Active Brownian motion in two dimensions under stochastic resetting

被引:44
|
作者
Kumar, Vijay [1 ]
Sadekar, Onkar [2 ]
Basu, Urna [3 ]
机构
[1] Skolkovo Inst Sci & Technol, Ctr Computat & Data Intens Sci & Engn, Nobelya Ulitsa 3, Moscow 121205, Russia
[2] Indian Inst Sci Educ & Res, Homi Bhabha Rd, Pune 411008, Maharashtra, India
[3] Raman Res Inst, CV Raman Ave, Bengaluru 560080, India
关键词
D O I
10.1103/PhysRevE.102.052129
中图分类号
O35 [流体力学]; O53 [等离子体物理学];
学科分类号
070204 ; 080103 ; 080704 ;
摘要
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: (1) where both position and orientation of the particle are reset, (2) where only the position is reset, and (3) where only the orientation is reset with a certain rate 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 r is much larger or much smaller than the rotational diffusion constant D-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.
引用
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页数:19
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