A brief introduction to observational entropy

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.

Review of recent developments in observational entropy in isolated systems. 8+4 pages, 3 figures, 1 table

References in corpus (2)

• Proof of the Ergodic Theorem and the H-Theorem in Quantum Mechanics
• Quantum operator entropies under unitary evolution

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