Screened massive expansion of Schwinger-Dyson equations
High Energy Physics - Phenomenology
2023-03-08 v1 High Energy Physics - Lattice
High Energy Physics - Theory
Abstract
A general formal derivation of the screened massive expansion is provided by Schwinger-Dyson equations. Some known issues of the expansion are clarified and a more general framework is established for a natural extension of the method to two-loop or to amplitudes which are not directly defined by a generating functional. For instance, a one-loop screened expansion is given for the effective gauge-parameter-independent gluon propagator which arises from the pinch-technique.
Keywords
Cite
@article{arxiv.2211.06448,
title = {Screened massive expansion of Schwinger-Dyson equations},
author = {Fabio Siringo},
journal= {arXiv preprint arXiv:2211.06448},
year = {2023}
}