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Integrability of the Heisenberg Chains with Boundary Impurities and Their Bethe Ansatz

Boyu Hou, Kangjie Shi, Ruihong Yue, Shaoyou Zhao

cond-matarXiv:cond-mat/9910384

Abstract

In this paper, we show the integrability of spin-1/2 XXZ Heisenberg chain with two arbitrary spin boundary Impurities. By using the fusion method, we generalize it to the spin-1 XXZ chain. Then the eigenvalues of Hamiltonians of these models are obtained by the means of Bethe ansatz method.

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