A1 Refereed original research article in a scientific journal

Escape rate of transiently active Brownian particle in one dimension




AuthorsScacchi, A.; Brader, J. M.; Sharma, A.

PublisherAMER PHYSICAL SOC

Publishing placeCOLLEGE PK

Publication year2019

JournalPhysical review E

Journal name in sourcePHYSICAL REVIEW E

Journal acronymPHYS REV E

Article number 012601

Volume100

Issue1

Number of pages5

ISSN2470-0045

eISSN2470-0053

DOIhttps://doi.org/10.1103/PhysRevE.100.012601(external)


Abstract
Activity significantly enhances the escape rate of a Brownian particle over a potential barrier. Whereas constant activity has been extensively studied in the past, little is known about the effect of time-dependent activity on the escape rate of the particle. In this paper, we study the escape problem for a Brownian particle that is transiently active; the activity decreases rapidly during the escape process. Using the effective equilibrium approach, we analytically calculate the escape rate under the assumption that the particle is either completely passive or fully active when crossing the barrier. We perform numerical simulations of the escape process in one dimension and find good agreement with the theoretical predictions.



Last updated on 2025-27-01 at 19:54