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Type: Journal article
Title: Renormalization and chiral symmetry breaking in quenched QED in arbitrary covariant gauges
Author: Hawes, F.
Williams, A.
Roberts, C.
Citation: Physical Review D: Particles, Fields, Gravitation and Cosmology, 1996; 54(8):5361-5372
Publisher: American Physical Society
Issue Date: 1996
ISSN: 0556-2821
Statement of
Frederick T. Hawes, Anthony G. Williams, Craig D. Roberts
Abstract: We extend a previous Landau-gauge study of subtractive renormalization of the fermion propagator Dyson-Schwinger equation in strong-coupling, quenched four-dimensional QED to arbitrary covariant gauges. We use the fermion-photon proper vertex proposed by Curtis and Pennington with an additional correction term included to compensate for the small gauge dependence induced by the ultraviolet regulator. We discuss the chiral limit and the onset of dynamical chiral symmetry breaking in the presence of nonperturbative renormalization. We extract the critical coupling in several different gauges and find evidence of a small residual gauge dependence in this quantity.
Rights: © 1996 American Physical Society
DOI: 10.1103/PhysRevD.54.5361
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