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

作者：Mondal Shrabani; Baura Alendu; Das Sudip; Bag Bidhan Chandra^*

来源：Physica A: Statistical Mechanics and Its Applications , 2018, 502: 58-76.

DOI：10.1016/j.physa.2018.02.110

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 biturnover 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.

• 出版日期2018-7-15