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Bethe Ansatz solution for quantum spin-1 chains with boundary terms

E. C. Fireman, A. Lima-Santos, W. Utiel

nlin.SIarXiv:nlin/0110048

Abstract

The procedure for obtaining integrable open spin chain Hamiltonians via reflection matrices is explicitly carried out for some three-state vertex models. We have considered the 19-vertex models of Zamolodchikov-Fateev and Izergin-Korepin, and the Z2-graded 19-vertex models with sl(2|1) and osp(1|2) invariances. In each case the eigenspectrum is determined by application of the coordinate Bethe Ansatz.

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