Exact solution of the extended Falicov-Kimball model in the limit of zero conduction band width
Canio Noce, Alfonso Romano
A method for solving exactly the Falicov-Kimball model in the limit of vanishing conduction band is proposed. By means of the path integral formalism, a general procedure for the evaluation of the exact n-point Green functions at a finite temperature is developed. The results obtained here represent a starting point for a perturbation expansion in the conduction electron band width.
Journal of Physics Condensed Matter•Nov 6, 1989•8 citations