A comparative study of overlap and staggered fermions in QCD
High Energy Physics - Lattice
2009-11-10 v1
Abstract
We perform a comparative study of the infrared properties of overlap and staggered fermions in QCD. We observe that the infrared spectrum of the APE/HYP improved staggered Dirac operator develops a four-fold near-degeneracy and is in quantitative agreement with the infrared spectrum of the overlap operator. The near-degeneracy allows us to identify the zero modes of the staggered operator and we find that the number of zero modes is in line with the topological index of the overlap operator.
Cite
@article{arxiv.hep-lat/0409108,
title = {A comparative study of overlap and staggered fermions in QCD},
author = {S. Dürr and Ch. Hoelbling and U. Wenger},
journal= {arXiv preprint arXiv:hep-lat/0409108},
year = {2009}
}
Comments
Talk presented at Lattice2004(chiral), Fermilab, June 21-26, 2004, 3 pages, 2 figures