%0 Journal Article %1 Gregoire2004 %A Grégoire, Guillaume %A Chaté, Hugues %D 2004 %I American Physical Society %J Phys. Rev. Lett. %K collective-motion phase-transition self-propelled-particles swarms %N 2 %P 025702 %R 10.1103/PhysRevLett.92.025702 %T Onset of Collective and Cohesive Motion %V 92 %X We study the onset of collective motion, with and without cohesion, of groups of noisy self-propelled particles interacting locally. We find that this phase transition, in two space dimensions, is always discontinuous, including for the minimal model of Vicsek et al. Phys. Rev. Lett. 75,1226 (1995) for which a nontrivial critical point was previously advocated. We also show that cohesion is always lost near onset, as a result of the interplay of density, velocity, and shape fluctuations.

@article{Gregoire2004, abstract = {We study the onset of collective motion, with and without cohesion, of groups of noisy self-propelled particles interacting locally. We find that this phase transition, in two space dimensions, is always discontinuous, including for the minimal model of Vicsek et al. [Phys. Rev. Lett. 75,1226 (1995)] for which a nontrivial critical point was previously advocated. We also show that cohesion is always lost near onset, as a result of the interplay of density, velocity, and shape fluctuations.}, added-at = {2011-04-14T16:04:31.000+0200}, author = {Grégoire, Guillaume and Chaté, Hugues}, biburl = {https://www.bibsonomy.org/bibtex/2eeb2ebd4f2ace067e36bf928742ab5e9/rincedd}, doi = {10.1103/PhysRevLett.92.025702}, file = {Gregoire2004 - Onset of Collective and Cohesive Motion.pdf:Swarms/Gregoire2004 - Onset of Collective and Cohesive Motion.pdf:PDF}, groups = {public}, interhash = {3ae27f35e911966e46999586d0ca8264}, intrahash = {61b1482c93c7bdf961ada876342470be}, journal = {Phys. Rev. Lett.}, keywords = {collective-motion phase-transition self-propelled-particles swarms}, number = 2, pages = 025702, publisher = {American Physical Society}, timestamp = {2011-04-15T14:55:18.000+0200}, title = {Onset of Collective and Cohesive Motion}, username = {rincedd}, volume = 92, year = 2004 }