QCD equation of state at nonzero chemical potential: continuum results with physical quark masses at order μ2
By S. Borsányi, Gergely Endrodi, Zoltán Fodor, Sándor D. Katz, S. Krieg, C. Ratti, Kálmán K. Szabó. 2012
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A bstractWe determine the equation of state of QCD for nonzero chemical potentials via a Taylor expansion of the pressure. The results are obtained for Nf = 2 + 1 flavors of quarks with physical masses, on various lattice spacings. We present results for the pressure, interaction measure, energy density, entropy density, and the speed of sound for small chemical potentials. At low temperatures we compare our results with the Hadron Resonance Gas model. We also express our observables along trajectories of constant entropy over particle number. A simple parameterization is given (the Matlab/Octave script parameterization.m, submitted to the arXiv along with the paper), which can be used to reconstruct the observables as functions of T and μ, or as functions of T and S/N.
Subfields: Astronomy and Astrophysics, Nuclear and High Energy Physics
View Paper: https://www.semanticscholar.org/paper/c1711a06e74b1b3f4be90ef66da8ccfe14ba94a4
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In Nuclear and High Energy Physics
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Citations in the corpus
- Constraining the Speed of Sound inside Neutron Stars with Chiral Effective Field Theory Interactions and Observations (2018, background): “Lattice QCD calculations at finite temperature and zero chemical potential show that c 1 3S 2 < , and that the introduction of a small baryon chemical potential does not alter this result (Borsanyi et al. 2012).”
- QCD at finite temperature and chemical potential from Dyson–Schwinger equations (2018, result): “12 and compared to results of lattice QCD [6, 429], again with qualitative and partly quantitative agreement.”
- Three-loop HTLpt thermodynamics at finite temperature and chemical potential (2014, background): “The μB = 0 lattice data are from [1] and the μB = 400 MeV lattice data are from [4].”