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

Abstract

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.

Latex file, 12 pages; New version appears in JHEP

References in corpus (3)

• Q-operator and T-Q relation from the fusion hierarchy
• Magic in the spectra of the XXZ quantum chain with boundaries at Delta=0 and Delta=-1/2
• Exact solution of the XXZ Gaudin model with generic open boundaries

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