Quantum Entropy Derived from First Principles

Frank Hansen

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)


The most fundamental properties of quantum entropy are derived by considering the union of two ensembles. We discuss the limits these properties put on an entropy measure and obtain that they uniquely determine the form of the entropy functional up to normalisation. In particular, the result implies that all other properties of quantum entropy may be derived from these first principles.

Original languageEnglish
Pages (from-to)799-808
Number of pages10
JournalJournal of Statistical Physics
Issue number5
Publication statusPublished - 2016 Dec 1


  • Entropic function
  • First principles
  • Quantum entropy

ASJC Scopus subject areas

  • Statistical and Nonlinear Physics
  • Mathematical Physics


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