Rigorous relationships among quantum-mechanical kinetic energy and atomic information entropies: upper and lower bounds

Gadre, Shridhar R. ; Bendale, Rajeev D. (1987) Rigorous relationships among quantum-mechanical kinetic energy and atomic information entropies: upper and lower bounds Physical Review A, 36 (4). pp. 1932-1935. ISSN 1050-2947

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Official URL: http://pra.aps.org/abstract/PRA/v36/i4/p1932_1

Related URL: http://dx.doi.org/10.1103/PhysRevA.36.1932

Abstract

An uncertainty-type lower bound [I. Bialynicki-Birula and J. Mycielski, Commun. Math. Phys. 44, 129 (1975)] to the information-entropy sum in complementary spaces has recently been reformulated by Gadre et al. [Phys. Rev. A 32, 2602 (1985)] in terms of the respective one-particle probability densities. This bound has been exploited to derive rigorous upper as well as lower bounds to the information entropies and their sum in terms of the corresponding second moments of their distributions. Thus the present work establishes a direct connection, as suggested by Sears, Parr, and Dinur [Israel J. Chem. 19, 165 (1980)], between the quantum-mechanical kinetic energy and information entropy in position space. It has also been demonstrated that given at least one arbitrary moment-type constraint in each space, it is possible to derive an upper bound to the information entropy sum in complementary spaces.

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