Zoltan Fodor
(University of Wuppertal)
14/06/2010, 14:30
Nonzero temperature and density
We extend our previous two studies on the finite temperature cross-over of QCD. We chose
even finer lattices ($N_t$=16) and work with physical quark masses. The
new results are in complete agreement with our earlier ones. We
compare our findings with the published results of the hotQCD
collaboration (obtained with the asqtad and p4 actions with $N_t = 8$).
All these results are confronted...
Szabolcs Borsanyi
(University of Wuppertal)
14/06/2010, 14:50
Nonzero temperature and density
We determine the equation of state of QCD from lattice simulations. Lattices
with Nt = 6 and 8 are used, and the continuum limit is approached by checking the results
at Nt = 10 and 12. A Symanzik improved gauge and a stout-link improved staggered
fermionic action is utilized; the light and strange quark masses are set to their physical
values.
Christian Schmidt
(Frankfurt Institute for Advanced Studies)
14/06/2010, 15:10
Nonzero temperature and density
We analyze the universal scaling behavior of (2+1)-flavor QCD in terms of
various scaling functions corresponding to the magnetic equation of state,
the specific heat and generalized quark number susceptibilities.
Lattice simulations on Nt=4 and Nt=8 lattices with improved staggered fermions
within a wide range of quark masses have been performed and are fitted to the
scaling functions....
Wolfgang Soeldner
(GSI Darmstadt)
14/06/2010, 15:30
Nonzero temperature and density
We present recent results from HotQCD simulations of 2+1 flavors of improved staggered fermions at zero baryon number density near the high temperature crossover. Included are new results from simulations of asqtad fermions at Nt = 12 and a nearly physical Goldstone pion mass and from simulations of HISQ fermions at Nt = 8. We focus on observables sensitive to chiral symmetry and...
Alexei Bazavov
(University of Arizona)
14/06/2010, 15:50
Nonzero temperature and density
Taste symmetry violations in staggered fermion formulations correlate strongly with the cut-off (lattice spacing) dependence in physical observables. Better taste symmetry on the lattice can be achieved either by decreasing the lattice spacing and going to larger temporal extent in finite-temperature calculations, or by further improving the action. The Highly Improved Staggered Quark (HISQ)...
