arXiv:1711.07283·v1·Nuclear Theory
Evidence of the QCD tricritical endpoint existence at NICA-FAIR energies
K. A. Bugaev🇺🇦 · R. Emaus🇳🇴 · V. V. Sagun🇺🇦 · A. I. Ivanytskyi🇺🇦 · L. V. Bravina🇳🇴 · D. B. Blaschke🇵🇱 · E. G. Nikonov🇷🇺 · A. V. Taranenko🇷🇺 · E. E. Zabrodin🇳🇴 · G. M. Zinovjev🇺🇦
Abstract
We present a summary of possible signals of the chiral symmetry restoration and deconfinement phase transitions which may be, respectively, probed at the center of mass collision energies at 4.3-4.9 GeV and above 8.7-9.2 GeV. It is argued that these signals may evidence for an existence of the tricritical endpoint of QCD phase diagram at the collision energy around 8.7-9.2 GeV. The equation of state of hadronic matter with the restored chiral symmetry is discussed and the number of bosonic and fermionic degrees of freedom is found.
Comments: 5 pages