Strong coupling analysis of Aoki phase in Staggered-Wilson fermions
High Energy Physics - Lattice
2012-12-21 v1
Abstract
We study strong-coupling lattice QCD with staggered-Wilson fermions, with an emphasis on the possibility of spontaneous parity breaking. We perform effective potential analysis in the strong-coupling limit. From gap equations we find the pion condensate becomes nonzero in some range of a mass parameter, which indicates the existence of the parity-broken phase. We also find massless pions and PCAC relations around the second-order phase boundary. These results suggest that we can take the chiral limit by tuning a mass parameter in lattice QCD with staggered-Wilson fermions as with the Wilson fermion.
Keywords
Cite
@article{arxiv.1210.5954,
title = {Strong coupling analysis of Aoki phase in Staggered-Wilson fermions},
author = {Takashi Z. Nakano and Tatsuhiro Misumi and Taro Kimura and Akira Ohnishi},
journal= {arXiv preprint arXiv:1210.5954},
year = {2012}
}
Comments
Presented at 30th International Symposium on Lattice Field Theory (Lattice 2012), Cairns, Australia, June 24-29, 2012