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

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

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.

Suggested Citation

  • Mondal, Shrabani & Baura, Alendu & Das, Sudip & Bag, Bidhan Chandra, 2018. "A generic signature of a fluctuating magnetic field: An additional turnover prior to the Kramers’ one," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 502(C), pages 58-76.
    • Handle: RePEc:eee:phsmap:v:502:y:2018:i:c:p:58-76
    DOI: 10.1016/j.physa.2018.02.110
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