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The rigorous analyticity-unitarity program and its successes

André Martin

hep-pharXiv:hep-ph/9906393

Abstract

We show how the combination of analyticity properties derived from local field theory and the unitarity condition (in particular positivity) leads to non-trivial physical results, including the proof of the "Froissart bound" from first principles and the existence of absolute bounds on the pion-pion scattering amplitude.

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