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.

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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