Thermodynamics of quark-gluon plasma at finite baryon density

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.

Comments: 18 pages,7 figures. arXiv admin note: substantial text overlap with arXiv:1811.08970