Comparing SU(2) to SU(3) gluodynamics on large lattices

Abstract

We study the SU(2) gluon and ghost propagators in Landau gauge on lattices up to a size of 112^4. A comparison with the SU(3) case is made and finite-volume effects are then investigated. We find that for a large range of momenta the SU(2) and SU(3) propagators are remarkably alike. In the low-momentum region we compare with recent results obtained in DSE studies on a 4-torus.

7 pages, 5 figures, poster presented at the XXV International Symposium on Lattice Field Theory, July 30 - August 4 2007, Regensburg, Germany