Journal
SOFT MATTER
Volume 10, Issue 13, Pages 2132-2140Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c3sm52469h
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Funding
- National Science Foundation [DMR-1004789, DGE-1068780]
- Direct For Mathematical & Physical Scien
- Division Of Materials Research [1305184] Funding Source: National Science Foundation
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We study numerically a model of soft polydisperse and non-aligning self-propelled particles interacting through elastic repulsion, which was recently shown to exhibit active phase separation in two dimensions in the absence of any attractive interaction or breaking of the orientational symmetry. We construct a phase diagram in terms of activity and packing fraction and identify three distinct regimes: a homogeneous liquid with anomalous cluster size distribution, a phase-separated state both at high and at low density, and a frozen phase. We provide a physical interpretation of the various regimes and develop scaling arguments for the boundaries separating them.
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