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arXiv · 2002.01217

QCD equation of state at vanishing and high baryon density: Chiral Mean Field model

Anton Motornenko·Jan Steinheimer·Volodymyr Vovchenko·Stefan Schramm·Horst Stoecker
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Abstract

The thermodynamic properties of high temperature and high density QCD-matter are studied using the Chiral SU(3)-flavor parity-doublet Polyakov-loop quark-hadron mean-field model, CMF. The CMF model provides a proper description of lattice QCD data, heavy-ions physics, and static neutron stars. The behavior of lines of constant pressure with increase of baryon density is discussed. The rapid change of pressure behavior at $μ_B/T\approx3$ suggests a strong contribution of baryons to thermodynamic properties at this region. The position of this region is very close to the radius of convergence for a Taylor expansion of the QCD pressure. The role of mesons and unstable hadrons in the hydrodynamic expansion of strongly interacting matter is also discussed.

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Anton Motornenko, Jan Steinheimer, Volodymyr Vovchenko, Stefan Schramm, Horst Stoecker. 2020-02-04. QCD equation of state at vanishing and high baryon density: Chiral Mean Field model. https://doi.org/10.1016/j.nuclphysa.2020.121836

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