How active forces influence nonequilibrium glass transitions

Abstract

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.

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Cited by in corpus (43)

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• Glassy Dynamics in Chiral Fluids
• Mode-coupling theory for the steady-state dynamics of active Brownian particles
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• Cage Length Controls the Non-Monotonic Dynamics of Active Glassy Matter
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• Aging in thermal active glasses
• Mode-Coupling Theory for Tagged-Particle Motion of Active Brownian Particles
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• Intermittent relaxation and avalanches in extremely persistent active matter
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• Fluid-Glass-Jamming Rheology of Soft Active Brownian Particles
• Mode-coupling theory for mixtures of athermal self-propelled particles
• Instantaneous Normal Modes Reveal Structural Signatures for the Herschel-Bulkley Rheology in Sheared Glasses
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• The "isothermal" compressibility of active matter
• The Influence of Particle Softness on Active Glassy Dynamics
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• Active Jamming at Criticality
• Transmission of mobility via cooperative mechanisms in soft active matter
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• Random traction yielding transition in epithelial tissues
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