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Nonlinear effects in Schwinger-Dyson Equation

Hiroaki Kouno·Akira Hasegawa·Masahiro Nakano·Kunito Tuchitani
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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.

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Hiroaki Kouno, Akira Hasegawa, Masahiro Nakano, Kunito Tuchitani. 1999-06-28. Nonlinear effects in Schwinger-Dyson Equation. https://arxiv.org/abs/hep-ph/9906519

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