Unitarity-Cuts and Berry’s Phase |
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Authors: | Pierpaolo Mastrolia |
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Institution: | 1.Theory Group, Physics Department,CERN,Geneva 23,Switzerland |
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Abstract: | Elaborating on the observation that two-particle unitarity-cuts of scattering amplitudes can be computed by applying Stokes’
theorem, we relate the optical theorem to the Berry phase, showing how the imaginary part of arbitrary one-loop Feynman amplitudes
can be interpreted as the flux of a complex 2-form. |
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Keywords: | |
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