How active forces influence nonequilibrium glass transitions Auteur(s): Berthier L., Flenner Elijah, Szamel G. (Article) Publié: New Journal Of Physics, vol. 19 p.125006 (2017) Texte intégral en Openaccess : Ref HAL: hal-01667079_v1 Ref Arxiv: 1708.04259 DOI: 10.1088/1367-2630/aa914e WoS: 000424893800001 Ref. & Cit.: NASA ADS Exporter : BibTex | endNote 14 Citations Résumé: Dense assemblies of self-propelled particles undergo a nonequilibrium form of glassy dynamics. Physical intuition suggests that increasing departure from equilibrium due to active forces fluidifies a glassy system. We falsify this belief by devising a model of self-propelled particles where increasing departure from equilibrium can both enhance or depress glassy dynamics, depending on the chosen state point. We analyze a number of static and dynamic observables and suggest that the location of the nonequilibrium glass transition is primarily controlled by the evolution of two-point static density correlations due to active forces. The dependence of the density correlations on the active forces varies non-trivially with the details of the system, and is difficult to predict theoretically. Our results emphasize the need to develop an accurate liquid state theory for nonequilibrium systems. Commentaires: . Réf Journal: New J. Phys. 19, 125006 (2017) |