pith. sign in

arxiv: 1408.5313 · v1 · pith:VXUUS5SAnew · submitted 2014-08-22 · ✦ hep-ph · hep-lat

The gluon propagator in Feynman gauge by the method of stationary variance

classification ✦ hep-ph hep-lat
keywords gaugefeynmangluonmethodstationaryvariancecouplingequations
0
0 comments X
read the original abstract

The low-energy limit of pure Yang-Mills SU(3) gauge theory is studied in Feynman gauge by the method of stationary variance, a genuine second-order variational method that is suited to deal with the minimal coupling of fermions in gauge theories. In terms of standard irreducible graphs, the stationary equations are written as a set of coupled non-linear integral equations for the gluon and ghost propagators. A physically sensible solution is found for any strength of the coupling. The gluon propagator is finite in the infrared, with a dynamical mass that decreases as a power at high energies. At variance with some recent findings in Feynman gauge, the ghost dressing function does not vanish in the infrared limit and a decoupling scenario emerges as recently reported for the Landau gauge.

This paper has not been read by Pith yet.

discussion (0)

Sign in with ORCID, Apple, or X to comment. Anyone can read and Pith papers without signing in.