume108
Issue number24
DOIs
StatePublished - 15 Jun 2012

Abstract

We study the behavior of interacting self-propelled particles, whose self-propulsion speed decreases with their local density. By combining direct simulations of the microscopic model with an analysis of the hydrodynamic equations obtained by explicitly coarse graining the model, we show that interactions lead generically to the formation of a host of patterns, including moving clumps, active lanes, and asters. This general mechanism could explain many of the patterns seen in recent experiments and simulations.

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