Speed of sound in the QGP and an SU(3) Yang-Mills theory

2018/06/30 by Z. V. Khaidukov, Z. V Khaidukov, М. С. Лукашов +2
Mathematics · Physics and Astronomy · #Combinatorics #Discontinuity (linguistics) #Gauge theory #High-Energy Particle Collisions Research #Lattice (music) #Lattice QCD #Lattice field theory #Loop (graph theory) #Magnetic field #Mathematical analysis #Mathematical physics #Mathematics #Particle physics #Particle physics theoretical and experimental studies #Physics #Quantum Chromodynamics and Particle Interactions #Quantum chromodynamics #Quantum electrodynamics #Quantum mechanics #Speed of sound #Yang–Mills existence and mass gap #hep-ph

paper · pdf · doi:10.1103/physrevd.98.074031

published as Phys. Rev. D 98, 074031 (2018) · 10 pages, 3 figures

arxiv created 2018/07/09 · openalex publication_date 2018/10/31 · arxiv updated 2018/11/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05

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 color 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_s² never exceeds (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.

Citations

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