The Laplacian Gauge Gluon Propagator in SU(N_c)

TL;DR

This study investigates the gluon propagator in the Laplacian gauge across different SU(N_c) gauge groups using quenched lattice QCD, revealing minimal dependence on the number of colors and suggesting an almost N_c-independent gluon pole mass.

Contribution

The paper provides the first detailed analysis of the gluon propagator's dependence on N_c in Laplacian gauge within quenched lattice QCD, highlighting its near independence from the number of colors.

Findings

Weak N_c dependence of the gluon propagator across momentum range

Gluon pole mass is nearly N_c-independent in units of string tension

Supports universality of gluon properties in different SU(N_c) gauge theories

Abstract

We examine the gluon propagator in the Laplacian gauge in quenched lattice QCD as a function of the number of colours. We observe a weak dependence on $N_c$ over the whole momentum range. This implies an almost $N_c$-independent gluon pole mass in units of the string tension.