Msller-Plesset perturbation calculations (MPn) up to fiftieth order, within both the restricted (RHF) and unrestricted Hartree-Fock (UHF) frameworks, have been used to examine the He:+ ground-state potential curve. The bond lengths of the equilibrium and transition structures have been optimized at
Correlation energy estimators based on Møller-Plesset perturbation theory
✍ Scribed by Herbert H.H. Homeier
- Book ID
- 113258991
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 1023 KB
- Volume
- 366
- Category
- Article
- ISSN
- 0166-1280
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📜 SIMILAR VOLUMES
As a formulation for calculating the dynamic polarizabilities and hyperpolarizabilities, two different types of the time-dependent Møller᎐Plesset Ž . perturbation theory MPPT are presented: the MPPT in the quasienergy derivative Ž . Ž . method QED᎐MPPT and the MPPT in the energylike derivative metho
## Abstract Based on a partitioning of the total correlation energy into contributions from parallel‐ and antiparallel‐spin pairs of electrons, a modified third‐order Møller–Plesset (MP) perturbation theory is developed. The method, termed SCS–MP3 (SCS for spin‐component‐scaled) continues previous