The effects of Gaussian quark-field smearing and analytic stout-link smearing on the correlations of gauge-invariant extended baryon operators are studied. Gaussian quark-field smearing substantially reduces contributions from the short wavelength modes of the theory, while stout-link smearing significantly reduces the noise from the stochastic evaluations. The use of gauge-link smearing is shown to be crucial for baryon operators constructed of covariantly-displaced quark fields. Preferred smearing parameters are determined for a lattice spacing a_s ~ 0.1 fm.
@article{arxiv.hep-lat/0509179,
title = {Combining Quark and Link Smearing to Improve Extended Baryon Operators},
author = {Adam Lichtl and Subhasish Basak and Robert Edwards and George T. Fleming and Urs M. Heller and Colin Morningstar and David Richards and Ikuro Sato and Stephen Wallace},
journal= {arXiv preprint arXiv:hep-lat/0509179},
year = {2014}
}