The QCD Equation of State to $\mathcal{O}({\mu }_B^4)$ from Lattice QCD

Abstract

We present first results from a first-principles calculation of the QCD equation of state to $\mathcal{O}({\mu }_B^4)$, where ${\mu }_B$ is the baryon chemical potential. We find that second-order corrections are sufficient for a large part of the freeze-out temperature and baryon chemical potential range achieved by the RHIC beam energy scan. Nevertheless, higher-order corrections are necessary to extend the validity of the equation of state down to beam energies $s_{NN}^{1/2}\sim 20$ GeV.

4 pages, 11 figures; contribution to the proceedings of Quark Matter 2014

References in corpus (4)

• The equation of state in (2+1)-flavor QCD
• Highly Improved Staggered Quarks on the Lattice, with Applications to Charm Physics
• Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations
• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics

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