Emergent States in Systems of Chiral Self-Propelled Rods

Abstract

We study inherently chiral self-propelled particles, self-rotating at a fixed frequency, in two dimensions, subjected to nematic alignment interactions and rotational noise. By means of both, homogeneous and spatially resolved mean field kinetic theory, we identify various different flocking states. We confirm the presence of the predicted phases using agent-based simulations, in particular, an homogeneous nematic phase at low frequencies, followed by a microflock pattern phase at larger frequencies, characterized by finite-size nematic clusters. We emphasize that special care has to be taken within the simulations in order to avoid artifacts, and present a non-standard simulation technique in order to avoid them.

arXiv comment10 pages, 4 figures

References in corpus (19)

• Active Particles in Complex and Crowded Environments
• Collective motion
• Emergence of macroscopic directed motion in populations of motile colloids
• Statistical mechanics for natural flocks of birds
• Circular motion of asymmetric self-propelling particles
• Non-equilibrium clustering of self-propelled rods
• Large-scale collective properties of self-propelled rods
• Boltzmann and hydrodynamic description for self-propelled particles
• Self-Propelled Rods: Insights and Perspectives for Active Matter
• The Rotating Vicsek Model: Pattern Formation and Enhanced Flocking in Chiral Active Matter
• The Physics of the Vicsek Model
• Kinetic Theory of Flocking: Derivation of Hydrodynamic Equations
• Activity induced synchronization: From Mutual Flocking to Chiral Self-Sorting
• Active Curved Polymers form Vortex Patterns on Membranes
• Nonequilibrium Statistical Mechanics of Self-propelled Hard Rods
• Reconfigurable Artificial Microswimmers with Internal Feedback
• Comparison between Smoluchowski and Boltzmann approaches for self-propelled rods
• Active Brownian Rods
• A Quantitative Kinetic Theory of Flocking with Three-Particle-Closure