Progress on four flavor QCD with the HISQ action. (arXiv:0911.0869v1 [hep-lat])

We describe recent progress on generation of gauge configurations using theHighly Improved Staggered Quark (HISQ) action that was designed by theHPQCD/UKQCD collaboration. The HISQ action requires two levels of smearing witha reunitarization of the links before the second smearing. We » Full text »