Unitarity-Cuts, Stokes' Theorem and Berry's Phase
High Energy Physics - Phenomenology
2010-01-20 v1
Abstract
Two-particle unitarity-cuts of scattering amplitudes can be efficiently computed by applying Stokes' Theorem, in the fashion of the Generalised Cauchy Theorem. Consequently, the Optical Theorem can be related 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.
Cite
@article{arxiv.1001.3156,
title = {Unitarity-Cuts, Stokes' Theorem and Berry's Phase},
author = {Pierpaolo Mastrolia},
journal= {arXiv preprint arXiv:1001.3156},
year = {2010}
}
Comments
presented at RADCOR 2009 - 9th International Symposium on Radiative Corrections, October 25 - 30 2009, Ascona, Switzerland