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

Moca, C. P. and Alex, A. and Delft, J. von and Zaránd, Gergely Attila (2012) SU(3) Anderson impurity model: A numerical renormalization group approach exploiting non-Abelian symmetries. PHYSICAL REVIEW B CONDENSED MATTER AND MATERIALS PHYSICS, 86 (19). Paper-195128. ISSN 1098-0121

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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.

Item Type: Article
Subjects: Q Science / természettudomány > QC Physics / fizika
SWORD Depositor: MTMT SWORD
Depositing User: MTMT SWORD
Date Deposited: 21 Mar 2014 13:21
Last Modified: 21 Mar 2014 21:47
URI: http://real.mtak.hu/id/eprint/11044

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