Lattice Gluon Propagator in the Landau Gauge: A Study Using Anisotropic Lattices

Understand

Lattice gluon propagators are studied using tadpole and Symanzik improved gauge action in Landau gauge.

• The study is performed using anisotropic lattices with asymmetric volumes.
• The Landau gauge dressing function for the gluon propagator measured on the lattice is fitted according to a leading power behavior: $Z(q^2)\simeq (q^2)^{2\kappa}$ with an exponent $\kappa$ at small momenta.
• The gluon propagators are also fitted using other models and the results are compared.