2 papers
hep-th2025
Analytic Properties of Infrared-Finite Amplitudes in Theories with Long-Range Forces
Luke Lippstreu
Infrared divergences obscure important analytic properties of scattering amplitudes, indicating gaps in our understanding of unitarity, causality, and crossing symmetry in theories…
hep-th2025
A perturbation theory for the Coulomb-phase infrared divergence
Luke Lippstreu
We construct a perturbation theory which we conjecture to be free of the Coulomb-phase infrared divergence. This perturbation theory is developed for one of the simplest yet protot…