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Archeological Remarks on Analyticity Properties in Momentum Space in QFT

By Henri Epstein

Appears in collection : Séminaire de Physique Théorique

I will describe the foundations of the program of studying the analyticity properties of the n-point functions in momentum space : the primitive domain of analyticity and methods to enlarge it. If time permits, some of the results for the 4-point function will be described.

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