Fluctuations of rotational and translational degrees of freedom in an interacting active dumbbell system

Abstract

We study the dynamical properties of a two-dimensional ensemble of self-propelled dumbbells with only repulsive interactions. After summarizing the behavior of the translational and rotational mean-square displacements in the homogeneous phase that we established in a previous study, we analyze their fluctuations. We study the dependence of the probability distribution functions in terms of the Péclet number, describing the relative role of active forces and thermal fluctuations, and of particle density.

arXiv admin note: text overlap with arXiv:1501.04054

References in corpus (10)

• Self-motile colloidal particles: from directed propulsion to random walk
• Physics of Microswimmers - Single Particle Motion and Collective Behavior
• Athermal Phase Separation of Self-Propelled Particles with no Alignment
• Active Brownian Particles. From Individual to Collective Stochastic Dynamics
• Propulsion of a molecular machine by asymmetric distribution of reaction--products
• Diffusive transport without detailed balance in motile bacteria: Does microbiology need statistical physics?
• Motility-induced phase separation and coarsening in active matter
• Clustering and heterogeneous dynamics in a kinetic Monte-Carlo model of self-propelled hard disks
• Colloids in a bacterial bath: simulations and experiments
• Dynamics of a homogeneous active dumbbell system

Cited by in corpus (6)

• Motility-induced phase separation and coarsening in active matter
• Large fluctuations and dynamic phase transition in a system of self-propelled particles
• Phase co-existence in bidimensional passive and active dumbbell systems
• Phase behavior of active Brownian disks, spheres, and dumbbells
• Effective temperatures in inhomogeneous passive and active bidimensional Brownian particle systems
• Active dumbbells: dynamics and morphology in the coexisting region