TY - JOUR
T1 - Progress on four flavor QCD with the HISQ action
AU - Bazavov, A.
AU - Bernard, C.
AU - DeTar, C.
AU - Freeman, W.
AU - Gottlie, Steven
AU - Heller, U. M.
AU - Hetrick, J. E.
AU - Laiho, J.
AU - Levkova, L.
AU - Osborn, J.
AU - Sugar, R.
AU - Toussaint, D.
AU - Van De Wateri, R. S.
N1 - Publisher Copyright:
© Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
PY - 2009
Y1 - 2009
N2 - We describe recent progress on generation of gauge configurations using the Highly Improved Staggered Quark (HISQ) action that was designed by the HPQCD/UKQCD collaboration. The HISQ action requires two levels of smearing with a reunitarization of the links before the second smearing. We describe how we deal with the occurrence of occasional large forces arising from the reunitarization step. The MILC collaboration is currently generating ensembles with approximate lattice spacings of 0.15, 0.12, 0.09, and 0.06 fm, with the strange and charm quark masses close to their physical values and the mass of the light quarks ml set to 0.2ms. We present recent results for pion taste splittings, light hadron masses, the static potential, the c dispersion relation and the topological susceptibility.
AB - We describe recent progress on generation of gauge configurations using the Highly Improved Staggered Quark (HISQ) action that was designed by the HPQCD/UKQCD collaboration. The HISQ action requires two levels of smearing with a reunitarization of the links before the second smearing. We describe how we deal with the occurrence of occasional large forces arising from the reunitarization step. The MILC collaboration is currently generating ensembles with approximate lattice spacings of 0.15, 0.12, 0.09, and 0.06 fm, with the strange and charm quark masses close to their physical values and the mass of the light quarks ml set to 0.2ms. We present recent results for pion taste splittings, light hadron masses, the static potential, the c dispersion relation and the topological susceptibility.
UR - http://www.scopus.com/inward/record.url?scp=85055251539&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85055251539&partnerID=8YFLogxK
M3 - Conference Article
AN - SCOPUS:85055251539
SN - 1824-8039
VL - 91
JO - Proceedings of Science
JF - Proceedings of Science
T2 - 27th International Symposium on Lattice Field Theory, LAT 2009
Y2 - 26 July 2009 through 31 July 2009
ER -