title: Long-range ordering of vibrated polar disks.
abstract: Vibrated polar disks have been used experimentally to investigate collective motion of driven particles, where fully ordered asymptotic regimes could not be reached. Here we present a model reproducing quantitatively the single, binary, and collective properties of this granular system. Using system sizes not accessible in the laboratory, we show in silico that true long-range order is possible in the experimental system. Exploring the model's parameter space, we find a phase diagram qualitatively different from that of dilute or pointlike particle systems.
authors.affiliation: Arnold Sommerfeld Center for Theoretical Physics and Center for NanoScience, Department of Physics, Ludwig-Maximilians-Universität München, 80333 Munich, Germany.
authors.forename: C A
authors.initials: CA
authors.lastname: Weber
authors.affiliation: Arnold Sommerfeld Center for Theoretical Physics and Center for NanoScience, Department of Physics, Ludwig-Maximilians-Universität München, 80333 Munich, Germany.
authors.forename: T
authors.initials: T
authors.lastname: Hanke
authors.affiliation: Laboratoire de Physique, ENS de Lyon and CNRS UMR 5672, 69007 Lyon, France.
authors.forename: J
authors.initials: J
authors.lastname: Deseigne
authors.affiliation: Service de Physique de l'Etat Condensé, CEA-Saclay and CNRS URA 2464, 91191 Gif-sur-Yvette, France.
authors.forename: S
authors.initials: S
authors.lastname: Léonard
authors.affiliation: Service de Physique de l'Etat Condensé, CEA-Saclay and CNRS URA 2464, 91191 Gif-sur-Yvette, France and EC2M-Gulliver, ESPCI-ParisTech and CNRS UMR 7083, 75005 Paris, France.
authors.forename: O
authors.initials: O
authors.lastname: Dauchot
authors.affiliation: Arnold Sommerfeld Center for Theoretical Physics and Center for NanoScience, Department of Physics, Ludwig-Maximilians-Universität München, 80333 Munich, Germany.
authors.forename: E
authors.initials: E
authors.lastname: Frey
authors.affiliation: Service de Physique de l'Etat Condensé, CEA-Saclay and CNRS URA 2464, 91191 Gif-sur-Yvette, France and Max Planck Institute for the Physics of Complex Systems, Nöthnitzer Straße 38, 01187 Dresden, Germany.
authors.forename: H
authors.initials: H
authors.lastname: Chaté
mesh_terms: D003198:Computer Simulation; D008962:Models, Theoretical; D009038:Motion; D010316:Particle Size; D014732:Vibration