Dresden 2020 – scientific programme

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DY: Fachverband Dynamik und Statistische Physik

DY 48: Statistical Physics far from Thermal Equilibrium

DY 48.1: Talk

Thursday, March 19, 2020, 09:30–09:45, ZEU 147

Entropy Production in Open Systems: The Predominant Role of Intraenvironment Correlations — •Krzysztof Ptaszyński¹ and Massimiliano Esposito² — ¹Institute of Molecular Physics, Polish Academy of Sciences, Mariana Smoluchowskiego 17, 60-179 Poznań, Poland — ²Complex Systems and Statistical Mechanics, Physics and Materials Science Research Unit, University of Luxembourg, L-1511 Luxembourg, Luxembourg

We show [1] that the entropy production in small open systems coupled to environments made of extended baths is predominantly caused by the displacement of the environment from equilibrium rather than, as often assumed, the mutual information between the system and the environment. The latter contribution is strongly bounded from above by the Araki-Lieb inequality, and therefore is not time-extensive, in contrast to the entropy production itself. Furthermore, we show that in the thermodynamic limit the entropy production is associated mainly with generation of the mutual information between initially uncorrelated environmental degrees of freedom. We confirm our results with exact numerical calculations of the system-environment dynamics.

[1] K. Ptaszyński, M. Esposito, Phys. Rev. Lett. 123, 200603 (2019)