Poor man’s scaling and lie Algebras

Eugene Kogan

Research output: Contribution to journalArticlepeer-review

4 Scopus citations

Abstract

We consider a general model, describing a quantum impurity with degenerate energy levels, interacting with a gas of itinerant electrons, derive general scaling equation for the model, and analyse the connection between its particular forms and the symmetry of interaction. On the basis of this analysis we write down scaling equations for the Hamiltonians which are the direct products of su(3) Lie algebras and have either SU(2)×U(1) or SU(2) symmetry. We also put into a new context anisotropic Coqblin—Schrieffer models proposed by us earlier.

Original languageEnglish
Article number125001
JournalJournal of Physics Communications
Volume3
Issue number12
DOIs
StatePublished - 2019

Bibliographical note

Publisher Copyright:
© 2019 The Author(s). Published by IOP Publishing Ltd.

Keywords

  • Kondo effect
  • Lie algebras
  • Renormalization
  • Scaling

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