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Exact Finite-Size Spectra in the Kondo Problem and Boundary Conformal Field Theory

S. Fujimoto·N. Kawakami·S. -K. Yang
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Abstract

The exact finite-size spectra for several quantum impurity models related to the Kondo problem are obtained from the Bethe ansatz solutions. Using the finite-size scaling in boundary conformal field theory, we determine various surface critical exponents from the exact spectrum, which accord with those obtained by Affleck and Ludwig with Kac-Moody fusion rules. Some applications to critical phenomena observed in connection with the orthogonality catastrophe are also discussed.

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S. Fujimoto, N. Kawakami, S. -K. Yang. 1995-12-08. Exact Finite-Size Spectra in the Kondo Problem and Boundary Conformal Field Theory. https://arxiv.org/abs/cond-mat/9512059

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