title: Noise-induced transition from translational to rotational motion of swarms.
abstract: We consider a model of active Brownian agents interacting via a harmonic attractive potential in a two-dimensional system in the presence of noise. By numerical simulations, we show that this model possesses a noise-induced transition characterized by the breakdown of translational motion and the onset of swarm rotation as the noise intensity is increased. Statistical properties of swarm dynamics in the weak noise limit are further analytically investigated.
authors.affiliation: Institut für Physik, Humboldt-Universität zu Berlin, Newtonstrasse 15, 12489 Berlin, Germany. udo.erdmann@physik.hu-berlin.de
authors.forename: Udo
authors.initials: U
authors.lastname: Erdmann
authors.forename: Werner
authors.initials: W
authors.lastname: Ebeling
authors.forename: Alexander S
authors.initials: AS
authors.lastname: Mikhailov
mesh_terms: D000818:Animals; D001522:Behavior, Animal / Q000502:physiology*; D003198:Computer Simulation; D006801:Humans; D008954:Models, Biological; D015233:Models, Statistical; D009038:Motion; D009068:Movement / Q000502:physiology*; D011157:Population Dynamics; D012399:Rotation; D012919:Social Behavior