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.
|Journal||Physical Review B - Condensed Matter and Materials Physics|
|Publication status||Published - Nov 19 2012|
ASJC Scopus subject areas
- Electronic, Optical and Magnetic Materials
- Condensed Matter Physics