Correlated escape of active particles across a potential barrier
arXiv:2110.03042 · doi:10.1063/5.0074072
Abstract
We study the dynamics of one-dimensional active particles confined in a double-well potential, focusing on the escape properties of the system, such as the mean escape time from a well. We first consider a single-particle both in near and far-from-equilibrium regimes by varying the persistence time of the active force and the swim velocity. A non-monotonic behavior of the mean escape time is observed with the persistence time of the activity, revealing the existence of an optimal choice of the parameters favoring the escape process. For small persistence times, a Kramers-like formula with an effective potential obtained within the Unified Colored Noise Approximation is shown to hold. Instead, for large persistence times, we developed a simple theoretical argument based on the first passage theory which explains the linear dependence on the escape time with the persistence of the active force. In the second part of the work, we consider the escape of two active particles mutually repelling. Interestingly, the subtle interplay of active and repulsive forces may lead to a correlation between particles favoring the simultaneous jump across the barrier. This mechanism cannot be observed in the escape process of two passive particles. Finally, we find that, in the small-persistence regime, the repulsion favors the escape, like in passive systems, in agreement with our theoretical predictions, while for large persistence times, the repulsive and active forces produce an effective attraction which hinders the barrier crossing.
References in corpus (70)
- Active Particles in Complex and Crowded Environments
- Physics of Microswimmers - Single Particle Motion and Collective Behavior
- Dynamical clustering and phase separation in suspensions of self-propelled colloidal particles
- Athermal Phase Separation of Self-Propelled Particles with no Alignment
- How far from equilibrium is active matter?
- The 2019 Motile Active Matter Roadmap
- Computational models for active matter
- Pressure and Phase Equilibria in Interacting Active Brownian Spheres
- Collective motion and nonequilibrium cluster formation in colonies of gliding bacteria
- A self-propelled particle in an external potential: is there an effective temperature?
- Effective Interactions in Active Brownian Suspensions
- Statistical Mechanics of Active Ornstein Uhlenbeck Particles
- Self-Starting Micromotors in a Bacterial Bath
- The statistical physics of active matter: from self-catalytic colloids to living cells
- Multidimensional Stationary Probability Distribution for Interacting Active Particles
- Irreversibility in active matter systems: Fluctuation theorem and mutual information
- Dynamics of a self-propelled particle in a harmonic trap
- Generalized energy equipartition in harmonic oscillators driven by active baths
- Run-and-tumble particle in one-dimensional confining potential: Steady state, relaxation and first passage properties
- Dense active matter model of motion patterns in confluent cell monolayers
- Active colloidal suspensions: Clustering and phase behavior
- Entropy production and fluctuation theorems for active matter
- Living clusters and crystals from low density suspensions of active colloids
- Interrupted Motility Induced Phase Separation in Aligning Active Colloids
- Motility-Induced Microphase and Macrophase Separation in a Two-Dimensional Active Brownian Particle System
- Inertial self-propelled particles
- Activated escape of a self-propelled particle from a metastable state
- Steady State of an Active Brownian Particle in Two-Dimensional Harmonic Trap
- Activity controls fragility: A Random First Order Transition Theory for an active glass
- How active forces influence nonequilibrium glass transitions
- Active escape dynamics: the effect of persistence on barrier crossing
- Heat, temperature and Clausius inequality in a model for active brownian particles
- Active Brownian Heat Engines
- Escape rate of active particles in the effective equilibrium approach
- Filling an emulsion drop with motile bacteria
- Self-induced polar order of active Brownian particles in a harmonic trap
- Escape dynamics of active particles in multistable potentials
- Nonequilibrium mode-coupling theory for dense active systems of self-propelled particles
- Active Ornstein-Uhlenbeck model for self-propelled particles with inertia
- Effects of active fluctuations on energetics of a colloidal particle: superdiffusion, dissipation and entropy production
- Applicability of Effective Pair Potentials for Active Brownian Particles
- Universality class of the motility-induced critical point in large scale off-lattice simulations of active particles
- Mean first passage time of active Brownian particle in one dimension
- The active trap model
- Effective equilibrium states in the colored-noise model for active matter I. Pairwise forces in the Fox and unified colored noise approximations
- Active Brownian particles at interfaces: An effective equilibrium approach
- Nonlocal stationary probability distributions and escape rates for an active Ornstein-Uhlenbeck particle
- Dynamics and escape of active particles in a harmonic trap
- A comparative study between two models of active cluster-crystals
- Active dumbbells: dynamics and morphology in the coexisting region
- Kramers escape of a self-propelled particle
- Active Brownian and inertial particles in disordered environments: short-time expansion of the mean-square displacement
- 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
- Active Brownian Particles Escaping a Channel in Single File
- Escape Kinetics of Self-Propelled Janus Particles from a Cavity: Numerical Simulations
- Effective potential method for active particles
- Transport of active particles in an open-wedge channel
- Time-dependent properties of interacting active matter: dynamical behavior of one-dimensional systems of self-propelled particles
- Disentangling the Behavioural Variability of Confined Cell Migration
- Noise activated granular dynamics
- Pressure, surface tension and curvature in active systems: A touch of equilibrium
- Narrow-escape time and sorting of active particles in circular domains
- Self-propelled particle in a nonconvex external potential: Persistent limit in one dimension
- Analogies between growing dense active matter and soft driven glasses
- The escape problem for active particles confined to a disc
- Activated barrier crossing dynamics of a Janus particle carrying cargo
- First passage time distribution of active thermal particles in potentials
- Escape rate of transiently active Brownian particle in one dimension
- Geometric control of bacterial surface accumulation