SU(3) Anderson impurity model: A numerical renormalization group approach exploiting non-Abelian symmetries

Cǎtǎlin Paşcu Moca, Arne Alex, Jan Von Delft, Gergely Zaránd

Research output: Article

13 Citations (Scopus)

Abstract

We show how the density-matrix numerical renormalization group method can be used in combination with non-Abelian symmetries such as SU(N). The decomposition of the direct product of two irreducible representations requires the use of a so-called outer multiplicity label. We apply this scheme to the SU(3) symmetrical Anderson model, for which we analyze the finite size spectrum, determine local fermionic, spin, superconducting, and trion spectral functions, and also compute the temperature dependence of the conductance. Our calculations reveal a rich Fermi liquid structure.

Original languageEnglish
Article number195128
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume86
Issue number19
DOIs
Publication statusPublished - nov. 19 2012

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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