A generic signature of a fluctuating magnetic field: An additional turnover prior to the Kramers’ one

Shrabani Mondal, Alendu Baura, Sudip Das and Bidhan Chandra Bag

Physica A: Statistical Mechanics and its Applications, 2018, vol. 502, issue C, 58-76

Abstract: In this paper we have presented the dynamics of a Brownian particle which is coupled to a thermal bath in the presence of a fluctuating magnetic field (FMF). By virtue of the FMF the Brownian particle experiences a time dependent damping strength for the x−direction motion even in the presence of a stationary Markovian thermal bath. There is a transition state along this direction. The time dependent damping strength leads to appear a bi-turnover phenomenon in the variation of the barrier crossing rate as a function of the thermal bath induced damping strength. It is a generic signature of the fluctuating magnetic field.

Date: 2018
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Persistent link: https://EconPapers.repec.org/RePEc:eee:phsmap:v:502:y:2018:i:c:p:58-76

DOI: 10.1016/j.physa.2018.02.110

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