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Numerical renormalization group study of two-level Kondo effect: Discovery of new fixed point

M. Kojima·S. Yotsuhashi·K. Miyake
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Abstract

The model of two-level Kondo effect is studied by the Wilson numerical renormalization group method. It is shown that there exist a new type of weak-coupling fixed point other than the strong-coupling fixed point found by Vladar and Zawadowski two decades ago by means of the one-loop and two-loop renormalization group methods.

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M. Kojima, S. Yotsuhashi, K. Miyake. 2003-03-17. Numerical renormalization group study of two-level Kondo effect: Discovery of new fixed point. https://arxiv.org/abs/cond-mat/0303299

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