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.
@article{arxiv.cond-mat/9811048,
title = {Integrable Kondo impurities in the one-dimensional supersymmetric extended Hubbard model},
author = {H. -Q. Zhou and X. -Y. Ge and M. D. Gould},
journal= {arXiv preprint arXiv:cond-mat/9811048},
year = {2009}
}