Glassy dynamics of athermal self-propelled particles: Computer simulations and a nonequilibrium microscopic theory

Abstract

We combine computer simulations and analytical theory to investigate the glassy dynamics in dense assemblies of athermal particles evolving under the sole influence of self-propulsion. The simulations reveal that when the persistence time of the self-propelled particles is increased, the local structure becomes more pronounced whereas the long-time dynamics first accelerates and then slows down. These seemingly contradictory evolutions are explained by constructing a nonequilibrium mode-coupling-like theory for interacting self-propelled particles. To predict the collective dynamics the theory needs the steady state structure factor and the steady state correlations of the local velocities. It yields nontrivial predictions for the glassy dynamics of self-propelled particles in qualitative agreement with the simulations.

9 pages; accepted for publication in Physical Review E

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• The Parental Active Model: a unifying stochastic description of self-propulsion
• Active matter: quantifying the departure from equilibrium
• How irreversible are steady-state trajectories of a trapped active particle?
• Escape of a passive particle from activity-induced energy landscape: Emergence of slow and fast effective diffusion
• Translational and rotational dynamics of a self-propelled Janus probe in crowded environments
• Effective equilibrium states in mixtures of active particles driven by colored noise
• Irreversibility in active matter: General framework for active Ornstein-Uhlenbeck particles
• Mode-coupling theory for the steady-state dynamics of active Brownian particles
• Static Structure of Active Brownian Hard Disks
• Motile topological defects hinder dynamical arrest in dense liquids of active ellipsoids
• Theoretical approaches to the steady-state statistical physics of interacting dissipative units
• Dressed Active Particles in Spherical Crystals
• Alignment interactions drive structural transitions in biological tissues
• The Influence of Particle Softness on Active Glassy Dynamics
• Glassy Dynamics of Brownian Particles with Velocity-Dependent Friction
• Mean-field theory for the structure of strongly interacting active liquids