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arXiv · 1810.06112

Critical motility-induced phase separation belongs to the Ising universality class

Benjamin Partridge·Chiu Fan Lee
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Abstract

A collection of self-propelled particles with volume exclusion interactions can exhibit the phenomenology of gas-liquid phase separation, known as motility-induced phase separation (MIPS). The non-equilibrium nature of the system is fundamental to the phase transition, however, it is unclear whether MIPS at criticality contributes a novel universality class to non-equilibrium 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.

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Benjamin Partridge, Chiu Fan Lee. 2018-10-14. Critical motility-induced phase separation belongs to the Ising universality class. https://doi.org/10.1103/physrevlett.123.068002

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