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Exact Results for a Kondo Problem in One Dimensional t-J Model | Yupeng Wang
; Jianhui Dai
; Zhanning Hu
; Fu-Cho Pu
; | Date: |
11 Jun 1997 | Subject: | Strongly Correlated Electrons | cond-mat.str-el | Abstract: | We propose an integrable Kondo problem in a one-dimensional (1D) $t-J$ model. With the open boundary condition of the wave functions at the impurity sites, the model can be exactly solved via Bethe ansatz for a class of $J_{R,L}$ (Kondo coupling constants) and $V_{L,R}$ (impurity potentials) parametrized by a single parameter $c$. The integrable value of $J_{L,R}$ runs from negative infinity to positive infinity, which allows us to study both the ferromagnetic Kondo problem and antiferromagnetic Kondo problem in a strongly correlated electron system. Generally, there is a residual entropy for the ground state, which indicates a typical non-Fermi liquid behavior. | Source: | arXiv, cond-mat/9706086 | Services: | Forum | Review | PDF | Favorites |
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