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  • Application of the Gallavotti-Cohen fluctuation relation to thermostated steady states near equilibrium

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    Author(s)
    J. Evans, Denis
    Bernhardt, Debra
    Rondoni, Lamberto
    Griffith University Author(s)
    Bernhardt, Debra J.
    Year published
    2005
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    Abstract
    The fluctuation relation of the Gallavotti-Cohen fluctuation theorem (GCFT) concerns fluctuations in the phase-space compression rate of dissipative, reversible dynamical systems. It has been proven for Anosov systems, but it is expected to apply more generally. This raises the question of which non-Anosov systems satisfy the fluctuation relation. We analyze time-dependent fluctuations in the phase space compression rate of a class of N-particle systems that are at equilibrium or in near equilibrium steady states. This class does not include Anosov systems or isoenergetic systems; however, it includes most steady-state systems ...
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    The fluctuation relation of the Gallavotti-Cohen fluctuation theorem (GCFT) concerns fluctuations in the phase-space compression rate of dissipative, reversible dynamical systems. It has been proven for Anosov systems, but it is expected to apply more generally. This raises the question of which non-Anosov systems satisfy the fluctuation relation. We analyze time-dependent fluctuations in the phase space compression rate of a class of N-particle systems that are at equilibrium or in near equilibrium steady states. This class does not include Anosov systems or isoenergetic systems; however, it includes most steady-state systems considered in molecular-dynamics simulations of realistic systems. We argue that the fluctuations of the phase-space compression rate of these systems at or near equilibrium do not satisfy the fluctuation relation of the GCFT, although the discrepancies become somewhat smaller as the systems move further from equilibrium. In contrast, similar fluctuation relations for an appropriately defined dissipation function appear to hold both near and far from equilibrium.
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    Journal Title
    Physical Review E (Statistical, Nonlinear, and Soft Matter Physics)
    Volume
    71
    Publisher URI
    http://pre.aps.org/
    DOI
    https://doi.org/10.1103/PhysRevE.71.056120
    Copyright Statement
    © 2005 American Physical Society. Reproduced in accordance with the copyright policy of the publisher. This journal is available online - use hypertext links.
    Subject
    Mathematical sciences
    Physical sciences
    Engineering
    Publication URI
    http://hdl.handle.net/10072/4940
    Collection
    • Journal articles

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