Information theory of quantum systems with some hydrogenic applications

Details Information theory of quantum systems with some hydrogenic applications Information theory of quantum systems with some hydrogenic applications

2010-09-14

arxiv.org/abs/1009.2687v1

Physics

Quantum Physics

9 pages, 3 figures

Scientific paper

The information-theoretic representation of quantum systems, which complements the familiar energy description of the density-functional and wave-function-based theories, is here discussed. According to it, the internal disorder of the quantum-mechanical non-relativistic systems can be quantified by various single (Fisher information, Shannon entropy) and composite (e.g. Cramer-Rao, LMC shape and Fisher-Shannon complexity) functionals of the Schr\"odinger probability density. First, we examine these concepts and its application to quantum systems with central potentials. Then, we calculate these measures for hydrogenic systems, emphasizing their predictive power for various physical phenomena. Finally, some recent open problems are pointed out.

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