Integrable Kondo impurities in one-dimensional extended Hubbard models

Details Integrable Kondo impurities in one-dimensional extended Hubbard models Integrable Kondo impurities in one-dimensional extended Hubbard models

1999-08-03

arxiv.org/abs/cond-mat/9908036v1

Physics

Condensed Matter

Strongly Correlated Electrons

19 pages, RevTex

Scientific paper

10.1103/PhysRevB.62.4906

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 $(2 s_\alpha+1)$-dimensional impurity Hilbert space. Further, these models are solved using the algebraic Bethe ansatz method and the Bethe ansatz equations are obtained.

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