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Integrable Kondo impurities in one-dimensional extended Hubbard models

Huan-Qiang Zhou·Xiang-Yu Ge·Jon Links·Mark D. Gould
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Abstract

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 $(2 s_α+1)$-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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Huan-Qiang Zhou, Xiang-Yu Ge, Jon Links, Mark D. Gould. 1999-08-03. Integrable Kondo impurities in one-dimensional extended Hubbard models. https://doi.org/10.1103/physrevb.62.4906

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