Couplings in Affine Toda Field Theories

Fring, A. (1992). Couplings in Affine Toda Field Theories. Unpublished,

Abstract

We present a systematic derivation for a general formula for the n-point coupling constant valid for affine Toda theories related to any simple Lie algebra g. All n-point couplings with n ≥ 4 are completely determined in terms of the masses and the three-point couplings. A general fusing rule, formulated in the root space of the Lie algebra, is derived for all n-point couplings.