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Variational procedure yielding upper and lower bounds to eigenvalues of hermitian operators

✍ Scribed by A.M.K. Müller

Publisher: Elsevier Science
Year: 1978
Tongue: English
Weight: 212 KB
Volume: 65
Category: Article
ISSN: 0375-9601
DOI: 10.1016/0375-9601(78)90701-6

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📜 SIMILAR VOLUMES

Variance minimization. A variational pri

Variance minimization. A variational principle for accurate lower and upper bounds of the eigenvalues of a selfadjoint operator, bounded below

✍ Heinz Kleindienst; Wolfgang Müller 📂 Article 📅 1980 🏛 Springer 🌐 English ⚖ 277 KB

Upper and lower bounds to critical value

Upper and lower bounds to critical values of the Hartree operator

✍ R. Behling; A. Bongers; T. Küpper 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 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