The Gluon Propagator with Two-loop Schwinger-Dyson Equations
High Energy Physics - Phenomenology
2014-09-05 v2 High Energy Physics - Theory
Abstract
Gluon, ghost, and quark propagators are computed in the Schwinger-Dyson formalism. The full set of one-loop and two-loop contributions to the gap equations are evaluated for the first time. A new and efficient method for dealing with quadratic divergences is presented and a consistent renormalization method is proposed. We find that the two-loop contribution to the propagators is subleading, good fits to lattice data are possible, and reliable vertex models are important to obtaining desired ultraviolet, infrared, and gauge-symmetric behavior.
Cite
@article{arxiv.1403.4350,
title = {The Gluon Propagator with Two-loop Schwinger-Dyson Equations},
author = {Joseph Meyers and Eric S. Swanson},
journal= {arXiv preprint arXiv:1403.4350},
year = {2014}
}
Comments
13 pages, 6 figures. v2: new figures, added references and discussion