A minimax principle for the eigenvalues in spectral gaps

Griesemer, Marcel and Siedentop, Heinz (1999) A minimax principle for the eigenvalues in spectral gaps. JOURNAL OF THE LONDON MATHEMATICAL SOCIETY-SECOND SERIES, 60. pp. 490-500. ISSN 0024-6107, 1469-7750

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Abstract

A minimax principle is derived for the eigenvalues in the spectral gap of a possibly non-semibounded selfadjoint operator. It allows the nth eigenvalue of the Dirac operator with Coulomb potential from below to be bound by the nth eigenvalue of a semibounded Hamiltonian which is of interest in the context of stability of matter. As a second application it is shown that the Dirac operator with suitable non-positive potential has at least as many discrete eigenvalues as the Schrodinger operator with the same potential.

Item Type: Article
Uncontrolled Keywords: ELECTRON ATOMS; DIRAC-EQUATION; STABILITY; ENERGIES; FIELDS;
Subjects: 500 Science > 510 Mathematics
Divisions: Mathematics
Depositing User: Dr. Gernot Deinzer
Date Deposited: 20 Dec 2022 15:30
Last Modified: 20 Dec 2022 15:30
URI: https://pred.uni-regensburg.de/id/eprint/48963

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