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  • Contribution of the stochastic forces to the fluctuation theorem

    Author(s)
    Michel, Guillaume
    Bernhardt, Debra
    Griffith University Author(s)
    Bernhardt, Debra J.
    Year published
    2012
    Metadata
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    Abstract
    In some recent papers, the use of random forces has been related to a systematic breakdown of the fluctuation theorem. In the framework of nonequilibrium molecular dynamics, we provide a derivation of this theorem for systems driven by both deterministic and stochastic forces. It turns out that it is still valid and describes the total dissipation, explicitly the sum of two dimensionless works for which fluctuation relations may fail. We numerically study their range of validity, comment on experimental results, and point out in which limit a noise can be neglected.In some recent papers, the use of random forces has been related to a systematic breakdown of the fluctuation theorem. In the framework of nonequilibrium molecular dynamics, we provide a derivation of this theorem for systems driven by both deterministic and stochastic forces. It turns out that it is still valid and describes the total dissipation, explicitly the sum of two dimensionless works for which fluctuation relations may fail. We numerically study their range of validity, comment on experimental results, and point out in which limit a noise can be neglected.
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    Journal Title
    Physical Review E
    Volume
    85
    DOI
    https://doi.org/10.1103/PhysRevE.85.042102
    Subject
    Soft Condensed Matter
    Thermodynamics and Statistical Physics
    Mathematical Sciences
    Physical Sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/48595
    Collection
    • Journal articles

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