Interplay between a quantum impurity and a boundary field in the SUSY t-J model

Details Interplay between a quantum impurity and a boundary field in the SUSY t-J model Interplay between a quantum impurity and a boundary field in the SUSY t-J model

2007-03-13

arxiv.org/abs/cond-mat/0703339v2

J. Stat. Mech. (2007) P05006

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, 2 figures. Changes to previous version: 1) Minus signs fixed for the impurity Lax matrix (Eq. 4), the boundary Hamil

Scientific paper

10.1088/1742-5468/2007/05/P05006

We study the role of bound states appearing in different formulations of the Bethe ansatz for the supersymmetric t-J model with a boundary potential and an integrable impurity. For special values of the parameters describing the boundary and the impurity the charge fluctuations at the latter vanish. The population of the bound states selects different sectors of the impurity levels leading to integrable Kondo impurities.

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