This paper proposes an intermediate SQGB phase in which quark degrees of freedom are liberated while gluons remain bound in glueballs until about 285 MeV.
Matching the Hagedorn mass spectrum with Lattice QCD results
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abstract
Based on recent Lattice QCD (LQCD) results obtained at finite temperature, we discuss modeling of the hadronic phase of QCD in the framework of Hadron Resonance Gas (HRG) with discrete and continuous mass spectra. We focus on fluctuations of conserved charges, and show how a common limiting temperature can be used to constrain the Hagedorn exponential mass spectrum in different sectors of quantum number, through a matching of HRG and LQCD. For strange baryons, the extracted spectra are found to be consistent with all known and expected states listed by the Particle Data Group (PDG). The strange-mesonic sector, however, requires additional states in the intermediate mass range beyond that embodied in the database.
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A New State of Matter between the Hadronic Phase and the Quark-Gluon Plasma?
This paper proposes an intermediate SQGB phase in which quark degrees of freedom are liberated while gluons remain bound in glueballs until about 285 MeV.