Abstract
The limit of zero bandwidth in a model for an intermediate valent impurity is studied in direct diagrammatic perturbation technique in terms of the hybridization. The class of diagrams, from which this limit is obtained, is resummed. Furthermore, a Brillouin-Wigner-type expansion is set up.
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Keiter, H., Kimball, J.C.: Int. J. Magn.1, 233 (1971)
Grewe, N., Keiter, H.: Phys. Rev.B24, 4420 (1981)
Czycholl, G., Keiter, H., Niebur, E.: In: Proceedings of the International Conference on Valence Instabilities, Zürich 1982, Wachter, P. (ed.). Amsterdam: North-Holland Publ. Company (to appear)
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Keiter, H. On the zero-bandwidth limit in diagrammatic perturbation technique for a model of an intermediate valent impurity. Z. Physik B - Condensed Matter 49, 209–212 (1982). https://doi.org/10.1007/BF01313028
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DOI: https://doi.org/10.1007/BF01313028