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Low temperature states in the Falicov-Kimball model. (English) Zbl 0856.60106

Summary: The ground states and low temperature states of the Falicov-Kimball model are studied in the plane of chemical potentials of the two types of particles involved, for large values of the coupling constant, near the half-filled band. For this study, a cluster expansion is introduced which can be used to investigate the effective interaction energy between the static particles.

MSC:

82B20 Lattice systems (Ising, dimer, Potts, etc.) and systems on graphs arising in equilibrium statistical mechanics
82B26 Phase transitions (general) in equilibrium statistical mechanics
60K40 Other physical applications of random processes
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