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arXiv · 1109.5892

Thermodynamics of genuine non-equilibrium states under feedback control

D. Abreu·U. Seifert
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Abstract

For genuine non-equilibrium states that even at fixed external control parameter exhibit dissipation, we extend the Hatano-Sasa equality to processes with feedback control. The resulting bound on the maximal extractable work is substantially sharper than what would follow from applying the Sagawa-Ueda equality to transitions involving such states. For repeated measurements at short enough intervals, the power thus extracted can even exceed the average cost of driving as demonstrated explicitly with a simple, analytically solvable example.

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D. Abreu, U. Seifert. 2011-12-07. Thermodynamics of genuine non-equilibrium states under feedback control. https://doi.org/10.1103/physrevlett.108.030601

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