The Landau gauge gluon and ghost propagators in 4D SU(3) gluodynamics in large lattice volumes

Understand

We present recent results of the Landau gauge gluon and ghost propagators in SU(3) pure gauge theory at Wilson \beta=5.7 for lattice sizes up to 80^4 corresponding to physical volumes up to (13.2 fm)^4.

• In particular, we focus on finite-volume and Gribov copy effects.
• We employ a gauge fixing method that combines a simulated annealing algorithm with finalizing overrelaxation.
• We find the gluon propagator for the largest volumes and at q^2 ~ 0.01 GeV^2 to become flat.