Spectral regularization and a QED running coupling without a Landau pole

Divergent integrals in quantum field theory (QFT) can be given well defined existence as Lorentz covariant complex measures, which may be analyzed by means of a spectral calculus. The case of the photon self energy is considered and the spectral vacuum polarization function is shown to have very clo...

Full description

Bibliographic Details
Main Author: John Mashford
Format: Article
Language:English
Published: Elsevier 2021-08-01
Series:Nuclear Physics B
Online Access:http://www.sciencedirect.com/science/article/pii/S0550321321001644