Modified Bag Models for the Quark Gluon Plasma Equation of State
V.V. Begun, M.I. Gorenstein, O.A. Mogilevsky
TL;DR
This paper develops modified bag models for the quark-gluon plasma equation of state that align with lattice QCD results, suggesting a negative bag constant, and compares them quantitatively with high-temperature lattice data.
Contribution
It introduces modified bag models that better match lattice QCD results for the quark-gluon plasma EoS, including both pure gluodynamics and full QCD.
Findings
Modified models fit lattice data at high T
Negative bag constant B favored
Quantitative agreement with lattice results
Abstract
The modified versions of the bag model equation of state (EoS) are considered. They are constructed to satisfy the main qualitative features observed for the quark-gluon plasma EoS in the lattice QCD calculations. A quantitative comparison with the lattice results at high temperatures T are done in the SU(3) gluodynamics and in the full QCD with dynamical quarks. Our analysis advocates a negative value of the bag constant B.
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