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t-Matrix calculation of the ground-state energies of solid3He

โœ Scribed by V. Canuto; J. Lodenquai; L. Parish; S. M. Chitre


Publisher
Springer US
Year
1974
Tongue
English
Weight
435 KB
Volume
17
Category
Article
ISSN
0022-2291

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Perturbation calculations of the helium
โœ M.E. Riley; A. Dalgarno ๐Ÿ“‚ Article ๐Ÿ“… 1971 ๐Ÿ› Elsevier Science ๐ŸŒ English โš– 368 KB

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