What Lattice QCD tell us about the Landau Gauge Infrared Propagators

Understand

The calculation of the Landau gauge gluon propagator performed in Coimbra using lattice QCD simulations is reviewed.

• Particular attention is given to the behavior of the gluon propagator in the infrared region and the value of $D(0)$.
• In the second part of the article, the modeling of the lattice data using massive type propagators and Gribov type propagators is discussed.
• Four different mass scales are required to describe the propagator over the full range of momenta accessed by the simulations discussed here.