Exact s-Matrices for the Nonsimply-Laced Affine Toda Theories $a_{2n-1}^{(2)}$

D. Zanon; G.W. Delius; M.T. Grisaru

Exact s-Matrices for the Nonsimply-Laced Affine Toda Theories $a_{2n-1}^{(2)}$

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arxiv hep-th/9112007 v1 pith:ZCSJIYP7 submitted 1991-12-04 hep-th

G.W. Delius , M.T. Grisaru , D. Zanon This is my paper · ORCID

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keywords theoriesaffineexactnonsimply-lacedtodaaccountanomalousassumptions

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abstract

We derive the exact, factorized, purely elastic scattering matrices for the $a_{2n-1}^{(2)}$ family of nonsimply-laced affine Toda theories. The derivation takes into account the distortion of the classical mass spectrum by radiative correction, as well as modifications of the usual bootstrap assumptions since for these theories anomalous threshold singularities lead to a displacement of some single particle poles.

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Tree-level elastic 2d theories with polynomial interactions remain elastic at one loop once masses are renormalized by bubble diagrams, with a universal one-loop S-matrix in terms of tree-level data.

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