Infrared Gluon Propagator from lattice QCD: results from large asymmetric lattices
arXiv:hep-lat/0511043 · doi:10.1103/PhysRevD.74.034513
Abstract
The infrared limit of the lattice Landau gauge gluon propagator is studied. We show that the lattice data is compatible with the pure power law $(q^2)^{2 κ}$ solution of the Dyson-Schwinger equations. Using various lattice volumes, the infinite volume limit for the exponent $κ$ is measured. Although, the results allow $κ= 0.498 - 0.525$, the lattice data favours $κ\sim 0.52$, which would imply a vanishing zero momentum gluon propagator.
Final version to appear in Phys Rev D