Effect of reorientation statistics on torque response of self propelled particles
arXiv:1508.05887 · doi:10.1103/PhysRevE.92.052143
Abstract
We consider the dynamics of self-propelled particles subject to external torques. Two models for the reorientation of self-propulsion are considered, run-and-tumble particles, and active Brownian particles. Using the standard tools of non-equilibrium statistical mechanics we show that the run and tumble particles have a more robust response to torques. This macroscopic signature of the underlying reorientation statistics can be used to differentiate between the two types of self propelled particles. Further this result might indicate that run and tumble motion is indeed the evolutionarily stable dynamics for bacteria.
7 pages, 5 figures
References in corpus (13)
- Motility-Induced Phase Separation
- Statistical Mechanics of Interacting Run-and-Tumble Bacteria
- Designing phoretic micro- and nano-swimmers
- When are active Brownian particles and run-and-tumble particles equivalent? Consequences for motility-induced phase separation
- Pressure is not a state function for generic active fluids
- Diffusive transport without detailed balance in motile bacteria: Does microbiology need statistical physics?
- Pressure and Phase Equilibria in Interacting Active Brownian Spheres
- Sedimentation, trapping, and rectification of dilute bacteria
- Active Brownian Particles and Run-and-Tumble Particles: a Comparative Study
- Rectification of Swimming Bacteria and Self Driven Particle Systems by Arrays of Asymmetric Barriers
- Nonequilibrium equation of state in suspensions of active colloids
- Run-and-tumble particles with hydrodynamics: sedimentation, trapping and upstream swimming
- Phase Separation and Emergent Structures in an Active Nematic