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Mott transition in an exactly solvable KSSH model

Journal Article · · International Journal of Modern Physics B; (United States)
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  1. Dipt. di Fisica, Politecnico di Torino, 10129 Torino (IT)
In this paper the solution of the K.S.S.H.-like model shown to be exactly solvable in any number of dimensions, for a particular choice of the coupling constant describing the hopping process amplitude, both for finite size and in the thermodynamic limit, is discussed in detail. The analysis of the zero-temperature phase space in d = 2 shows that the model exhibits a transition in the number of doubly occupied sites order parameter, which at half-filling coincides with the Mott transition found for the Hubbard model in the Guntzwiller approximation.
OSTI ID:
5223787
Journal Information:
International Journal of Modern Physics B; (United States), Journal Name: International Journal of Modern Physics B; (United States) Vol. 5:6; ISSN 0217-9792; ISSN IJPBE
Country of Publication:
United States
Language:
English