Large-Scale Collective Properties of Self-Propelled Rods

Francesco Ginelli, Fernando Peruani, Markus Bär, and Hugues Chaté
Phys. Rev. Lett. 104, 184502 – Published 4 May 2010
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Abstract

We study, in two space dimensions, the collective properties of constant-speed polar point particles interacting locally by nematic alignment in the presence of noise. This minimal approach to self-propelled rods allows one to deal with large numbers of particles, which exhibit a rich phenomenology distinctively different from all other known models for self-propelled particles. Extensive simulations reveal long-range nematic order, phase separation, and space-time chaos mediated by large-scale segregated structures.

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  • Received 6 November 2009

DOI:https://doi.org/10.1103/PhysRevLett.104.184502

©2010 American Physical Society

Authors & Affiliations

Francesco Ginelli1,2, Fernando Peruani1, Markus Bär3, and Hugues Chaté1

  • 1Service de Physique de l’État Condensé, CEA-Saclay, 91191 Gif-sur-Yvette, France
  • 2Institut des Systèmes Complexes de Paris Île-de-France, 57-59 rue Lhomond, 75005 Paris, France
  • 3Physikalisch-Technische Bundesanstalt, Abbestrasse 2-12, 10587 Berlin, Germany

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Issue

Vol. 104, Iss. 18 — 7 May 2010

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