Gauge invariant reduction to the light-front

Abstract

The problem of constructing gauge invariant currents in terms of light-cone bound-state wave functions is solved by utilising the gauging of equations method. In particular, it is shown how to construct perturbative expansions of the electromagnetic current in the light-cone formalism, such that current conservation is satisfied at each order of the perturbation theory.

12 pages, revtex4

References in corpus (3)

• Light Front Cloudy Bag Model: Nucleon Electromagnetic Form Factors
• Current in the light-front Bethe-Salpeter formalism II: Applications
• Current in the light-front Bethe-Salpeter formalism I: Replacement of non-wave function vertices

Cited by in corpus (6)

• Higher Fock State Contributions to the Generalized Parton Distribution of Pion
• Projecting the Bethe-Salpeter Equation onto the Light-Front and back: A Short Review
• Light-front Ward-Takahashi Identity for Two-Fermion Systems
• Gauge invariance in the presence of a cutoff
• Gauge invariant formulation of 3$\gamma$ decay of particle-antiparticle bound states
• Light-Front Dynamics and Generalized Parton Distributions