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Fourth-Order terms in the diagrammatic perturbation expansion for the electronic energy of atoms and molecules

✍ Scribed by Stephen Wilson; David M. Silver

Publisher
John Wiley and Sons
Year
1979
Tongue
English
Weight
466 KB
Volume
15
Category
Article
ISSN
0020-7608

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✦ Synopsis

Abstract

Third‐order diagrammatic perturbation theory provides a simple and accurate description of the electronic structure of atoms and molecules beyond that afforded by independent electron models. The largest corrections to such treatments, the fourth‐order terms, are presented and discussed. All of the diagrams, which arise when the closed‐shell Hartree–Fock function is utilized as a reference function, are given through fourth order.

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