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

Journal Article · Fri Jun 01 04:00:00 EDT 1979 · Int. J. Quant. Chem.; (United States)

DOI:https://doi.org/10.1002/qua.560150611· OSTI ID:5925534

Wilson, S; Silver, D M

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. 18 references.

• Research Organization: Johns Hopkins Univ., Laurel, MD
• OSTI ID: 5925534
• Journal Information: Int. J. Quant. Chem.; (United States), Journal Name: Int. J. Quant. Chem.; (United States) Vol. 15:6; ISSN IJQCB
• Country of Publication: United States
• Language: English

Related Subjects

640305* -- Atomic
Molecular & Chemical Physics-- Atomic & Molecular Theory-- (-1987)
74 ATOMIC AND MOLECULAR PHYSICS
ATOMS
CORRECTIONS
DIAGRAMS
ELECTRONIC STRUCTURE
HARTREE-FOCK METHOD
MOLECULES
PERTURBATION THEORY
SERIES EXPANSION