Eight state supersymmetric U model of strongly correlated fermions
Mark D. Gould, Yao-Zhong Zhang, Huan-Qiang Zhou
Abstract
An integrable eight state supersymmtric U model is proposed, which is a fermion model with correlated single-particle and pair hoppings as well as uncorrelated triple-particle hopping. It has an gl(3|1) supersymmetry and contains one symmetry-preserving free parameter. The model is solved and the Bethe ansatz equations are obtained.
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