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Chiral Symmetry Breaking with the Curtis-Pennington Vertex

D. Atkinson, V. P. Gusynin, P. Maris

hep-tharXiv:hep-th/9211124

Abstract

We study chiral symmetry breaking in quenched QED4, 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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