Light-Front Momentum Integrals for Fermion Loops in the Massive Schwinger Model

摘要

A novel consistent treatment of the light-front momentum integrals is proposed. The actual calculations are performed for the closed fermion loops in (1 + 1) dimensions, including Furry's theorem. The regularization of Pauli-Villars is employed for the tadpole and two-leg diagrams. The problems with the light-front effective potentials are consistently solved.