Reference : Efficiency Statistics at All Times: Carnot Limit at Finite Power
Scientific journals : Article
Physical, chemical, mathematical & earth Sciences : Physics
http://hdl.handle.net/10993/21452
Efficiency Statistics at All Times: Carnot Limit at Finite Power
English
Polettini, Matteo mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
Verley, Gatien mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit >]
Esposito, Massimiliano mailto [University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit]
2015
Physical Review Letters
114
5
Yes (verified by ORBilu)
International
0031-9007
[en] FLUCTUATION THEOREM THERMODYNAMICS VERIFICATION
[en] We derive the statistics of the efficiency under the assumption that thermodynamic fluxes fluctuate with normal law, parametrizing it in terms of time, macroscopic efficiency, and a coupling parameter zeta. It has a peculiar behavior: no moments, one sub-, and one super-Carnot maxima corresponding to reverse operating regimes (engine or pump), the most probable efficiency decreasing in time. The limit zeta -> 0 where the Carnot bound can be saturated gives rise to two extreme situations, one where the machine works at its macroscopic efficiency, with Carnot limit corresponding to no entropy production, and one where for a transient time scaling like 1/zeta microscopic fluctuations are enhanced in such a way that the most probable efficiency approaches the Carnot limit at finite entropy production.
http://hdl.handle.net/10993/21452
10.1103/PhysRevLett.114.050601
Cited References Count:33|CB8FM|AMER PHYSICAL SOC|ONE PHYSICS ELLIPSE, COLLEGE PK, MD 20740-3844 USA|ISI Document Delivery No.:CB8FM|Funding:This research was supported by the National Research Fund Luxembourg in the frame of project FNR/A11/02 and of Postdoc Grant No. 5856127.
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