English

Active Brownian Motion in two-dimensions under Stochastic Resetting

Statistical Mechanics 2021-04-20 v1

Abstract

We study the position distribution of an active Brownian particle (ABP) in the presence of stochastic resetting in two spatial dimensions. We consider three different resetting protocols : (I) where both position and orientation of the particle are reset, (II) where only the position is reset, and (III) where only the orientation is reset with a certain rate r.r. We show that in the first two cases the ABP reaches a stationary state. Using a renewal approach, we calculate exactly the stationary marginal position distributions in the limiting cases when the resetting rate rr is much larger or much smaller than the rotational diffusion constant DRD_R of the ABP. We find that, in some cases, for a large resetting rate, the position distribution diverges near the resetting point; the nature of the divergence depends on the specific protocol. For the orientation resetting, there is no stationary state, but the motion changes from a ballistic one at short-times to a diffusive one at late times. We characterize the short-time non-Gaussian marginal position distributions using a perturbative approach.

Keywords

Cite

@article{arxiv.2008.03294,
  title  = {Active Brownian Motion in two-dimensions under Stochastic Resetting},
  author = {Vijay Kumar and Onkar Sadekar and Urna Basu},
  journal= {arXiv preprint arXiv:2008.03294},
  year   = {2021}
}

Comments

20 pages, 15 figures

R2 v1 2026-06-23T17:42:43.411Z