Pattern formation in self-propelled particles with density-dependent motility

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 intera...

Full description

Saved in:
Bibliographic Details
Published in:Physical review letters 2012-06, Vol.108 (24), p.248101-248101, Article 248101
Main Authors: Farrell, F D C, Marchetti, M C, Marenduzzo, D, Tailleur, J
Format: Article
Language:English
Subjects:
Biological Physics
Condensed Matter
Physics
Soft Condensed Matter
Statistical Mechanics
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary: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.
ISSN:0031-9007
1079-7114
DOI:10.1103/PhysRevLett.108.248101