Combining Quark and Link Smearing to Improve Extended Baryon Operators

Details Combining Quark and Link Smearing to Improve Extended Baryon Operators Combining Quark and Link Smearing to Improve Extended Baryon Operators

2005-09-29

arxiv.org/abs/hep-lat/0509179v1

PoSLAT2005:076,2006

Physics

High Energy Physics

High Energy Physics - Lattice

6 pages, 5 figures, talk presented at Lattice 2005 (Hadron spectrum)

Scientific paper

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.

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