Decoupling method for dynamical mean-field theory calculations

Harald Olaf Jeschke, Gabriel Kotliar

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

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
Volume71
Issue number8
DOIs
Publication statusPublished - Feb 1 2005
Externally publishedYes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Fingerprint Dive into the research topics of 'Decoupling method for dynamical mean-field theory calculations'. Together they form a unique fingerprint.

  • Cite this