期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 74, 期 1, 页码 67-72出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.74.67
关键词
Kondo effect; Bethe ansatz; boundary conformal field theory
We review some exact results on Kondo impurity systems derived from Bethe-ansatz solutions and boundary conformal field theory with particular emphasis on universal aspects of the phenomenon. The finite-size spectra characterizing the low-energy fixed point are computed from the Bethe-ansatz solutions of various models related to the Kondo problem. Using the finite-size scaling argument, we investigate their exact critical properties. We also discuss that a universal relation between the Kondo effect and the impurity effect in one-dimensional quantum systems usefully expedites our understanding of these different phenomena.
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