Decoupling method for dynamical mean-field theory calculations

Harald O. Jeschke, Gabriel Kotliar

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


In this paper we explore the use of an equation of motion decoupling method as an impurity solver to be used in conjunction with the dynamical mean field self-consistency condition for the solution of lattice models. We benchmark the impurity solver against exact diagonalization, and apply the method to study the infinite U Hubbard model, the periodic Anderson model and the pd model. This simple and numerically efficient approach yields the spectra expected for strongly correlated materials, with a quasiparticle peak and a Hubbard band. It works in a large range of parameters, and therefore can be used for the exploration of real materials using the local density approximation and dynamical mean field theory.

Original languageEnglish
Article number085103
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number8
Publication statusPublished - Feb 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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