Journal
NEW JOURNAL OF PHYSICS
Volume 19, Issue -, Pages -Publisher
IOP PUBLISHING LTD
DOI: 10.1088/1367-2630/aa914e
Keywords
active matter; glass transition; theory
Categories
Funding
- European Research Council under the European Union's Seventh Framework Programme (FP7)/ERC Grant [306845]
- Simons Foundation [454933]
- NSF [CHE1213401]
- Division Of Chemistry
- Direct For Mathematical & Physical Scien [1213401] Funding Source: National Science Foundation
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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. Wefalsify 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. Weanalyze 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.
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