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arXiv · 0906.3789

Unitarity-Cuts and Berry's Phase

Pierpaolo Mastrolia
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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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Pierpaolo Mastrolia. 2009-06-22. Unitarity-Cuts and Berry's Phase. https://doi.org/10.1007/s11005-010-0370-z

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