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A new hierarchy of upper and lower bounds on expectation values

✍ Scribed by U. Brandt; J. Stolze


Book ID
112508646
Publisher
Springer
Year
1981
Tongue
English
Weight
540 KB
Volume
43
Category
Article
ISSN
1434-6036

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πŸ“œ SIMILAR VOLUMES


Upper and lower bounds to critical value
✍ R. Behling; A. Bongers; T. KΓΌpper πŸ“‚ Article πŸ“… 1976 πŸ› John Wiley and Sons 🌐 English βš– 393 KB

## Abstract Upper and lower bounds for the minimal critical energy __E__ of the Hartree operator for helium are calculated. We show that a Ritz analogous procedure for the calculation of the upper bounds converges to the exact value. The lower bound to __E__ yields that the ground state __E__~H~ of