Our recent open-shell coupled-cluster (CC) theory for incomplete model spaces, having valence holes and valence particles, is cast in an alternative form having computational advantages. An eigenvalue-independent partitioning technique in Fock space converts the CC equations for each m-hole, n-part
โฆ LIBER โฆ
Open-shell coupled-cluster theory for a general incomplete model space using eigenvalue-independent partitioning
โ Scribed by A. Mitra; D. Sinha; U.S. Mahapatra
- Publisher
- Elsevier Science
- Year
- 1996
- Tongue
- English
- Weight
- 398 KB
- Volume
- 261
- Category
- Article
- ISSN
- 0009-2614
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The linked-cluster theorem (LCT) holds good in open-shell coupled-cluster theory Car incomplete model spaces provided the intermediate normalization condition (IN) for the eigenfunctions is abandoned. The crucial requirement for proving the LCT is the valence u~vers~ty of the wave operator 52. Thus