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Chiral Symmetry Breaking with the Curtis-Pennington Vertex

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arxiv hep-th/9211124 v1 pith:RTCDRHNF submitted 1992-11-26 hep-th

D. Atkinson , V.P. Gusynin , P. Maris This is my paper · ORCID
classification hep-th
keywords breakingchiralsymmetryvertexagreementanalysisansatzapproximation
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abstract

We study chiral symmetry breaking in quenched QED$_4$, using a vertex Ansatz recently proposed by Curtis and Pennington. Bifurcation analysis is employed to establish the existence of a critical coupling and to estimate its value. The main results are in qualitative agreement with the ladder approximation, the numerical changes being minor.

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