Corrections to coupled Hartree–Fock theory: the rearrangement effect
✍ Scribed by A. K. Bhattacharya; R. K. Moitra; A. Mukherji
- Book ID
- 104578639
- Publisher
- John Wiley and Sons
- Year
- 1975
- Tongue
- English
- Weight
- 336 KB
- Volume
- 9
- Category
- Article
- ISSN
- 0020-7608
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✦ Synopsis
Abstract
In this communication we discuss a method of incorporating corrections to the coupled Hartree–Fock (CHF) formalism by introducing the so‐called “rearrangement effect.” In this we take account of the relaxation of the core orbitals when excitations from a starting Hartree–Fock wave function occur. The magnitude of this correction numerically is found to be quite significant for the polarizabilities of two‐electron atomic systems, results for which are reported.
📜 SIMILAR VOLUMES
The second-order correlation correction to the coupled Hartree-Fock perturbed energies is defined as the f&.t nonvanishing contribution due to perturbation-dependent correlation potential. This correction in fact includes some of higberorder correlation diagrams which appear due to perturbation-indu
## Abstract Different kinds of improved uncoupled Hartree–Fock methods are proposed for the calculation of second‐order perturbation energies. Using these methods inequalities are derived for the error of the uncoupled procedure with geometric approximation.