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arXiv · hep-ph/9403252

Gauge covariant fermion propagator in quenched, chirally-symmetric quantum electrodynamics

Zhihua Dong·Herman J. Munczek·Craig D. Roberts
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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.

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Zhihua Dong, Herman J. Munczek, Craig D. Roberts. 1994-03-09. Gauge covariant fermion propagator in quenched, chirally-symmetric quantum electrodynamics. https://doi.org/10.1016/0370-2693(94)90180-5

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