Correlated wave-function theory for many-center many-electron problems
β Scribed by Dmitry A. Shershakov; Vladimir V. Nechaev
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 174 KB
- Volume
- 69
- Category
- Article
- ISSN
- 0020-7608
No coin nor oath required. For personal study only.
β¦ Synopsis
The correlated electronic wave-function theory developed by S. Obara w Ε½ .x and K. Hirao Bull. Chem. Soc. Jpn. 66, 3300 1993 , as applied to two-electron molecular systems, is generalized to many-center many-electron problems. The exact formulas for effective Hamiltonian operators are given. The rules for the calculation of matrix elements with three-electron operators over Slater determinants are formulated. From the energyminimum principle, the system of master equations is derived for variational coefficients of a trial wave function for the molecules with closed electronic shells.
π SIMILAR VOLUMES
using the group symmetrical localized molecular orbitals (SLhfOs) as configuration-generating orbitals (CGOs) of many-electron wave functions, the symmetry adaptation of many-electron spaces is greatly simplified, and novel orthogonal bonded functions (OBFs), as complete space-and spin-adapted antis
A new non-local exchange energy functionalE,[ n] is developed within the weighted density approximation (WDA) and a local Coulomb correlation energy functional EJn] is developed within the local density approximation (LDA) for the calculation of ground state energies. Both fimctionals include novel
Group theoretic methods are presented for the transformations of integrals and the evaluation of matrix elements encountered in multiconfigurational self-consistent field (MCSCF) and configuration interaction (CI) calculations. The method has the advantages of needing only to deal with a symmetry un