The Kondo lattice model in infinite dimensions: I. Formalism

Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto

Research output: Contribution to journalArticle

25 Citations (Scopus)

Abstract

A Green-function formalism for the Kondo lattice model is presented, which is designed to be combined with dynamical mean-field theory. Using Wick's theorem only for conduction electrons, dynamical quantities are represented in terms of the t-matrix and its two-particle generalizations. By taking the high-frequency limit of the t-matrix with respect to a part of the fermion frequencies, one obtains dynamical correlation functions of localized moments. Explicit examples of calculation steps are provided using the continuous-time quantum Monte Carlo method.

Original languageEnglish
Article number014702
Journaljournal of the physical society of japan
Volume78
Issue number1
DOIs
Publication statusPublished - Jan 1 2009
Externally publishedYes

Keywords

  • Anderson lattice model
  • Continuous-time quantum Monte Carlo method (CT-QMC)
  • Coqblin-Schrieffer lattice model
  • Dynamical mean-field theory (DMFT)
  • Equation of motion
  • Generalized t-matrix
  • Kondo lattice model
  • Two-particle Green function

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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