Critical Motility-Induced Phase Separation Belongs to the Ising Universality Class

A collection of self-propelled particles with volume exclusion interactions can exhibit the phenomenology of a gas-liquid phase separation, known as motility-induced phase separation (MIPS). The nonequilibrium nature of the system is fundamental to the phase transition; however, it is unclear whethe...

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Bibliographic Details
Published inPhysical review letters Vol. 123; no. 6; p. 068002
Main Authors Partridge, Benjamin, Lee, Chiu Fan
Format Journal Article
LanguageEnglish
Published United States 09.08.2019
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Summary:A collection of self-propelled particles with volume exclusion interactions can exhibit the phenomenology of a gas-liquid phase separation, known as motility-induced phase separation (MIPS). The nonequilibrium nature of the system is fundamental to the phase transition; however, it is unclear whether MIPS at criticality contributes a novel universality class to nonequilibrium physics. We demonstrate here that this is not the case by showing that a generic critical MIPS belongs to the Ising universality class with conservative dynamics.
ISSN:1079-7114
DOI:10.1103/PhysRevLett.123.068002