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- Title
Stochastic thermodynamics of a finite quantum system coupled to a heat bath.
- Authors
Schmidt, Heinz-Jürgen; Schnack, Jürgen; Gemmer, Jochen
- Abstract
We consider a situation where an N-level system (NLS) is coupled to a heat bath without being necessarily thermalized. For this situation, we derive general Jarzynski-type equations and conclude that heat and entropy is flowing from the hot bath to the cold NLS and, vice versa, from the hot NLS to the cold bath. The Clausius relation between increase of entropy and transfer of heat divided by a suitable temperature assumes the form of two inequalities which have already been considered in the literature. Our approach is illustrated by an analytical example.
- Subjects
QUANTUM thermodynamics; HEAT equation; ENTROPY; HEAT transfer
- Publication
Zeitschrift für Naturforschung Section A: A Journal of Physical Sciences, 2021, Vol 76, Issue 8, p731
- ISSN
0932-0784
- Publication type
Article
- DOI
10.1515/zna-2021-0095