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  • Title: Critical Motility-Induced Phase Separation Belongs to the Ising Universality Class.
    Author: Partridge B, Lee CF.
    Journal: Phys Rev Lett; 2019 Aug 09; 123(6):068002. PubMed ID: 31491158.
    Abstract:
    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.
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