Exactly solvable one-dimensional model of strongly correlated fermions with pair hopping
Institut für Theoretische Physik,
Universität zu Köln, Zülpicher Str. 77,
D-50937 Köln, Germany
Accepted: 15 July 1997
A new one-dimensional model of strongly correlated fermions on N sublattices with density-density interaction and pair hopping between sublattices is formulated and solved exactly by the Bethe ansatz method. The density-density and pair correlation functions are calculated which manifest superconducting properties for .
PACS: 75.10.Lp – Band and itinerant models / 74.20.-z – Theories and models of superconducting state / 71.28.+d – Narrow-band systems; intermediate-valence solids
© EDP Sciences, 1997