Probing the QCD vacuum with overlap fermions

Details Probing the QCD vacuum with overlap fermions Probing the QCD vacuum with overlap fermions

2001-11-28

arxiv.org/abs/hep-lat/0111055v1

Nucl.Phys.Proc.Suppl. 109A (2002) 124-128

Physics

High Energy Physics

High Energy Physics - Lattice

LaTeX, 5 pages, 5 postscript figures. Talk given by U.M. Heller at the Workshop on Lattice Hadron Physics ``LHP2001'', July 9

Scientific paper

10.1016/S0920-5632(02)01401-9

We use low lying eigenvectors of the overlap-Dirac operator as a probe of the QCD vacuum. If instantons play a significant role one would expect the low lying eigenmodes of the overlap-Dirac operator to consist mainly of the mixed ``would be zero modes''. Then, the eigenmodes should exhibit local chirality. Studying a recently introduced local chirality parameter, we find evidence supporting this picture.

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