Article (Scientific journals)
Overdamped stochastic thermodynamics with multiple reservoirs
Murashita, Yuto; Esposito, Massimiliano
2016In Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics, 94 (062148)
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Abstract :
[en] After establishing stochastic thermodynamics for underdamped Langevin systems in contact with multiple reservoirs, we derive its overdamped limit using timescale separation techniques. The overdamped theory is different from the naive theory that one obtains when starting from overdamped Langevin or Fokker-Planck dynamics and only coincides with it in the presence of a single reservoir. The reason is that the coarse-grained fast momentum dynamics reaches a nonequilibrium state, which conducts heat in the presence of multiple reservoirs. The underdamped and overdamped theory are both shown to satisfy fundamental fluctuation theorems. Their predictions for the heat statistics are derived analytically for a Brownian particle on a ring in contact with two reservoirs and subjected to a nonconservative force and are shown to coincide in the long-time limit.
Disciplines :
Physics
Author, co-author :
Murashita, Yuto;  University of Tokyo > Department of Physics
Esposito, Massimiliano  ;  University of Luxembourg > Faculty of Science, Technology and Communication (FSTC) > Physics and Materials Science Research Unit
External co-authors :
yes
Language :
English
Title :
Overdamped stochastic thermodynamics with multiple reservoirs
Publication date :
29 December 2016
Journal title :
Physical Review. E, Statistical, Nonlinear, and Soft Matter Physics
ISSN :
1550-2376
Publisher :
American Physical Society, College Park, United States - Maryland
Volume :
94
Issue :
062148
Peer reviewed :
Peer Reviewed verified by ORBi
Focus Area :
Physics and Materials Science
FnR Project :
FNR1165601 - A New Thermodynamic Theory For Small Fluctuating Systems: From Nanodevices To Cellular Biology, 2011 (01/01/2012-30/06/2017) - Massimiliano Esposito
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