International Journal of Theoretical Physics

, Volume 42, Issue 5, pp 1075-1084

First online:

Entropy and Wigner Distribution Functions Revisited

  • Joachim J. WłodarzAffiliated withDepartment of Theoretical Chemistry, Silesian University

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Several expressions for quantum entropy proposed in the literature are evaluated within the Weyl—Wigner—Moyal phase-space representation of quantum mechanics, with emphasis on some important subtle points in this approach. It has been found that the Rényi—Süßmann entropy and its linearization are distinguished because of their properties.

phase-space quantum mechanics Wigner distribution function entropy Rényi—Süßmann entropy linear entropy