A kinetic-Monte Carlo perspective on active matter

Klamser JU, Kapfer S, Krauth W (2019)


Publication Type: Journal article

Publication year: 2019

Journal

Book Volume: 150

Journal Issue: 14

DOI: 10.1063/1.5085828

Abstract

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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APA:

Klamser, J.U., Kapfer, S., & Krauth, W. (2019). A kinetic-Monte Carlo perspective on active matter. Journal of Chemical Physics, 150(14). https://dx.doi.org/10.1063/1.5085828

MLA:

Klamser, Juliane U., Sebastian Kapfer, and Werner Krauth. "A kinetic-Monte Carlo perspective on active matter." Journal of Chemical Physics 150.14 (2019).

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