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State-dependent diffusion in a periodic potential for a nonequilibrium open system

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  • J. R. Chaudhuri
  • D. Barik

Abstract

The state dependent diffusion concerns with the Brownian motion of a particle in inhomogeneous media. Based on a system reservoir nonlinear coupling model, when the bath is modulated by an external Gaussian random noise with arbitrary decaying correlation time, we present a microscopic approach to state dependent diffusion and multiplicative noise for an open nonequilibrium system in terms of Langevin description and associated Fokker-Planck equation in position space in the overdamped limit. We examine the thermodynamic consistency and explore the possibility of observing a phase induced current as a consequence of state dependent diffusion and finite correlation time of external noise. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2008

Suggested Citation

  • J. R. Chaudhuri & D. Barik, 2008. "State-dependent diffusion in a periodic potential for a nonequilibrium open system," The European Physical Journal B: Condensed Matter and Complex Systems, Springer;EDP Sciences, vol. 63(1), pages 117-126, May.
    • Handle: RePEc:spr:eurphb:v:63:y:2008:i:1:p:117-126
    DOI: 10.1140/epjb/e2008-00211-1
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