Volume 125, Number 4, February 2019
|Number of page(s)||6|
|Published online||25 March 2019|
Marginal and conditional second laws of thermodynamics
1 Berkeley Institute for Theoretical Science - Berkeley, CA, USA
2 University of Hawai‘i at Mānoa, Department of Information and Computer Sciences and Department of Physics and Astronomy - Honolulu, HI 96822, USA
Received: 5 September 2018
Accepted: 16 January 2019
We show that the total entropy production of a strongly coupled bipartite system can be partitioned into components, which can be used to define local versions of the Second Law that are valid without the usual idealization of weak coupling. The key insight is that causal intervention offers a way to identify those parts of the entropy production that result from feedback between the subsystems. All central relations describing the thermodynamics of strongly coupled systems follow from this observation in a few lines.
PACS: 05.70.Ln – Nonequilibrium and irreversible thermodynamics / 05.40.-a – Fluctuation phenomena, random processes, noise, and Brownian motion
© EPLA, 2019
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