Gauge covariant fermion propagator in quenched, chirally-symmetric quantum electrodynamics
arXiv:hep-ph/9403252 · doi:10.1016/0370-2693(94)90180-5
Abstract
We discuss the chirally symmetric solution of the massless, quenched, Dyson-Schwinger equation for the fermion propagator in three and four dimensions. The solutions are manifestly gauge covariant. We consider a gauge covariance constraint on the fermion--gauge-boson vertex, which motivates a vertex Ansatz that both satisfies the Ward identity when the fermion self-mass is zero and ensures gauge covariance of the fermion propagator.
11 pages. REVTEX 3.0. ANL-PHY-7711-TH-94