We argue that quenched QCD has non-trivial phase structure for negative quark mass, including the possibility of a parity-flavor breaking Aoki phase. This has implications for simulations with domain-wall or overlap fermions.
@article{arxiv.hep-lat/0409053,
title = {Is there an Aoki phase in quenched QCD?},
author = {Maarten Golterman and Stephen Sharpe and Robert Singleton},
journal= {arXiv preprint arXiv:hep-lat/0409053},
year = {2009}
}
Comments
Parallel talk presented at Lattice2004(spectrum), Fermilab, June 21-26, 2004