The Kondo Lattice Model in Infinite Dimensions I. Formalism

Details The Kondo Lattice Model in Infinite Dimensions I. Formalism The Kondo Lattice Model in Infinite Dimensions I. Formalism

2008-08-28

arxiv.org/abs/0808.3829v1

J. Phys. Soc. Jpn. 78 (2009) 014702

Physics

Condensed Matter

Strongly Correlated Electrons

13 pages, 10 figures

Scientific paper

10.1143/JPSJ.78.014702

A Green-function formalism for the Kondo lattice model is presented, which is designed to be combined with the dynamical mean-field theory. With use of 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 calculational steps are provided with use of the continuous-time quantum Monte Carlo method.

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