Zero Mode Effect Generalization for the Electromagnetic Current in the Light Front

Abstract

We consider in this work the electromagnetic current for a system composed by two charged bosons and show that it has a structure of many bodies even in the impulse approximation, when described in the light front time $x^{+}$. In terms of the two-body component for the bound state, the current contains two-body operators. We discuss the process of pair creation from the interacting photon and interpret it as a zero mode contribution to the current and its consequences for the components of currents in the light-front.

13 pages, 3 figures. arXiv admin note: substantial text overlap with arXiv:hep-th/0509116

References in corpus (3)

• Light-Front Bethe-Salpeter Equation
• Covariance of Light-Front Models: Pair Current
• Why pair production cures covariance in the light-front?

Cited by in corpus (3)

• Radiative transitions between $0^{-+}$ and $1^{--}$ heavy quarkonia on the light front
• Frame dependence of transition form factors in light-front dynamics
• Covariant analysis of electromagnetic current on the light cone: exposition with scalar Yukawa theory