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- W2005449356 abstract "Abstract We discuss the possibility of including interactions between f-shell electrons and localized ligand orbitals in Lanthanide or Actinide compounds besides the f-shell bandelectron hybridization usually contained in the periodic Anderson model. We take into account f-shell-ligand hybridization and direct hopping between f-shells on different lattice sites and show how both can be related by transformations of the Hamiltonian. The Hubbard model may be obtained as a certain limiting case, in which we test the applicability of perturbational methods developed for the Anderson model in the highly correlated regime. This constitutes a rather unusual case, where the perturbation is not a (pseudo-) local mixing term, but the nonlocal kinetic energy. Qualitative agreement with existing results for the Hubbard model is found and limitations of the method are pointed out." @default.
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- W2005449356 date "1988-07-01" @default.
- W2005449356 modified "2023-09-26" @default.
- W2005449356 title "About the inclusion of ligand hybridization and direct hopping into a perturbational approach to strong local correlations" @default.
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- W2005449356 doi "https://doi.org/10.1016/0038-1098(88)90601-1" @default.
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