title: Large-scale collective properties of self-propelled rods.
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.
authors.affiliation: Service de Physique de l'Etat Condensé, CEA-Saclay, 91191 Gif-sur-Yvette, France.
authors.forename: Francesco
authors.initials: F
authors.lastname: Ginelli
authors.forename: Fernando
authors.initials: F
authors.lastname: Peruani
authors.forename: Markus
authors.initials: M
authors.lastname: Bär
authors.forename: Hugues
authors.initials: H
authors.lastname: Chaté