Perturbative renormalization of multi-channel Kondo-type models

Y. Kuramoto

Research output: Contribution to journalArticlepeer-review

17 Citations (Scopus)


The poor man's scaling is extended to higher order by the use of the open-shell Rayleigh-Schrödinger perturbation theory. A generalized Kondo-type model with the SU(n) × SU(m) symmetry is proposed and renormalized to the third order. It is shown that the model has both local Fermi-liquid and non-Fermi-liquid fixed points, and that the latter becomes unstable in the special case of n = m = 2. Possible relevance of the model to the newly found phase IV in CexLa1-xB6 is discussed.

Original languageEnglish
Pages (from-to)457-464
Number of pages8
JournalEuropean Physical Journal B
Issue number3
Publication statusPublished - 1998
Externally publishedYes


  • 05.30.-d quantum statistical mechanics
  • 05.70.Jk Critical point phenomena

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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