The QCD equation of state with dynamical quarks

By S. Borsányi, Gergely Endrodi, Zoltán Fodor, Antal Jakovác, Sándor D. Katz, S. Krieg, C. Ratti, Kálmán K. Szabó. 2010

735 citations recorded by the source corpus.

The present paper concludes our investigation on the QCD equation of state with 2 + 1 staggered flavors and one-link stout improvement. We extend our previous study [JHEP01 (2006) 089] by choosing even finer lattices. Lattices with Nt=6, 8 and 10 are used, and the continuum limit is approached by checking the results at Nt= 12. A Symanzik improved gauge and a stout-link improved staggered fermion action is utilized. We use physical quark masses, that is, for the lightest staggered pions and kaons we fix the mπ/fK and mK/fK ratios to their experimental values. The pressure, the interaction measure, the energy and entropy density and the speed of sound are presented as functions of the temperature in the range 100 ... 1000MeV. We give estimates for the pion mass dependence and for the contribution of the charm quark. We compare our data to the equation of state obtained by the “hotQCD” collaboration.

Subfields: Nuclear and High Energy Physics

View Paper: https://www.semanticscholar.org/paper/7612c8f480ea194ec7e932fc1898927b6d15bff4

How researchers see this paper

The researchers whose trusted networks rank it highest, strongest advocate first. Every researcher gets a different order.

In Nuclear and High Energy Physics

Citations in the corpus

Relativistic Fluid Dynamics in and out of Equilibrium (2017, methodology): “The QCD trace anomaly in equilibrium has been calculated using lattice QCD [131, 132, 220], cf.”
A holographic critical point (2010, background): “tial, and for ˚ 0 ranging from 6We chose [2] to have a denite lattice result to compare to, but there is still disagreement in the literature; for another determination of the equation of state, see [4]. We expect small changes to our model could accomodate variations in the lattice results. 7 T c ˇ”
Exotic Hadrons from Heavy Ion Collisions (2017, methodology): “The information on the entropy density of the system s = ( + p)/T at different temperatures is available from the lattice results p(T )/T 4 and ( − 3p)(T )/T 4 for the pion mass 135 MeV [248].”
Primordial gravitational waves, precisely: the role of thermodynamics in the Standard Model (2018, methodology): “The equation of state in 2 + 1 flavor lattice QCD with physical quark masses was calculated by the “Budapest-Wuppertal” collaboration [61, 62], and their result was confirmed by the “HotQCD” collaboration in Ref.”
Towards the glueball spectrum from unquenched lattice QCD (2012, methodology): “use the same convention for the quark masses as used by the MILC collaboration. The congurations used are taken every 6 trajectories. in the PDG. Majumder and Muller use the results from lattice QCD [35,36] calculations with the HRGM to claim the existence of new light resonances [37]. Megias et al.”
The QCD phase diagram for external magnetic fields (2011, methodology): “cs (LCP) by ﬁxing the ratios fK/mπ and fK/mK to their experimental values. The lattice spacing is determined by fK. Details of the determination of the LCP and the lattice scale can be found in, e.g. [54]. Based on the reasoning presented in section 4, we use the lattice spacing measurements at T= 0”
INTERACTING QUARK MATTER EQUATION OF STATE FOR COMPACT STARS (2013, background): “The two predictions are compared to state-of-the-art lattice data from Borsanyi et al. (2010, 2013), corresponding to two massless and one massive flavor of dynamical quarks.”
Precision SU(3) lattice thermodynamics for a large temperature range (2012, background): “Symanzik action [16, 29], renormalization group-improved actions [30] or xed-point actions [31]. The eect of changing the number of colors [17] was also studied. Results for the pressure of full QCD [9,32{35] are also present only up to (5 10) T c. There are two main reasons for the absence of high ”