Update on the 2+1+1 flavor QCD equation of state with HISQ
A. Bazavov, C. Bernard, C. DeTar, J. Foley, Steven Gottlieb, U.M., Heller, J.E. Hetrick, J. Laiho, L. Levkova, J. Osborn, R. Sugar, D., Toussaint, R.S. Van de Water, R. Zhou (MILC collaboration)
TL;DR
This paper reports on updated calculations of the QCD equation of state using 2+1+1 flavors of HISQ quarks, covering a range of temperatures up to nearly 1 GeV, with physical strange and charm quark masses.
Contribution
It provides new lattice QCD results for the equation of state with physical strange and charm quark masses at multiple lattice spacings and high temperatures.
Findings
Equation of state data up to 967 MeV temperature
Ensembles with different lattice temporal extents (6, 8, 10)
Physical strange and charm quark masses used
Abstract
We present recent results on the QCD equation of state with 2+1+1 flavors of highly improved staggered quarks (HISQ). We focus on three sets of ensembles with temporal extent 6, 8 and 10, that reach up to temperatures of 967, 725 and 580 MeV, respectively. The strange and charm quark masses are tuned to the physical values and the light quarks mass is set to one fifth of the strange. This corresponds to a Goldstone pion of about 300 MeV.
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Taxonomy
TopicsHigh-Energy Particle Collisions Research · Quantum Chromodynamics and Particle Interactions · Particle physics theoretical and experimental studies