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Escape rate of transiently active Brownian particle in one dimension
Tekijät: Scacchi, A.; Brader, J. M.; Sharma, A.
Kustantaja: AMER PHYSICAL SOC
Kustannuspaikka: COLLEGE PK
Julkaisuvuosi: 2019
Journal: Physical review E
Tietokannassa oleva lehden nimi: PHYSICAL REVIEW E
Lehden akronyymi: PHYS REV E
Artikkelin numero: 012601
Vuosikerta: 100
Numero: 1
Sivujen määrä: 5
ISSN: 2470-0045
eISSN: 2470-0053
DOI: https://doi.org/10.1103/PhysRevE.100.012601
Tiivistelmä
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.
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.
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