Exactly integrable family of generalized Hubbard models with twisted Yangian symmetry

Details Exactly integrable family of generalized Hubbard models with twisted Yangian symmetry Exactly integrable family of generalized Hubbard models with twisted Yangian symmetry

1997-10-03

arxiv.org/abs/cond-mat/9710033v3

Physics

Condensed Matter

Latex, 10 pages, no figure, revised version to be published in Physics Letters A

Scientific paper

10.1016/S0375-9601(98)00717-8

A strongly correlated electron system with controlled hopping, in the line of the recently proposed generalized Hubbard models as candidates for high T_c-superconductors, is considered. The model along with a whole class of such systems are shown to be completely integrable with explicit quantum R-matrices and the Lax operators. Inspite of novelties in the Bethe ansatz solution, the final results do not deviate much from those of the standard Hubbard model. However, the symmetry of the model is changed to a recently discovered twisted Yangian symmetry.

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