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Simultaneous description of high density QCD matter in heavy ion collisions and neutron star observations
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A combined constraint on the QCD equation of state, at high densities, from connecting neutron star observations to data from heavy ion reactions is presented. We use the Chiral Mean Field Model which can describe neutron star and iso-spin symmetric matter and allows the consistent calculation of the density and momentum dependent potentials of baryons which are then implemented in the UrQMD transport model. In contrast to previous studies, the same equation of state constrained from neutron star properties is also able to describe experimental observables in heavy ion reactions at the HADES experiment. Unlike many other approaches our results are not constraint to densities up to nuclear saturation or perturbative results which allows a continuous description of the equation of state over a large range in baryon density.
Forward citations
Cited by 2 Pith papers
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Locating the QCD critical point with neutron-star observations
Bayesian analysis of a hybrid holographic EOS with neutron-star constraints locates the QCD critical endpoint at μ≈626 MeV and T≈119 MeV and predicts a strong first-order deconfinement transition at zero temperature.
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Lattice QCD constraints on the critical point from an improved precision equation of state
An improved lattice QCD equation of state, combined with entropy contours continued from imaginary chemical potential, excludes a QCD critical point below μB = 450 MeV at 2σ confidence.
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