We have exploited a self consistent many body theory to calculate the quasi-particle spectrum of the Hubbard model, in the limit of strong intraatomic interaction. The quasi-particle energy of each band of the spectrum, consisting of two bands, is calculated exactly up to terms linear in the hopping-integral.

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QP-PQ, quantum probability and white noise analysis

Phonion Limits and Macroscopic quasi-particle spectrum for the BCS-model

M. Broidioi, B. Momont, André F. Verbeure, K. U. Leuven

Published Sep 1, 1993• 0 citations

Publisher

DOI: 10.1142/9789812812810_0026

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