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arXiv · hep-th/9305042

The Analytic Structure of Trigonometric S Matrices

Timothy Hollowood
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Abstract

$S$-matrices associated to the vector representations of the quantum groups for the classical Lie algebras are constructed. For the $a_{m-1}$ and $c_m$ algebras the complete $S$-matrix is found by an application of the bootstrap equations. It is shown that the simplest form for the $S$-matrix which generalizes that of the Gross-Neveu model is not consistent for the non-simply-laced algebras due to the existence of unexplained singularities on the physical strip. However, a form which generalizes the $S$-matrix of the principal chiral model is shown to be consistent via an argument which uses a novel application of the Coleman-Thun mechanism. The analysis also gives a correct description of the analytic structure of the $S$-matrix of the principle chiral model for $c_m$.

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Timothy Hollowood. 1993-05-17. The Analytic Structure of Trigonometric S Matrices. https://doi.org/10.1016/0550-3213(94)90435-9

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