The speed of sound in QGP and SU(3) Yang-Mills theory
Abstract
The speed of sound Cs in the SU(3) and (2+1)QCD is calculated within the Field Correlator Method using the nonperturbative colour magnetic confinement and Polyakov loop interaction in the deconfined region.The resulting Cs displays a discontinuity at T=Tc in the SU(3) case. It is shown numerically and analytically that C2s never exceeds 13 both for SU(3) and (2+1) QCD for vanishing chemical potential.A good agreement is found of our numerical results with the corresponding lattice data.
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