Activity controls fragility: A Random First Order Transition Theory for an active glass

Abstract

How does nonequilibrium activity modify the approach to a glass? This is an important question, since many experiments reveal the near-glassy nature of the cell interior, remodelled by activity. However, different simulations of dense assemblies of active particles, parametrised by a self-propulsion force, $f_0$, and persistence time, ${\tau }_p$, appear to make contradictory predictions about the influence of activity on characteristic features of glass, such as fragility. This calls for a broad conceptual framework to understand active glasses; here we extend the Random First-Order Transition (RFOT) theory to a dense assembly of self-propelled particles. We compute the active contribution to the configurational entropy using an effective medium approach - that of a single particle in a caging-potential. This simple active extension of RFOT provides excellent quantitative fits to existing simulation results. We find that whereas $f_0$ always inhibits glassiness, the effect of ${\tau }_p$ is more subtle and depends on the microscopic details of activity. In doing so, the theory automatically resolves the apparent contradiction between the simulation models. The theory also makes several testable predictions, which we verify by both existing and new simulation data, and should be viewed as a step towards a more rigorous analytical treatment of active glass.

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Cited by in corpus (52)

• Dense active matter model of motion patterns in confluent cell monolayers
• Perspective: Nonequilibrium glassy dynamics in dense systems of active particles
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• Phase Diagram of Active Brownian Spheres: Crystallization and the Metastability of Motility-Induced Phase Separation
• Extreme active matter at high densities
• Active glasses
• Active glass: ergodicity breaking dramatically affects response to self-propulsion
• Stationary superstatistics distributions of trapped run-and-tumble particles
• Enhanced diffusion, swelling and slow reconfiguration of a single chain in non-Gaussian active bath
• Disordered collective motion in dense assemblies of persistent particles
• Effects of active fluctuations on energetics of a colloidal particle: superdiffusion, dissipation and entropy production
• Multiple Types of Aging in Active Glass
• Dynamics and escape of active particles in a harmonic trap
• Active dumbbells: dynamics and morphology in the coexisting region
• Nonmonotonic behavior in the dense assemblies of active colloids
• Escape of a passive particle from activity-induced energy landscape: Emergence of slow and fast effective diffusion
• Entropons as collective excitations in active solids
• Translational and rotational dynamics of a self-propelled Janus probe in crowded environments
• Glassy Dynamics in Chiral Fluids
• Theory and simulation for equilibrium glassy dynamics in cellular Potts model of confluent biological tissue
• Glassy dynamics of a model of bacterial cytoplasm with metabolic activities
• Cage Length Controls the Non-Monotonic Dynamics of Active Glassy Matter
• Arrested States in Persistent Active Matter: Gelation without Attraction
• Yielding and plasticity in amorphous solids
• Active Glassy Dynamics is Unaffected by the Microscopic Details of Self-Propulsion
• Motile topological defects hinder dynamical arrest in dense liquids of active ellipsoids
• Autonomously Probing Viscoelasticity in Disordered Suspensions
• How to Study a Persistent Active Glassy System?
• Alignment interactions drive structural transitions in biological tissues
• Orbital Magnetism of Active Viscoelastic Suspension
• Mode-coupling theory for mixtures of athermal self-propelled particles
• Emergent Mesoscale Correlations in Active Solids with Noisy Chiral Dynamics
• Dynamical anomalies and structural features of Active Brownian Particles characterised by two repulsive length scales
• Aging or DEAD: origin of the non-monotonic response to weak self-propulsion in active glasses
• The Influence of Particle Softness on Active Glassy Dynamics
• Motility driven glassy dynamics in confluent epithelial monolayers
• Connecting Relaxation Time to a Dynamical Length Scale in Athermal Active Glass Formers
• Enhanced Long Wavelength Mermin-Wagner Fluctuations in Active Crystals and Glasses
• Active Jamming at Criticality
• Single active particle in a harmonic potential: non-existence of the Jarzynski relation
• A Novel Method to Probe the Pronounced Growth of Correlation Lengths in an Active Glass-forming Liquids using Elongated Probe
• Not-so-glass-like Caging and Fluctuations of an Active Matter Model
• Tuning Steady Shear Rheology through Active Dopants
• Scaling the glassy dynamics of active particles: Tunable fragility and reentrance
• Far-from-equilibrium complex landscapes
• Controlling the Glass Transition through Active Fluctuating Interactions
• Structural fluctuations in active glasses
• Correlated escape of active particles across a potential barrier
• How non-equilibrium correlations in active matter reveal the topological crossover in glasses
• Yielding in dense active matter
• Configurational Entropy of Self Propelled Glass Formers
• Optimizing Energetic cost of Uncertainty in a Driven System With and Without Feedback