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TT: Fachverband Tiefe Temperaturen

TT 19: Quantum Coherence (joint session TT/DY)

TT 19.1: Hauptvortrag

Montag, 18. März 2024, 16:15–16:45, H 3025

Quantum thermodynamics and its statistical mechanics: Facts, debatable issues and still unsolved problems — •Peter Hänggi — 1 University of Augsburg, Dept. Physics, 86159 Augsburg, Germany

The present state of the art of this topic contains several subtleties, pitfalls, inconsistencies as well as still open issues. Those are present in both, classical and quantum settings. Even at manifest thermal equilibrium, these thermodynamic notions become surprisingly tricky when strong system-bath interactions matter. A particular intriguing difficulty comprises the notorious invasive character of quantum measurements; i.e., the role of quantum back-action. Fact is: If anything can be said at all, - it preferably should be stated most clearly (Ludwig Wittgenstein, 1889-1951).

[1] D. Castelvecchi, Nature 543 (2017) 597 ; Z. Merali, Nature 551 (2017) 20

[2] P. Hänggi and P. Talkner, Nature Physics 11 (2015) 108

[3] P. Talkner and P. Hänggi, Phys. Rev. E 93 (2016) 022131

[4] P. Talkner and P. Hänggi, Rev. Mod. Phys. 92 (2020) 041002.

Keywords: Quantum Thermodynamics; Statistical Mechanics; Notions of Work and Heat