Ref HAL: hal-01667079_v1
Ref Arxiv: 1708.04259
DOI: 10.1088/1367-2630/aa914e
WoS: 000424893800001
Ref. & Cit.: NASA ADS
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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)