VTechWorks is currently undergoing indexing. There may be some unusual behavior with item visibility on February 24, 2018, until the index is complete.
Please contact email@example.com if there are continuing difficulties.
The role of coulomb interactions in valence transition: Falicov_Kimball model
A nonperturbative method of Green function calculation is applied to the Falicov_Kimball model Hamiltonian. In an approximation to first order in the hopping matrix elements, self_consistent solutions for several thermal averages and correlation functions do not show abrupt phase changes as a function of temperature. This treatment suggests that the Coulomb correlation by itself is not the key ingredient to understanding valence transitions.