Integrable Kondo impurities in one-dimensional extended Hubbard models
Huan-Qiang Zhou, Xiangyu Ge, Jon Links +1 more
Three kinds of integrable Kondo problems in one-dimensional extended Hubbard models are 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 acting in a ${(2s}_{\ensuremath{\alpha}}+1)$-dimensional impurity Hilbert space. Furthermore, these models are solved using the algebraic Bethe ansatz method, and the Bethe ansatz equations are obtained.
arXiv:cond-mat/9908036•Physical review. B, Condensed matter•Aug 1, 2000•5 citations