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

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

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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
Issue number19
Publication statusPublished - Nov 19 2012


ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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