On the second reference state and complete eigenstates of the open XXZ chain

  title={On the second reference state and complete eigenstates of the open XXZ chain},
  author={Wen-Li Yang and Yao-zhong Zhang},
The second reference state of the open XXZ spin chain with non-diagonal boundary terms is studied. The associated Bethe states exactly yield the second set of eigenvalues proposed recently by functional Bethe Ansatz. In the quasi-classical limit, two sets of Bethe states give the complete eigenstates of the associated Gaudin model. PACS: 03.65.Fd; 04.20.Jb; 05.30.-d; 75.10.Jm 

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