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arXiv:cond-mat/9809056 · Nuclear Physics B

Graded reflection equation algebras and integrable Kondo impurities in the one-dimensional t-J model

Huan-Qiang Zhou, Xiangyu Ge, Jon Links, M. D. Gould

Published May 1, 1999• 34 citations
arXivHTMLPDF
DOI
10.1016/s0550-3213(99)00085-1

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Integrable Kondo impurity in one-dimensional q-deformed t−Jt-Jt−J models
Integrable Kondo impurities in two cases of the one-dimensional q-deformed t−Jt-Jt−J models are studied by means of the boundary Z2{\bf Z}_2Z2​-graded quantum inverse scattering method. The boundary KKK matrices depending on the local magnetic moments of the impurities are presented as nontrivial realizations of the reflection equation algebras in an impurity Hilbert space. Furthermore, these models are solved by using the algebraic Bethe ansatz method and the Bethe ansatz equations are obtained.