Preconditioning Maximal Center Gauge with Stout Link Smearing in SU(3)
Alan \'O Cais, Waseem Kamleh, Kurt Langfeld, Ben Lasscock, Derek, Leinweber, Peter Moran, Andre Sternbeck, Lorenz von Smekal
TL;DR
This paper investigates the effect of stout link smearing as a preconditioning step in Maximal Center Gauge fixing for SU(3) gauge theory, showing it improves gauge fixing maxima but reduces vortex detection and string tension.
Contribution
It introduces a novel preconditioning method using stout link smearing to enhance gauge fixing in SU(3) lattice gauge theory.
Findings
Preconditioning achieves higher gauge fixing maxima.
Reduces the number of identified vortices.
Decreases vortex-only string tension.
Abstract
Center vortices are studied in SU(3) gauge theory using Maximal Center Gauge (MCG) fixing. Stout link smearing and over-improved stout link smearing are used to construct a preconditioning gauge field transformation, applied to the original gauge field before fixing to MCG. We find that preconditioning successfully achieves higher gauge fixing maxima. We observe a reduction in the number of identified vortices when preconditioning is used, and also a reduction in the vortex-only string tension.
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