The QCD vacuum probed by overlap fermions

Details The QCD vacuum probed by overlap fermions The QCD vacuum probed by overlap fermions

2006-10-13

arxiv.org/abs/hep-lat/0610087v1

PoSLAT2006:078,2006

Physics

High Energy Physics

High Energy Physics - Lattice

7 pages, 4 figures, talk presented at the XXIVth International Symposium on Lattice Field Theory, 23-28 July 2006, Tucson, Ari

Scientific paper

We summarize different uses of the eigenmodes of the Neuberger overlap operator for the analysis of the QCD vacuum, here applied to quenched configurations simulated by means of the Luescher-Weisz action. We describe the localization and chiral properties of the lowest modes. The overlap-based topological charge density (with and without UV-filtering) is compared with the results of UV-filtering for the field strength tensor. The latter allows to identify domains of good (anti-)selfduality. All these techniques together lead to a dual picture of the vacuum, unifying the infrared instanton picture with the presence of singular defects co-existent at different scales.

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