Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
1992-11-26
Phys.Lett. B303 (1993) 157-162
Physics
High Energy Physics
High Energy Physics - Theory
19 pages, LaTeX
Scientific paper
10.1016/0370-2693(93)90061-L
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.
Atkinson Dani
Gusynin Valery P.
Maris Pieter
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