2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/52981The summation of all rainbow diagrams in QED in a strong magnetic field leads to a dynamical electron mass on the light-cone. Further contributions to this summation however can cause problems with light-cone singularities. It is shown that these problems are generally avoided by applying the point-splitting regularization to every diagram. The possibility of implementing this procedure into the Lagrangian of the theory is discussed.5 pagesHigh Energy Physics - Theorytext