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Type: Journal article
Title: Improved smoothing algorithms for lattice gauge theory
Author: Bonnet, F.
Leinweber, D.
Williams, A.
Zanotti, J.
Citation: Physical Review. D. Particles, Fields, Gravitation and Cosmology, 2002; 65(11):114510-1-114510-19
Publisher: American Physical Soc
Issue Date: 2002
ISSN: 1550-7998
Statement of
Frédéric D. R. Bonnet, Derek B. Leinweber, Anthony G. Williams, and James M. Zanotti
Abstract: The relative smoothing rates of various gauge field smoothing algorithms are investigated on O(a²)-improved SU(3) Yang-Mills gauge field configurations. In particular, an O(a²)-improved version of APE smearing is motivated by considerations of smeared link projection and cooling. The extent to which the established benefits of improved cooling carry over to improved smearing is critically examined. We consider representative gauge field configurations generated with an O(a²)-improved gauge field action on 16³×32 lattices at β=4.38 and 24³×36 lattices at β=5.00 having lattice spacings of 0.165(2) fm and 0.077(1) fm, respectively. While the merits of improved algorithms are clearly displayed for the coarse lattice spacing, the fine lattice results put the various algorithms on a more equal footing and allow a quantitative calibration of the smoothing rates for the various algorithms. We find the relative rate of variation in the action may be succinctly described in terms of simple calibration formulas which accurately describe the relative smoothness of the gauge field configurations at a microscopic level.
Rights: ©2002 American Physical Society
RMID: 0020020495
DOI: 10.1103/PhysRevD.65.114510
Appears in Collections:Special Research Centre for the Subatomic Structure of Matter publications

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