A brief introduction to observational entropy

• URL: http://arxiv.org/abs/2008.04409v2
• Date: Wed, 27 Oct 2021 07:37:24 GMT
• Title: A brief introduction to observational entropy
• Authors: Dominik \v{S}afr\'anek, Anthony Aguirre, Joseph Schindler, J. M. Deutsch
• Abstract summary: observational entropy has been developed as a quantum generalization of Boltzmann entropy. This paper reviews the construction, interpretation, most important properties, and some applications of this framework.
• Score: 0.0
• License: http://arxiv.org/licenses/nonexclusive-distrib/1.0/
• Abstract: In the past several years, observational entropy has been developed as both a (time-dependent) quantum generalization of Boltzmann entropy, and as a rather general framework to encompass classical and quantum equilibrium and non-equilibrium coarse-grained entropy. In this paper we review the construction, interpretation, most important properties, and some applications of this framework. The treatment is self-contained and relatively pedagogical, aimed at a broad class of researchers.

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