Three complementary views on the QCD vacuum structure, all based on eigenmodes of the overlap operator, are reported in their interrelation: (i) spectral density, localization and chiral properties of the modes, (ii) the possibility of filtering the field strength with the aim to detect selfdual and antiselfdual domains and (iii) the various faces of the topological charge density, with and without a cutoff \lambda_{\rm cut} = O(\Lambda_{QCD}). The techniques are tested on quenched SU(3) configurations.
@article{arxiv.hep-lat/0611007,
title = {Vacuum structure as seen by overlap fermions},
author = {E. -M. Ilgenfritz and K. Koller and Y. Koma and G. Schierholz and T. Streuer and V. Weinberg},
journal= {arXiv preprint arXiv:hep-lat/0611007},
year = {2008}
}
Comments
4 pages, 3 figures, talk given by E.-M. I. at "Quark Confinement and the Hadron Spectrum VII", Ponta Delgada, Azores, Portugal, to appear in the Proceedings