Fermion self-energy correction in light-front QED using coherent state basis

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Abstract

We discuss infrared (IR) divergences in lepton mass renormalization in light-front quantum electrodynamics in Feynman gauge. We consider light-front quantum electrodynamics with Pauli-Villars fields and using old-fashioned time-ordered perturbation theory, we show that our earlier result regarding cancellation of true IR divergences up to $O({e}^{4})$ in coherent state basis holds in Feynman gauge also.

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