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Type: Conference paper
Title: Instanton contributions to the low-lying hadronic mass spectrum
Author: Thomas, S.
Kamleh, W.
Leinweber, D.
Citation: PoS (Lattice 2012); 256
Publisher: Proceedings of Science
Publisher Place: Italy
Issue Date: 2012
ISSN: 1824-8039
Conference Name: International Symposium on Lattice Field Theory (30th : 2012 : Cairns, Australia)
Statement of
Samuel Thomas, Waseem Kamleh, and Derek Leinweber
Abstract: The masses of the light hadrons are calculated on in lattice QCD at various stages of stout-link smearing tuned specifically to preserve instanton-like objects. The calculation is performed using a 20³ × 40 dynamical FLIC ensemble with lattice spacing 0.126 fm at a range of pion masses; the effect of vacuum instanton content is compared at a common pion mass of 350 MeV. We find little evidence that the instanton effect is as significant as models would suggest. In fact, the direct instanton-induced effect cannot be seen at all.
Description: Extent: 5p.
Rights: © Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence
DOI: 10.22323/1.164.0256
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Special Research Centre for the Subatomic Structure of Matter publications

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