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This article is cited in 7 scientific papers (total in 7 papers)
A diagram approach to the strong coupling in the single-impurity
Anderson model
V. A. Moskalenkoab, P. Entelc, D. F. Digorb, L. A. Dohotarud, R. Citroe a Joint Institute for Nuclear Research
b Institute of Applied Physics Academy of Sciences of Moldova
c University of Duisburg-Essen
d Technical University of Moldova
e Dipartimento di Fisica "E. R. Caianiello", Università degli Studi di Salerno
Abstract:
We propose a diagram theory around the atomic limit for
the single-impurity Anderson model in which the strongly correlated
impurity electrons hybridize with free (uncorrelated)
conduction electrons. Using this diagram approach, we prove
a linked-cluster theorem for the vacuum diagrams and derive Dyson-type
equations for localized and conduction electrons and
the corresponding equations for mixed propagators. The system of
equations can be closed by summing an infinite series of ladder
diagrams containing irreducible Green's functions. The result allows
discussing resonances associated with quantum transitions at the impurity site.
Keywords:
strong correlation, spectral function, Dyson equation, Green's function, Anderson impurity model.
Received: 20.06.2007
Citation:
V. A. Moskalenko, P. Entel, D. F. Digor, L. A. Dohotaru, R. Citro, “A diagram approach to the strong coupling in the single-impurity
Anderson model”, TMF, 155:3 (2008), 474–497; Theoret. and Math. Phys., 155:3 (2008), 914–935
Linking options:
https://www.mathnet.ru/eng/tmf6224https://doi.org/10.4213/tmf6224 https://www.mathnet.ru/eng/tmf/v155/i3/p474
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Abstract page: | 523 | Full-text PDF : | 194 | References: | 58 | First page: | 5 |
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