Energy dependence on fractional charge for strongly interacting subsystems

The energies of a pair of strongly interacting subsystems with arbitrary noninteger charges are examined from closed- and open-system perspectives. An ensemble representation of the charge dependence is derived, valid at all interaction strengths. Transforming from resonance-state ionicity to ensemb...

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Bibliographic Details
Published in:Physical review letters 2006-12, Vol.97 (25), p.256402-256402, Article 256402
Main Authors: Valone, Steven M, Atlas, Susan R
Format: Article
Language:English
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Summary:The energies of a pair of strongly interacting subsystems with arbitrary noninteger charges are examined from closed- and open-system perspectives. An ensemble representation of the charge dependence is derived, valid at all interaction strengths. Transforming from resonance-state ionicity to ensemble charge dependence imposes physical constraints on the occupation numbers in the strong-interaction limit. For open systems, the chemical potential is evaluated using microscopic and thermodynamic models, leading to a novel correlation between ground-state charge and an electronic temperature.
ISSN:0031-9007
1079-7114
DOI:10.1103/physrevlett.97.256402