Collective motion in repulsive self-propelled particles in confined geometries

We study the collective dynamics of a simple model of repulsive self-propelled particles in three different geometries bounded by reflecting walls. Order-disorder transition is observed in all three cases and the behavior of the phase diagram is similar to that of a system with periodic boundary con...

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Bibliographic Details
Published inJournal of physics. Conference series Vol. 921; no. 1; pp. 12006 - 12010
Main Authors Hiraoka, Takayuki, Shimada, Takashi, Ito, Nobuyasu
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.11.2017
Subjects
Boundary conditions
Order-disorder transformations
Phase diagrams
Physics
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Summary:We study the collective dynamics of a simple model of repulsive self-propelled particles in three different geometries bounded by reflecting walls. Order-disorder transition is observed in all three cases and the behavior of the phase diagram is similar to that of a system with periodic boundary conditions, which supports a view that the coherent motion of particles is induced by a microscopic mechanism. We also find that some interesting quasistable dynamic patterns may appear during the ordering process. The long lifetime of the transient structures indicates that the boundaries hinder the propagation of correlations.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/921/1/012006