Localization properties of fermions and bosons

Details Localization properties of fermions and bosons Localization properties of fermions and bosons

2006-11-29

arxiv.org/abs/hep-lat/0611034v2

AIPConf.Proc.892:29-35,2007

Physics

High Energy Physics

High Energy Physics - Lattice

Invited talk at "Quark Confinement and the Hadron Spectrum VII", Azores, Portugal, 2-7 September 2006. 7 pages, 11 figures. To

Scientific paper

10.1063/1.2714343

The topological structure of the QCD vacuum can be probed by monitoring the spatial localization of the low-lying Dirac eigenmodes. This approach can be pursued on the lattice, and unlike the traditional one requires no smoothing of the gauge field. I review recent lattice studies, attempting to extract a consistent description. What emerges is a picture of the vacuum as a ``topological sandwich'' of alternating, infinitely thin 3d layers of opposite topological charge, as originally seen in direct measurements of the topological charge density.

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