Lattice QCD with 8 and 12 degenerate quark flavors
Abstract
We compare extensive simulations of QCD with 8 and 12 flavors of degenerate quarks, using the DBW2 gauge action, naive staggered fermions, and the rational hybrid Monte Carlo algorithm. A variety of values of the coupling constant, quark mass, and lattice size have been used. Our data suggests that, as the bare coupling is decreased, a rapid cross-over, which dramatically changes the lattice scale, exists with both 8 and 12 flavors. The scale change across this cross-over is much larger with 12 flavors than it is with 8 flavors. All of the observables we have measured, in both the zero and finite temperature systems, are consistent with a chiral symmetry breaking phase for the zero temperature theory on the weak coupling side of the rapid cross-over.
Keywords
Cite
@article{arxiv.0910.3216,
title = {Lattice QCD with 8 and 12 degenerate quark flavors},
author = {Xiao-Yong Jin and Robert D. Mawhinney},
journal= {arXiv preprint arXiv:0910.3216},
year = {2010}
}
Comments
7 pages, 8 figures, Talk presented at The XXVII International Symposium on Lattice Field Theory, LATTICE 2009 - Peking University, Beijing, China / July 26 - 31, 2009