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A kinetic-Monte Carlo perspective on active matter.

08:00 EDT 14th April 2019 | BioPortfolio

Summary of "A kinetic-Monte Carlo perspective on active matter."

We study non-equilibrium phases for interacting two-dimensional self-propelled particles with isotropic pair-wise interactions using a persistent kinetic Monte Carlo approach. We establish the quantitative phase diagram, including the motility-induced phase separation (MIPS) that is a commonly observed collective phenomenon in active matter. In addition, we demonstrate for several different potential forms the presence of two-step melting, with an intermediate hexatic phase, in regions far from equilibrium. Increased activity can melt a two-dimensional solid and the melting lines remain disjoint from MIPS. We establish this phase diagram for a range of the inter-particle potential stiffnesses and identify the MIPS phase even in the hard-disk limit. We establish that the full description of the phase behavior requires three independent control parameters.

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This article was published in the following journal.

Name: The Journal of chemical physics
ISSN: 1089-7690
Pages: 144113

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