Bazavov, A. and Bhattacharya, Tanmoy and DeTar, C. and Ding, H. -T. and Gottlieb, Steven and Gupta, Rajan and Hegde, P. and Heller, U. M. and Karsch, F. and Laermann, E. and Levkova, L. and Mukherjee, Swagato and Petreczky, P. and Schmidt, C. and Schroeder, C. and Soltz, R. A. and Soeldner, W. and Sugar, R. and Wagner, M. and Vranas, P. (2014) Equation of state in (2+1)-flavor QCD. PHYSICAL REVIEW D, 90 (9): 094503. ISSN 2470-0010, 2470-0029
Full text not available from this repository.Abstract
We present results for the equation of state in (2 + 1)-flavor QCD using the highly improved staggered quark action and lattices with temporal extent N tau = 6, 8, 10, and 12. We show that these data can be reliably extrapolated to the continuum limit and obtain a number of thermodynamic quantities and the speed of sound in the temperature range 130-400 MeV. We compare our results with previous calculations and provide an analytic parameterization of the pressure, from which other thermodynamic quantities can be calculated, for use in phenomenology. We show that the energy density in the crossover region, 145 MeV <= T <= 163 MeV, defined by the chiral transition, is epsilon(c) = (0.18-0.5) GeV/fm(3), i.e., (1.2-3.1) epsilon(nuclear). At high temperatures, we compare our results with resummed and dimensionally reduced perturbation theory calculations. As a byproduct of our analyses, we obtain the values of the scale parameters r(0) from the static quark potential and w(0) from the gradient flow.
| Item Type: | Article |
|---|---|
| Uncontrolled Keywords: | MONTE-CARLO; LATTICE QCD; FLAVOR; |
| Subjects: | 500 Science > 530 Physics |
| Divisions: | Physics > Institute of Theroretical Physics > Chair Professor Schäfer > Group Gunnar Bali |
| Depositing User: | Dr. Gernot Deinzer |
| Date Deposited: | 07 Aug 2019 13:50 |
| Last Modified: | 07 Aug 2019 13:51 |
| URI: | https://pred.uni-regensburg.de/id/eprint/9216 |
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