Over-improved stout-link smearing
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(Published version)
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2008
Authors
Moran, P.
Leinweber, D.
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Physical Review D: Particles, Fields, Gravitation and Cosmology, 2008; 77(9):094501-1-094501-9
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Peter J. Moran and Derek B. Leinweber
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Abstract
A new over-improved stout-link smearing algorithm, designed to stabilize instanton-like objects, is presented. A method for quantifying the selection of the over-improvement parameter, epsilon, is demonstrated. The new smearing algorithm is compared with the original stout-link smearing, and Symanzik improved smearing through calculations of the topological charge and visualizations of the topological charge density. We find the incorporation of improvement in stout-link smearing to be essential for the accurate study of QCD vacuum structure.
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©2008 American Physical Society