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Time-symmetric fluctuations in nonequilibrium systems

Christian Maes·Maarten H. van Wieren
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Abstract

For nonequilibrium steady states, we identify observables whose fluctuations satisfy a general symmetry and for which a new reciprocity relation can be shown. Unlike the situation in recently discussed fluctuation theorems, these observables are time-reversal symmetric. That is essential for exploiting the fluctuation symmetry beyond linear response theory. Besides time-reversal, a crucial role is played by the reversal of the driving fields, that further resolves the space-time action. In particular, the time-symmetric part in the space-time action determines second order effects of the nonequilibrium driving.

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Christian Maes, Maarten H. van Wieren. 2006-06-27. Time-symmetric fluctuations in nonequilibrium systems. https://doi.org/10.1103/physrevlett.96.240601

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