Physics – Mathematical Physics
Scientific paper
2009-02-19
Nucl.Phys.B820:620-648,2009
Physics
Mathematical Physics
39 pages, new appendix and references added
Scientific paper
10.1016/j.nuclphysb.2009.04.018
We apply the algebraic Bethe ansatz developed in our previous paper \cite{CM} to three different families of U(1) integrable vertex models with arbitrary $N$ bond states. These statistical mechanics systems are based on the higher spin representations of the quantum group $U_q[SU(2)]$ for both generic and non-generic values of $q$ as well as on the non-compact discrete representation of the $SL(2,{\cal R})$ algebra. We present for all these models the explicit expressions for both the on-shell and the off-shell properties associated to the respective transfer matrices eigenvalue problems. The amplitudes governing the vectors not parallel to the Bethe states are shown to factorize in terms of elementary building blocks functions. The results for the non-compact $SL(2,{\cal R})$ model are argued to be derived from those obtained for the compact systems by taking suitable $N \to \infty$ limits. This permits us to study the properties of the non-compact $SL(2,{\cal R})$ model starting from systems with finite degrees of freedom.
Martins Marcio J.
Melo C. S.
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