The Kondo lattice model in infinite dimensions: I. Formalism

Junya Otsuki, Hiroaki Kusunose, Yoshio Kuramoto

Research output: Contribution to journalArticle

24 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

Fingerprint

formalism
wicks
matrices
conduction electrons
Monte Carlo method
Green's functions
theorems
fermions
moments

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)

Cite this

The Kondo lattice model in infinite dimensions : I. Formalism. / Otsuki, Junya; Kusunose, Hiroaki; Kuramoto, Yoshio.

In: Journal of the Physical Society of Japan, Vol. 78, No. 1, 014702, 01.01.2009.

Research output: Contribution to journalArticle

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