Work

Collective motion of self-propelled particles interacting without cohesion

Year: 2008

Type: article

Abstract: We present a comprehensive study of Vicsek-style self-propelled particle models in two and three space dimensions. The onset of collective motion in such stochastic models with only local alignment interactions is studied in detail and shown to be discontinuous (first-order-like). The properties of the ordered, collectively moving phase are investigated. In a large domain of parameter space including the transition region, well-defined high-density and high-order propagating solitary structures are shown to dominate the dynamics. Far enough from the transition region, on the other hand, these objects are not present. A statistically homogeneous ordered phase is then observed, which is characterized by anomalously strong density fluctuations, superdiffusion, and strong intermittency.

Source: Physical Review E

DOI: 10.1103/physreve.77.046113

Authors: Hugues Chaté, Francesco Ginelli, Guillaume Grégoire, Franck Raynaud

Institutions: Centre National de la Recherche Scientifique, Commissariat à l'Énergie Atomique et aux Énergies Alternatives, CEA Paris-Saclay - Etablissement de Saclay, Service de Physique de l'État Condensé, CEA Paris-Saclay, Laboratoire Matière et Systèmes Complexes, Université Paris Diderot

Language: English

Topic: Micro and Nano Robotics

Subfield: Condensed Matter Physics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: bronze

Funders: European Commission, Agence Nationale de la Recherche

OpenAlex ID: W2018580609

FWCI: 14.2

Cites: 60

Cited by: 696

Related to: 10