Geodesic
New diagram technique for the Anderson model
Teoretičeskaâ i matematičeskaâ fizika, Tome 109 (1996) no. 2, pp. 279-294 Cet article a éte moissonné depuis la source Math-Net.Ru

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The generalized Wick theorem for the Anderson model is formulated and, basing on this theorem, the diagram technique for the temperature Green function and the thermodynamic potential is constructed. The main attention is paid to the region of the strong coupling of an impurity atom with metal. As a result of solving the Dyson equations, the impurity Green function is expressed in terms of the mass operator. The contribution to the mass operator and the corrections to the energies of the localized states are obtained in the second order of the perturbation theory. 
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     author = {I. G. Medvedev},
     title = {New diagram technique for the {Anderson} model},
     journal = {Teoreti\v{c}eska\^a i matemati\v{c}eska\^a fizika},
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     url = {http://geodesic.mathdoc.fr/item/TMF_1996_109_2_a8/}
}
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I. G. Medvedev. New diagram technique for the Anderson model. Teoretičeskaâ i matematičeskaâ fizika, Tome 109 (1996) no. 2, pp. 279-294. http://geodesic.mathdoc.fr/item/TMF_1996_109_2_a8/

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