The Gluon Propagator without lattice Gribov copies on a finer lattice

Abstract

We extend our study of the gluon propagator in quenched lattice QCD using the Laplacian gauge to a finer lattice. We verify the existence of a pole mass as we take the continuum limit and deduce a value of $\sim 600_{-30}^{+150}$ MeV for this pole mass. We find a finite value of $(454(5)\mathrm{MeV}{)}^{-2}$ for the renormalized zero-momentum propagator, in agreement with results on coarser lattices.

5 pages, 5 figures. Extended version to appear in Phys. Rev. D