Stout-link smearing in lattice fermion actions

Details Stout-link smearing in lattice fermion actions Stout-link smearing in lattice fermion actions

2009-08-26

arxiv.org/abs/0908.3726v1

Phys.Rev.D80:074503,2009

Physics

High Energy Physics

High Energy Physics - Lattice

8 pages, 4 figures

Scientific paper

10.1103/PhysRevD.80.074503

The properties of the momentum space quark propagator in Landau gauge are studied for the overlap quark action in quenched lattice QCD. Numerical calculations are performed over four ensembles of gauge configurations, where three are smeared using either 1, 3, or 6 sweeps of stout-link smearing. We calculate the non-perturbative wave function renormalization function $Z(p)$ and the non-perturbative mass function $M(p)$ for a variety of bare quark masses. We find that the wave-function renormalization function is slightly sensitive to the number of stout-link smearing sweeps. For the mass function we find the effect of the stout-link smearing algorithm to be small for moderate to light bare quark masses. For a heavy bare quark mass we find a strong dependence on the number of smearing sweeps.

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