## Abstract The leading terms in the asymptotic 1/__R__ expansion of the wave functions and energies of various βsymmetryβadaptedβ perturbation schemes for intermolecular forces, as well as for the βpolarization approximationβ (PA) are derived for the H ground state, both exactly (i.e., to infinite
The symmetry of ground states under perturbation
β Scribed by Gary C. Hamrick; Charles Radin
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 292 KB
- Volume
- 21
- Category
- Article
- ISSN
- 0022-4715
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π SIMILAR VOLUMES
A comparison is presented for the ground state of the helium atom of high order Rayleigh-Schri)dinger perturbation theories based upon a hydrogenic. a screened hydrogenic, a Hartree and a modified Hartree local zero-order hamiltonian. The hydrogenic zero-order schemes are superior tc the Hartree zer
## Abstract A detailed analysis of a severe intruder state problem in the multistate multireference perturbation theory (MSβMRPT) calculations on the ground state of manganese dimer is presented. An enormous number of detected intruder states (> 5000) do not permit finding even an approximate shape
Based on a symmetry argument, we study ground states of what we call MMX-chain compounds, which are the new class of halogen-bridged metal complexes. Commensurate density-wave solutions of a relevant multi-band Peierls-Hubbard model are systematically revealed within the Hartree-Fock approximation.