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3-Body Scattering (3BS) theory of on-site correlation in narrow band materials

Franca Manghi·Massimo Rontani
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Abstract

We present the results of a recently developed approach where the interplay between the itinerant and localized character of electrons in narrow band materials is described by adding on-site correlation effects to a first principle band calculation: the single particle band states are treated as mean field solutions of a multi-orbital Hubbard Hamiltonian and the many-body term associated to localized e-e interaction is described in a configuration-interaction scheme. The method allows to calculate hole and electron spectral functions which can be directly compared with spectroscopical results.

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Franca Manghi, Massimo Rontani. 1997-12-15. 3-Body Scattering (3BS) theory of on-site correlation in narrow band materials. https://arxiv.org/abs/cond-mat/9712180

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