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Integrable Kondo impurities in the one-dimensional supersymmetric extended Hubbard model

H. -Q. Zhou, X. -Y. Ge, M. D. Gould

cond-mat.stat-mecharXiv:cond-mat/9811048

Abstract

An integrable Kondo problem in the one-dimensional supersymmetric extended Hubbard model is studied by means of the boundary graded quantum inverse scattering method. The boundary K matrices depending on the local moments of the impurities are presented as a nontrivial realization of the graded reflection equation algebras in a two-dimensional impurity Hilbert space. Further,the model is solved by using the algebraic Bethe ansatz method and the Bethe ansatz equations are obtained.

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