Eigenvalues of model Hamiltonian matrice
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Jacek Karwowski; Dorota Bielรญnska-Waลผ; Jacek Jurkowski
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Article
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1996
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John Wiley and Sons
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English
โ 564 KB
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 pre