Abstract

A counter-example is offered to Eden's proof of the Mandelstam representation in every order of perturbation theory. The proof assumes the absence of anomalous thresholds, the presence of a complex neighborhood on the real axis where the scattering amplitude is analytic with respect to all energy variables, and that a single dispersion relation holds for each energy variable. It is noted that this counter-example offers a serious objection to the Mandelstam representation. (T.F.H.)

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