✦ LIBER ✦

Eigenvalues of model Hamiltonian matrices from spectral density distribution moments: The Heisenberg spin Hamiltonian

✍ Scribed by Jacek Karwowski; Dorota Bielínska-Waż; Jacek Jurkowski

Publisher: John Wiley and Sons
Year: 1996
Tongue: English
Weight: 564 KB
Volume: 60
Category: Article
ISSN: 0020-7608
DOI: 10.1002/(sici)1097-461x(1996)60:1<185::aid-qua20>3.0.co;2-d

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✦ Synopsis

An approach aimed at approximating the extreme (the lowest and/or the highest) eigenvalues of matrices representing many-electron model Hamiltonians from a knowledge of several spectral density distribution moments is proposed. A detailed discussion of the Heisenberg spin Hamiltonian spectrum is presented as an example of an application.