Von Neumann's entropy does not correspond to thermodynamic entropy

Meir Hemmo*, Orly Shenker

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

16 Scopus citations

Abstract

Von Neumann argued by means of a thought experiment involving measurements of spin observables that the quantum mechanical quantity SVN = -kTr(ρlogρ) is conceptually equivalent to thermodynamic entropy. We analyze Von Neumann's thought experiment and show that his argument fails.

Original languageAmerican English
Pages (from-to)153-174
Number of pages22
JournalPhilosophy of Science
Volume73
Issue number2
DOIs
StatePublished - Apr 2006
Externally publishedYes

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