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arXiv · hep-lat/0111055

Probing the QCD vacuum with overlap fermions

Robert G. Edwards·Urs M. Heller
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Abstract

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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Robert G. Edwards, Urs M. Heller. 2001-11-28. Probing the QCD vacuum with overlap fermions. https://doi.org/10.1016/s0920-5632(02)01401-9

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