Pattern formation in self-propelled particles with density-dependent motility

Abstract

We study the behaviour of interacting self-propelled particles, whose self-propulsion speed decreases with their local density. By combining direct simulations of the microscopic model with an analysis of the hydrodynamic equations obtained by explicitly coarse graining the model, we show that interactions lead generically to the formation of a host of patterns, including moving clumps, active lanes and asters. This general mechanism could explain many of the patterns seen in recent experiments and simulations.

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Cited by in corpus (39)

• Motility-Induced Phase Separation
• When are active Brownian particles and run-and-tumble particles equivalent? Consequences for motility-induced phase separation
• Pressure and Phase Equilibria in Interacting Active Brownian Spheres
• From Phase to Micro-Phase Separation in Flocking Models: The Essential Role of Non-Equilibrium Fluctuations
• Large-scales patterns in a minimal cognitive flocking model: incidental leaders, nematic patterns, and aggregates
• Active colloidal suspensions: Clustering and phase behavior
• Motility-induced phase separation and coarsening in active matter
• Boltzmann-Ginzburg-Landau approach for continuous descriptions of generic Vicsek-like models
• Robust boundary flow in chiral active fluid
• Critical Phenomenon of the Order-Disorder Transition in Incompressible Flocks
• Simultaneous Phase Separation and Pattern Formation in Chiral Active Mixtures
• Mesoscale pattern formation of self-propelled rods with velocity reversal
• Giant fluctuations and structural effects in a flocking epithelium
• Activity-induced clustering in model dumbbell swimmers: The role of hydrodynamic interactions
• Phase Separation and Emergent Structures in an Active Nematic
• From scalar to polar active matter: Connecting simulations with mean-field theory
• Rheology of active fluids
• Run-and-Tumble particle in inhomogeneous media in one dimension
• Numerical treatment of the Boltzmann equation for self-propelled particle systems
• Flocking with a $q$-fold discrete symmetry: band-to-lane transition in the active Potts model
• Pattern formation in polymerising actin flocks: spirals, spots and waves without nonlinear chemistry
• Estimation of the critical behavior in an active colloidal system with Vicsek-like interactions
• Morphology and flow patterns in highly asymmetric active emulsions
• Chaotic and periodical dynamics of active chiral droplets
• Theoretical approaches to the steady-state statistical physics of interacting dissipative units
• Synchronization and collective motion of globally coupled Brownian particles
• Order-disorder transition in active nematic: A lattice model study
• Pattern formation and phase transition in the collective dynamics of a binary mixture of polar self-propelled particles
• Optimal collision avoidance in swarms of active Brownian particles
• Braiding a flock: winding statistics of interacting flying spins
• Phase transitions on a class of generalized Vicsek-like models of collective motion
• Discussion on Ohta et al., "Traveling bands in self-propelled soft particles"
• Gaussian theory for spatially distributed self-propelled particles
• Aggregation of self-propelled particles with sensitivity to local order
• Pattern-Acquisition in Finite, Heterogenous, Delay-Coupled Swarms
• Flocking and spreading dynamics in populations of self-propelled agents
• A Field-Theoretic Model for Chemotaxis in Run and Tumble Particles
• Noise Induced Pattern Switching in Randomly Distributed Delayed Swarm Patterns
• Chiral Active Matter