AI Article Synopsis
- The study investigates a model of self-propelled particles that interact via elastic repulsion, demonstrating active phase separation in a two-dimensional space without attractive interactions or orientation symmetry.
- A phase diagram is developed based on activity and packing density, revealing three distinct states: a uniform liquid with unusual clustering, a phase-separated state at both high and low densities, and a frozen phase.
- The authors offer interpretations of these regimes and introduce scaling arguments to delineate the boundaries between them.
Article Abstract
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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| http://dx.doi.org/10.1039/c3sm52469h | DOI Listing |
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