Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1997-06-09
Nucl.Phys. B504 (1997) 738-752
Physics
High Energy Physics
High Energy Physics - Theory
16 pages, latex, no figures
Scientific paper
The Lie algebraic structures of the S-matrices for the affine Toda field theories based on the dual pairs (X_N^{(1)}, Y_M^{(l)}) are discussed. For the non-simply-laced horizontal subalgebra X_N and the simply-laced horizontal subalgebra Y_M, we introduce a ``q-deformation'' of a Coxeter element and a ``p-deformation'' of a twisted Coxeter element respectively. Using these deformed objects, expressions for the generating function of the multiplicities of the building block of the S-matrices are obtained. The relation between the deformed version of Dorey's rule and generalized Dorey's rule due to Chari and Pressley are discussed.
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