Comment on "Entropy and Wigner function"

Details Comment on "Entropy and Wigner function" Comment on "Entropy and Wigner function"

2002-04-28

arxiv.org/abs/quant-ph/0204163v1

Physics

Quantum Physics

2 pages, no figures, commenting on quant-ph/0203102, rejected by PRE !

Scientific paper

In a recent paper [PRE 62, 4665 (2000)] (quant-ph/0203102) Manfredi and Feix proposed an alternative definition of quantum entropy based on Wigner phase-space distribution functions and discussed its properties. They proposed also some simple rules to construct positive-definite Wigner functions which are crucial in their discussion. We show, however, that the main results obtained and their discussion are incorrect.

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