Shenker, Orly and Hemmo, Meir (2006) Von Neumann's Entropy Does Not Correspond to Thermodynamic Entropy. UNSPECIFIED.
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Abstract Von Neumann (1932, Ch. 5) argued by means of a thought experiment involving measurements of spin observables that the quantum mechanical quantity is conceptually equivalent to thermodynamic entropy. We analyze Von Neumann's thought experiment and show that his argument fails. Over the past few years there has been a dispute in the literature regarding the Von Neumann entropy. It turns out that each contribution to this dispute (Shenker 1999, Henderson 2001, Hemmo 2003) addressed a different special case. In this paper we generalize the discussion and examine the full matrix of possibilities that are relevant for the evaluation and understanding of Von Neumann’s argument.
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|Keywords:||entropy, Von Neumann entropy, information entropy, Second Law of thermodynamics, though experiment, measurement|
|Subjects:||General Issues > Thought Experiments
General Issues > Philosophers of Science
Specific Sciences > Physics
General Issues > History of Science Case Studies
General Issues > Realism/Anti-realism
General Issues > Operationalism/Instrumentalism
Specific Sciences > Probability/Statistics
General Issues > Reductionism/Holism
Specific Sciences > Physics > Statistical Mechanics/Thermodynamics
Specific Sciences > Physics > Quantum Mechanics
|Depositing User:||Dr Orly R. Shenker|
|Date Deposited:||11 Dec 2007|
|Last Modified:||07 Oct 2010 15:15|
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