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Moments expansions for the correlation energy of an exactly solvable problem

✍ Scribed by Jay D. Mancini; Vassilios Fessatidis; Samuel P. Bowen


Publisher
Elsevier Science
Year
1999
Tongue
English
Weight
54 KB
Volume
259
Category
Article
ISSN
0375-9601

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✦ Synopsis


In this work we study the ground-state properties of the model Hamiltonian


πŸ“œ SIMILAR VOLUMES


Connected moments expansion calculations
✍ J. Cioslowski; M. Kertesz; P.R. Surjan; R.A. Poirier πŸ“‚ Article πŸ“… 1987 πŸ› Elsevier Science 🌐 English βš– 339 KB

The second-order connected moments expansion (CMX( 2)) approach to calculation of the correlation energy is tested numerically on several closed-shell di-and tri-atomic molecules. Benchmark computations performed within 6-31G\*\* basis set reveal that CMX( 2) usually recovers more than SO?+ of the M