Equation of state in 2 + 1 flavor QCD at high temperatures
Abstract
We calculate the Equation of State at high temperatures in (2+1) flavor QCD using the highly improved staggered quark (HISQ) action. We study the lattice spacing dependence of the pressure at high temperatures using lattices with temporal extent $N_{\tau}=6,~8,~10$ 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 reasonable agreement with the HTL calculation at the highest temperatures and a tension with the EQCD calculation of a few percent, with the lattice results in the middle between both.
- Publication:
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The 36th Annual International Symposium on Lattice Field Theory. 22-28 July
- Pub Date:
- July 2018
- DOI:
- 10.48550/arXiv.1811.12902
- arXiv:
- arXiv:1811.12902
- Bibcode:
- 2018slft.confE.165W
- Keywords:
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- High Energy Physics - Lattice;
- High Energy Physics - Phenomenology;
- Nuclear Theory
- E-Print:
- Parallel talk at the XIIIth Quark Confinement and the Hadron Spectrum conference. 12 pages, 8 figures