We conclude our investigation on the QCD equation of state (EoS) with 2+1 staggered flavors and one-link stout improvement. We extend our previous study [JHEP 0601:089 (2006)] by choosing even finer lattices. These new results [for details see arXiv:1007.2580] support our earlier findings. Lattices with N_t=6,8 and 10 are used, and the continuum limit is approached by checking the results at N_t=12. A Symanzik improved gauge and a stout-link improved staggered fermion action is taken; the light and strange quark masses are set to their physical values. Various observables are calculated in the temperature (T) interval of 100 to 1000~MeV. We compare our data to the equation of state obtained by the "hotQCD" collaboration.
@article{arxiv.1011.4229,
title = {N_f=2+1 flavour equation of state},
author = {Szabolcs Borsanyi and Gergely Endrodi and Zoltan Fodor and Antal Jakovac and Sandor D. Katz and Stefan Krieg and Claudia Ratti and Kalman K. Szabo},
journal= {arXiv preprint arXiv:1011.4229},
year = {2010}
}
Comments
presented at the XXVIII. International Symposium on Lattice Field Theory, June 14-19,2010, Villasimius, Sardinia Italy