Duality in the Kondo model and perturbative approach to strong coupling theory
Tomosuke Aono
Abstract
We investigate the duality in the Kondo model. Starting from the s-d model with the coupling constant J, the strong coupling model with the constant of 1/J is identified. The model shows the unitary limit of the conductance, G=2 e2/h at zero temperature. The perturbation theory of the model gives qualitative agreement with the results of numerical renormalization group and Bethe ansatz near T=TK.
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