Abstract
Properties of the quark-gluon plasma(QGP) in the presence of the baryon chemical potential $\mu_B$ are studied using the Field Correlator Method(FCM). The nonperturbative FCM dynamics includes the Polyakov line, computed via colorelectric string tension $\sigma^E(T)$ and the quark and gluon Debye masses, defined by the colormagnetic string tension $\sigma^H(T)$. The resulting QGP thermodynamics at $\mu_B \le 400$ MeV is in a good agreement with the available lattice data,both pressure and the sound velocity do not show any sign of a critical behavior in this region.
Highlights
The main result of heavy ion experiments, performed over the last 15 years at the Relativistic Heavy Ion Collider (RHIC) and at the LHC, is the discovery of a new form of matter [1,2,3,4,5] with its properties markedly different from the pre–RHIC era predictions; see Refs. [6,7,8,9,10,11,12,13,14,15] and references therein
The exploited form of the Polyakov line LFCM is shown in Fig. 1 together with the dark region LHLðTÞ derived from the quark condensate
The present paper is devoted to the effects of small baryon chemical potential μB ≤ 400 MeV in the dynamics of quark-gluon plasma (QGP)
Summary
The main result of heavy ion experiments, performed over the last 15 years at the Relativistic Heavy Ion Collider (RHIC) and at the LHC, is the discovery of a new form of matter [1,2,3,4,5] with its properties markedly different from the pre–RHIC era predictions; see Refs. [6,7,8,9,10,11,12,13,14,15] and references therein. The matter created in heavy ion collisions should be described by the fundamental laws of QCD For these reasons, the dynamics and thermodynamics of QCD at finite temperatures is the focus of numerous investigations. The question about the structure of the QCD phase diagram at nonzero baryon density remains open This happens mostly because lattice methods are strongly restricted to a domain of small chemical potentials (Nc 1⁄4 3) due to the “sign problem.”.
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