Chiral active matter in external potentials

Abstract

We investigate the interplay between chirality and confinement induced by the presence of an external potential. For potentials having radial symmetry, the circular character of the trajectories induced by the chiral motion reduces the spatial fluctuations of the particle, thus providing an extra effective confining mechanism, that can be interpreted as a lowering of the effective temperature. In the case of non-radial potentials, for instance, with an elliptic shape, chirality displays a richer scenario. Indeed, the chirality can break the parity symmetry of the potential that is always fullfilled in the non-chiral system. The probability distribution displays a strong non-Maxwell-Boltzmann shape that emerges in cross-correlations between the two Cartesian components of the position, that vanishes in the absence of chirality or when radial symmetry of the potential is restored. These results are obtained by considering two popular models in active matter, i.e. chiral Active Brownian particles and chiral active Ornstein-Uhlenbeck particles.

References in corpus (24)

• Pressure and Phase Equilibria in Interacting Active Brownian Spheres
• Sedimentation, trapping, and rectification of dilute bacteria
• A self-propelled particle in an external potential: is there an effective temperature?
• Dynamics of a Brownian circle swimmer
• Effective Interactions in Active Brownian Suspensions
• Spontaneous velocity alignment in Motility-induced Phase Separation
• Multidimensional Stationary Probability Distribution for Interacting Active Particles
• Circular swimming motility and disordered hyperuniform state in an algae system
• Active escape dynamics: the effect of persistence on barrier crossing
• Rotation and propulsion in 3d active chiral droplets
• Flocking without alignment interactions in attractive active Brownian particles
• Diffusion of active chiral particles
• Diffusion of Chiral Janus Particles in a Sinusoidal Channel
• Applicability of Effective Pair Potentials for Active Brownian Particles
• The Parental Active Model: a unifying stochastic description of self-propulsion
• Simultaneous Phase Separation and Pattern Formation in Chiral Active Mixtures
• Chirality separation of mixed chiral microswimmers in a periodic channel
• Analytic Solution of an Active Brownian Particle in a Harmonic Well
• Brownian motion of a circle swimmer in a harmonic trap
• Active Colloids in Harmonic Optical Potentials
• Effective equilibrium states in mixtures of active particles driven by colored noise
• Exact position distribution of a harmonically-confined run-and-tumble particle in two dimensions
• A moment approach to non-Gaussian colored noises
• Macro to micro phase separation in a collection of chiral active swimmers

Cited by in corpus (10)

• Impact of chirality on active Brownian particle: Exact moments in two and three dimensions
• Emergent Mesoscale Correlations in Active Solids with Noisy Chiral Dynamics
• Three-dimensional chiral active Ornstein-Uhlenbeck model for helical motion of microorganisms
• Active Brownian particle under stochastic position and orientation resetting in a harmonic trap
• Confined active particles with spatially dependent Lorentz force: an odd twist to the "best Fokker-Planck approximation"
• Emergence of oscillatory states of self-propelled colloids under optical confinement
• Spiral folding of a flexible chain of chiral active particles
• Chirality, confinement and dimensionality govern re-entrant transitions in active matter
• Inertia-chirality interplay in active Brownian motion: exact dynamics and phase maps
• Kinetic Theory of Chiral Active Disks: Odd Transport and Torque Density