Chiral Symmetry Breaking with the Curtis-Pennington Vertex
arXiv:hep-th/9211124 · doi:10.1016/0370-2693(93)90061-L
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.
19 pages, LaTeX