Nonlinear Sciences – Exactly Solvable and Integrable Systems
Scientific paper
2001-10-31
Nucl.Phys. B626 (2002) 435-462
Nonlinear Sciences
Exactly Solvable and Integrable Systems
24 pages, LaTex, some misprints removed
Scientific paper
10.1016/S0550-3213(02)00027-5
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 $Z_{2}$-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.
Fireman E. C.
Lima-Santos Antonio
Utiel Wagner
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