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arxiv: hep-ph/9407350 · v2 · submitted 1994-07-21 · ✦ hep-ph

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Gauge independent Chiral Symmetry Breaking in Quenched QED

A.Bashir , M.R.Pennington
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classification ✦ hep-ph
keywords couplingcriticalgaugegenerationindependentmassquenchedvertex
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In quenched QED we construct a non-perturbative fermion-boson vertex that ensures the fermion propagator satisfies the Ward-Takahashi identity, is multiplicatively renormalizable, agrees with perturbation theory for weak couplings and has a critical coupling for dynamical mass generation that is strictly gauge independent. This is in marked contrast to the rainbow approximation in which the critical coupling changes by 50% just between the Landau and Feynman gauges. The use of such a vertex should lead to a more believable study of mass generation.

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Reviewed papers in the Pith corpus that reference this work. Sorted by Pith novelty score.

  1. Landau-Khalatnikov-Fradkin Transformations in Reduced Quantum Electrodynamics: Perturbative and Nonperturbative Dynamics of the Fermion Propagator

    hep-th 2026-05 unverdicted novelty 6.0

    LKF transformations give all-order gauge-transformed fermion propagators in RQED, with ξ=1/3 eliminating one-loop leading logs and numerical checks confirming gauge-invariant condensate and pole mass.