The QCD equation of state with 2+1 flavors of Highly Improved Staggered Quarks (HISQ)

Abstract

One of the fundamental properties of the quark-gluon plasma (QGP), the equation of state, is a subject of extensive studies in lattice QCD and an essential requirement for the correct hydrodynamic modeling of heavy-ion collisions. Lattice QCD provides first-principle calculations for the physics in the non-perturbative regime. In this contribution, we report on recent progress by the HotQCD collaboration in studying the 2+1 flavor equation of state on lattices with the temporal extent N_tau=6, 8, 10 and 12 in Highly Improved Staggered Quarks (HISQ) discretization scheme. Comparisons with equation of state calculations with different fermion actions are also discussed.

4 pages, 4 figures, talk presented at the Quark Matter 2012 International Conference, Washington D.C., Aug 13-18, 2012

References in corpus (2)

• The QCD equation of state with dynamical quarks
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics

Cited by in corpus (10)

• The equation of state in (2+1)-flavor QCD
• On the phase structure and thermodynamics of QCD
• Thermodynamics of QCD at vanishing density
• QCD at finite temperature and density within the fRG approach: An overview
• Thermodynamics of (2+1)-flavor strongly interacting matter at nonzero isospin
• Thermodynamics of the QCD transition from lattice
• The equation of state of QCD at finite chemical potential
• Quark and Polyakov-loop correlations in effective models at zero and non-vanishing density
• QCD bulk thermodynamics and conserved charge fluctuations with HISQ fermions
• Update on the 2+1+1 flavor QCD equation of state with HISQ