Impact of Stout-link smearing in lattice fermion actions

Abstract

The impact of stout-link smearing in lattice fermion actions is examined through the consideration of the mass and renormalization functions of the overlap quark propagator over a variety of smeared configurations. Up to six sweeps of stout-link smearing are investigated. For heavy quark masses, the quark propagator is strongly affected by the smearing procedure. For moderate masses, the effect appears to be negligible. A small effect is seen for light quark masses, where dynamical mass generation is suppressed through the smearing procedure.Peter J. Moran, Patrick O. Bowman, Derek B. Leinweber, Anthony G. Williams and J. B. Zhan