We discuss a lattice implementation of the center-symmetric Landau gauge, and we show results for constraints in the link average and in the gluon propagator.
Quantum chromodynamics in two spacetime dimensions is investigated with the Functional Renormalization Group. We use a functional formulation with covariant gauge fixing and derive Renormalization Group flow equations for the gauge coupling, quark mass and an algebraically complete set of local fermion-fermion interaction vertices. The flow, based on a convenient Callan–Symanzik-type...
The gluon and ghost propagators are computed in full QCD using non-perturbative order-a improved Clover fermions above and below the deconfinement temperature. Our simulations employ a setup that yields a pion mass of 290MeV at T=0. Defining a gluon mass m_g from the inverse of the gluon propagator *at zero momenta, we show that both the electric and magnetic masses have a smooth behaviour...
We discuss the existence of Landau-pole-free renormalization group trajectories in the Minkowskian version of the Curci-Ferrari model and study how those are connected to the trajectories of the Euclidean version of the model.