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Exact finite-size spectrum for the multi-channel Kondo model and Kac-Moody fusion rules

Satoshi Fujimoto·Norio Kawakami
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Abstract

The finite-size spectrum for the multi-channel Kondo model is derived analytically from the exact solution, by mapping the nontrivial Z$_{n}$ part of the Kondo scattering into that for the RSOS model coupled with the impurity. The analysis is performed for the case of $n-2S=1$, where $n$ is the number of channel and $S$ is the impurity spin. The result obtained is in accordance with the Kac-Moody fusion hypothesis proposed by Affleck and Ludwig.

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Satoshi Fujimoto, Norio Kawakami. 1995-08-25. Exact finite-size spectrum for the multi-channel Kondo model and Kac-Moody fusion rules. https://doi.org/10.1103/physrevb.52.r13102

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