期刊
PHYSICAL REVIEW E
卷 101, 期 2, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevE.101.022602
关键词
-
资金
- Deutsche Forschungsgemeinschaft (DFG) within collaborative research center [TRR 146, 404840447]
- Deutsche Forschungsgemeinschaft (DFG) [SPP 1726, 254473714]
We study numerically the phase behavior of self-propelled elliptical particles interacting through the hard repulsive Gay-Berne potential at infinite Peclet number. Changing a single parameter, the aspect ratio, allows us to continuously go from discoid active Brownian particles to elongated polar rods. Discoids show phase separation, which changes to a cluster state of polar domains, which then form polar bands as the aspect ratio is increased. From the simulations, we identify and extract the two effective parameters entering the mean-field description: the force imbalance coefficient and the effective coupling to the local polarization. These two coefficients are sufficient to obtain a complete and consistent picture, unifying the paradigms of scalar and polar active matter.
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