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arXiv · 1806.09407

The speed of sound in QGP and SU(3) Yang-Mills theory

Z. V Khaidukov·M. S Lukashov·Yu. A. Simonov
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Abstract

The speed of sound $C_{s}$ 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 $C_{s}$ displays a discontinuity at $T=T_{c}$ in the SU(3) case. It is shown numerically and analytically that $ C^{2}_{s}$ never exceeds $\frac{1}{3}$ 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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Z. V Khaidukov, M. S Lukashov, Yu. A. Simonov. 2018-07-09. The speed of sound in QGP and SU(3) Yang-Mills theory. https://doi.org/10.1103/physrevd.98.074031

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