Počet záznamů: 1

Multiorbital simplified parquet equations for strongly correlated electrons

  1. 1.
    0361328 - FZU-D 2012 RIV US eng J - Článek v odborném periodiku
    Augustinský, Pavel - Janiš, Václav
    Multiorbital simplified parquet equations for strongly correlated electrons.
    Physical Review. B. Roč. 83, č. 3 (2011), "035114-1"-"035114-13" ISSN 1098-0121
    Grant CEP: GA ČR(CZ) GC202/07/J047
    Výzkumný záměr: CEZ:AV0Z10100520
    Klíčová slova: multi-orbital model * strongly correlated electrons * parquet equations * Kondo regime
    Kód oboru RIV: BE - Teoretická fyzika
    Impakt faktor: 3.691, rok: 2011
    http://prb.aps.org/abstract/PRB/v83/i3/e035114

    We extend an approximation that we developed earlier for the single-impurity Anderson model to a full-size impurity solver for models of interacting electrons with multiple orbitals. The approximation is based on parquet equations simplified by separating small and large energy fluctuations justified in the critical region of a pole in the two-particle vertex. We explicitly calculate properties of a paramagnetic solution of a two-orbital Hubbard model with a Hund exchange and orbital splitting within the dynamical mean-field approximation.
    Trvalý link: http://hdl.handle.net/11104/0198666