The Phase of the Scattering Matrix
arXiv:hep-th/0003141 · doi:10.1016/S0370-2693(00)00473-1
Abstract
Vacuum polarization in external fields is treated by way of calculating - exactly and then perturbatively - the phase of the quantum scattering matrix in the Shale-Stinespring approach to field theory. The link between the Shale-Stinespring method and the Epstein-Glaser renormalization procedure is highlighted.
13 pages, PlainTeX