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

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

1998-09-03

arxiv.org/abs/cond-mat/9809056v1

Physics

Condensed Matter

Statistical Mechanics

14 pages, RevTex

Scientific paper

10.1016/S0550-3213(99)00085-1

Integrable Kondo impurities in two cases of the one-dimensional $t-J$ model are studied by means of the boundary ${\bf Z}_2$-graded quantum inverse scattering method. The boundary $K$ 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.

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