Taste violations in the scalar correlator in mixed action simulations
High Energy Physics - Lattice
2009-04-14 v1
Abstract
We study the behavior of the isovector scalar correlator, which is particularly sensitive to lattice artifacts, using domain-wall valence quarks on a staggered sea (generated by the MILC collaboration). We analyze this according to the prediction from chiral perturbation theory determined by Prelovsek, which indicates that the leading unitarity violations come from taste breaking effects. We show that our data behaves in the way predicted by Prelovsek, thus verifying that the largest contribution to the violations of unitarity which arise at finite lattice spacing can be described by the mixed-action chiral perturbation theory.
Cite
@article{arxiv.0710.0804,
title = {Taste violations in the scalar correlator in mixed action simulations},
author = {C. Aubin and Jack Laiho and Ruth S. Van de Water},
journal= {arXiv preprint arXiv:0710.0804},
year = {2009}
}
Comments
7 pages, 3 figures, talk presented at Lattice 2007, to appear in the proceedings