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 language | English |
|---|---|
| Article number | 014702 |
| Journal | journal of the physical society of japan |
| Volume | 78 |
| Issue number | 1 |
| DOIs | |
| Publication status | Published - 2009 Jan |
| Externally published | Yes |
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)