Abstract
Diagrammatic theory for Periodic Anderson Model has been developed, supposing the Coulomb repulsion of f — localized electrons as a main parameter of the theory. f-Electrons are strongly correlated and c-conduction electrons are uncorrelated. Correlation function for f- and mass operator for c-electrons are determined. The Dyson equation for c- and Dyson-type equation for f-electrons are formulated for their propagators. The skeleton diagrams are defined for correlation function and thermodynamic functional. The stationary property of renormalized thermodynamic potential with respect to, the variation of the mass operator is established. The result is appropriate both for the normal and for the superconducting states of the system.
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Moskalenko, V.A., Dohotaru, L.A. Diagrammatic theory for periodic anderson model. Phys. Part. Nuclei 41, 1044–1049 (2010). https://doi.org/10.1134/S1063779610070142
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DOI: https://doi.org/10.1134/S1063779610070142