The use of projection operators in the configuration interaction problem
β Scribed by R.K Nesbet
- Publisher
- Elsevier Science
- Year
- 1958
- Tongue
- English
- Weight
- 624 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0003-4916
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π SIMILAR VOLUMES
We introduce a procedure for the CI description of energy surfaces based on an extension of the concept of a partiaUy tilled Cl matrix (called nearly empty matrix (NEM)) and the unique selected configuration list (USCL). An NEM-USCL compared to a full matrh calculatzon (ratio of calculated CI matrix
Single-electron excitations of the atomic f shell are usually taken into account in analyses of lanthanide and actinide spectra by including six three-electron scalar operators t i in the Hamiltonian. Their matrix elements have been factorized for all f N by using the Wigner-Eckart theorem applied t
## Abstract The commonly used transmissionβline modelling (TLM) network of oneβdimensional diffusion problems often results in unwanted oscillations. Two different TLM configurations (line boundary (LB) and resistance boundary (RB)), are investigated with some techniques necessary to reduce the osc