Extended integrability regime for the supersymmetric U model

Details Extended integrability regime for the supersymmetric U model Extended integrability regime for the supersymmetric U model

1999-03-18

arxiv.org/abs/cond-mat/9903274v2

J. Phys. A: Math. Gen., 32 (1999) L315

Physics

Condensed Matter

Strongly Correlated Electrons

7 pages. LaTeX, no figures, minor typos corrected

Scientific paper

10.1088/0305-4470/32/27/104

An extension of the supersymmetric U model for correlated elctrons is given and integrability is established by demonstrating that the model can be constructed through the Quantum Inverse Scattering Method using an R-matrix without the difference property. Some general symmetry properties of the model are discussed and from the Bethe ansatz solution an expression for the energies is presented.

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