Thermodynamic Reversibility in Feedback Processes

Details Thermodynamic Reversibility in Feedback Processes Thermodynamic Reversibility in Feedback Processes

2011-04-02

arxiv.org/abs/1104.0332v2

Europhys. Lett. 95, 10005 (2011)

Physics

Condensed Matter

Statistical Mechanics

6 pages, 4, figures, accepted in EPL, expanded discussion of thermodynamic reversibility

Scientific paper

The sum of the average work dissipated plus the information gained during a thermodynamic process with discrete feedback must exceed zero. We demonstrate that the minimum value of zero is attained only by feedback-reversible processes that are indistinguishable from their time-reversal, thereby extending the notion of thermodynamic reversibility to feedback processes. In addition, we prove that in every realization of a feedback-reversible process the sum of the work dissipated and change in uncertainty is zero.

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