arXiv:hep-ph/9906519·v1·High Energy Physics — Phenomenology
Nonlinear effects in Schwinger-Dyson Equation
Hiroaki Kouno🇯🇵 · Akira Hasegawa🇯🇵 · Masahiro Nakano🇯🇵 · Kunito Tuchitani🇯🇵
Abstract
We study nonlinear effects in the QED ladder Schwinger-Dyson(SD) equation. Without further approximations, we show that all nonlinear effects in the ladder SD equation can be included in the effective couplings and how a linear approximation works well. The analyses is generalized in the case of the improved ladder calculation with the Higashijima-Miransky approximation.
Comments: 7 pages, 2 figures