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System-adapted correlation energy density functionals from effective pair interactions

Paola Gori-Giorgi·Andreas Savin
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Abstract

We present and discuss some ideas concerning an ``average-pair-density functional theory'', in which the ground-state energy of a many-electron system is rewritten as a functional of the spherically and system-averaged pair density. These ideas are further clarified with simple physical examples. We then show that the proposed formalism can be combined with density functional theory to build system-adapted correlation energy functionals. A simple approximation for the unknown effective electron-electron interaction that enters in this combined approach is described, and results for the He series and for the uniform electron gas are briefly reviewed.

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BibTeXRIS

Paola Gori-Giorgi, Andreas Savin. 2005-05-28. System-adapted correlation energy density functionals from effective pair interactions. https://doi.org/10.1080/14786430500199120

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