Freezing and phase separation of self-propelled disks.

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.

• Publication year

  2013

• Venue

  Soft Matter

• Publication date

  2013-09-15

• Fields of study

  Medicine, Physics, Chemistry

• Identifiers
  DOI 10.1039/C3SM52469HarXiv 1309.3714PMID 24652167
• External record

  Open on Semantic Scholar

• Source metadata

  Semantic Scholar, PubMed

• No claims are published for this paper.

• No concepts are published for this paper.

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