Integrable supersymmetric correlated electron chain with open boundaries
M. J. Martins, X. W. Guan
Abstract
We construct an extended Hubbard model with open boundaries from a R-matrix based on the Uq[Osp(2|2)] superalgebra. We study the reflection equation and find two classes of diagonal solutions. The corresponding one-dimensional open Hamiltonians are diagonalized by means of the Bethe ansatz approach.
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