Abstract
This paper presents an extension of the self-consistent perturbation theory for the Anderson model to periodic valence-fluctuation systems. The extended scheme takes the reciprocal of the number of effective neighbors as a proper expansion parameter for intersite interactions. Self-consistent account is taken of the Kondo effect, the intersite exchange interaction and the intersite coherence. Simple illustration is given how the heavy-fermion behavior emerges in the present framework.
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Kuramoto, Y. (1985). Self-Consistent Perturbation Theory for Valence-Fluctuating Lattice Systems. In: Kasuya, T., Saso, T. (eds) Theory of Heavy Fermions and Valence Fluctuations. Springer Series in Solid-State Sciences, vol 62. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-82618-4_11
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DOI: https://doi.org/10.1007/978-3-642-82618-4_11
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