Journal
JOURNAL OF CHEMICAL PHYSICS
Volume 148, Issue 15, Pages -Publisher
AMER INST PHYSICS
DOI: 10.1063/1.5023403
Keywords
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Funding
- Office of Science, Office of Basic Energy Sciences, of the U.S. Department of Energy [DE-AC02-05CH11231]
- NSF
- U.S. Army Research Laboratory
- U.S. Army Research Office [W911NF-13-1-0390]
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Off-lattice active Brownian particles form clusters and undergo phase separation even in the absence of attractions or velocity-alignment mechanisms. Arguments that explain this phenomenon appeal only to the ability of particles to move persistently in a direction that fluctuates, but existing lattice models of hard particles that account for this behavior do not exhibit phase separation. Here we present a lattice model of active matter that exhibits motility-induced phase separation in the absence of velocity alignment. Using direct and rare-event sampling of dynamical trajectories, we showthat clustering and phase separation are accompanied by pronounced fluctuations of static and dynamic order parameters. This model provides a complement to off-lattice models for the study of motility-induced phase separation. Published by AIP Publishing.
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