We calculate the Equation of State at high temperatures in 2+1 flavor QCD using the highly improved staggered quark action. We study the lattice spacing dependence of the pressure at high temperatures using lattices with temporal extent Nτ=6,8,10 and 12 and perform continuum extrapolations. We also give a continuum estimate for the Equation of State up to temperatures T=2 GeV, which are then compared with results of the weak-coupling calculations. We find a reasonably good agreement with the weak-coupling calculations at the highest temperatures.
@article{arxiv.1710.05024,
title = {Equation of State in 2+1 Flavor QCD at High Temperatures},
author = {A. Bazavov and P. Petreczky and J. H. Weber},
journal= {arXiv preprint arXiv:1710.05024},
year = {2018}
}