Athermal Phase Separation of Self-Propelled Particles with no Alignment

Autor:	Fily, Yaouen, Marchetti, M. Cristina
Rok vydání:	2012
Předmět:	Condensed Matter - Soft Condensed Matter Quantitative Biology - Cell Behavior
Zdroj:	Phys. Rev. Lett. 108, 235702 (2012)
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevLett.108.235702
Popis:	We study numerically and analytically a model of self-propelled polar disks on a substrate in two dimensions. The particles interact via isotropic repulsive forces and are subject to rotational noise, but there is no aligning interaction. As a result, the system does not exhibit an ordered state. The isotropic fluid phase separates well below close packing and exhibits the large number fluctuations and clustering found ubiquitously in active systems. Our work shows that this behavior is a generic property of systems that are driven out of equilibrium locally, as for instance by self propulsion. Comment: 5 pages, 4 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1201.4847 Zobrazit plný text záznamu View this record from Arxiv