Ground-state of the single impurity Anderson model with correlated conduction electrons

Utilizing the nonperturbative Lanczos procedure, we study the ground-state spectrum of the Single-Impurity Anderson Model. An additional term is added to the Hamiltonian which represents a Coulomb-repulsion between the conduction electrons. The ground-state energy as well as the singlet-triplet ener...

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Bibliographic Details
Published in:Physics letters. A 2002-10, Vol.303 (1), p.97-103
Main Authors: Fessatidis, Vassilios, Mancini, Jay D., Massano, William J., Bowen, Samuel P.
Format: Article
Language:English
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Summary:Utilizing the nonperturbative Lanczos procedure, we study the ground-state spectrum of the Single-Impurity Anderson Model. An additional term is added to the Hamiltonian which represents a Coulomb-repulsion between the conduction electrons. The ground-state energy as well as the singlet-triplet energy is calculated in this strongly interacting system. Our results are consistent with those of Fermi-liquid theory which predicts a renormalization of the low energy properties of the system upon introduction of local, repulsive conduction electron interactions.
ISSN:0375-9601
1873-2429
DOI:10.1016/S0375-9601(02)01147-7