Integral equations for the dynamics of Anderson's magnetic impurity model |
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| Authors: | H. Keiter Q. Qin |
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| Affiliation: | (1) Department of Physics, University of Florida, 32611 Gainesville, Florida, USA;(2) Present address: Institut für Physik, Universität Dortmund, D-4600 Dortmund 50, Germany |
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| Abstract: | Integral equations for the Anderson model at finiteU and arbitrary degeneracyN are set up, which may be viewed as a generalization of the non-crossing approximation in the infiniteU case. In the Kondo (or heavy fermion) limit an analytic treatment is possible near the threshold, where the system is difficult to analyze numerically. Threshold exponents follow from a quartic equation. |
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