Comment on ``Phase Transitions in Systems of Self-Propelled Agents and Related Network Models''
Statistical Mechanics
2009-11-13 v1
Abstract
In this comment we show that the transition to collective motion in Vicsek-like systems with angular noise remain discontinuous for large velocity values. Thus, the networks studied by Aldana {\et al.} [Phys. Rev. Lett. {\bf 98}, 095702 (2007)] at best constitute a singular, large velocity limit of these systems.
Cite
@article{arxiv.0711.1225,
title = {Comment on ``Phase Transitions in Systems of Self-Propelled Agents and Related Network Models''},
author = {Hugues Chaté and Francesco Ginelli and Guillaume Grégoire},
journal= {arXiv preprint arXiv:0711.1225},
year = {2009}
}
Comments
To appear on Physical Review Letters