Low momentum propagators at two loops in gluon mass model

TL;DR

This paper calculates two-loop corrections to the gluon propagator at low momentum within a gluon mass model, enhancing the understanding of gluon behavior and its comparison with lattice data.

Contribution

It introduces two-loop corrections in a gluon mass model as an alternative to Gribov's approach, improving gluon propagator estimates.

Findings

Better agreement with lattice data for gluon propagator

Refined estimate of the gluon propagator freeze point

Advancement in modeling low-momentum gluon behavior

Abstract

We compute the two loop corrections to the gluon propagator for low momentum in a gluon mass model. This model has recently been proposed as an alternative to the Gribov construction in the way it handles Gribov copies in the gauge fixing. The corrections provide improvements for estimating the point where the gluon propagator freezes in relation to lattice data.