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Abstract: Elaborating on the observation that two-particle unitarity-cuts of scatteringamplitudes can be computed by applying Stokes- Theorem, we relate the OpticalTheorem to the Berry Phase, showing how the imaginary part of arbitraryone-loop Feynman amplitudes can be interpreted as the flux of a complex 2-form.



Autor: Pierpaolo Mastrolia

Fuente: https://arxiv.org/



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