Discussion of Various Susceptibilities within Thermal and Dense Quantum Chromodynamics
XU Shu-Sheng1,5, SHI Yuan-Mei1,2, YANG You-Chang1,3, CUI Zhu-Fang1,5, ZONG Hong-Shi1,4,5**
1Department of Physics, Nanjing University, Nanjing 210093 2Department of Physics and Electronic Engineering, Nanjing Xiaozhuang University, Nanjing 211171 3School of Physics and Mechanical-Electrical Engineering, Zunyi Normal College, Zunyi 563002 4Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093 5State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Beijing 100190
It is commonly accepted that the system undergoes a crossover at high temperature and low chemical potential beyond the chiral limit case, and the properties of the crossover region are important for researchers to understand the nature of strong interacting matters of quantum chromodynamics (QCD). Since at present there is no exact order of parameters of the phase transitions beyond the chiral limit, QCD susceptibilities are widely used as indicators. In this work various susceptibilities are discussed in the framework of Dyson–Schwinger equations. The results show that different kinds of susceptibilities give the same critical end point, which is the bifurcation point of the crossover region and the first order phase transition line of QCD. Nevertheless, different pseudo-critical points are found in the temperature axis. We think that defining a critical band is more suitable in the crossover region.
(Quark deconfinement, quark-gluon plasma production, and phase transitions)
引用本文:
. [J]. 中国物理快报, 2015, 32(12): 121203-121203.
XU Shu-Sheng, SHI Yuan-Mei, YANG You-Chang, CUI Zhu-Fang, ZONG Hong-Shi. Discussion of Various Susceptibilities within Thermal and Dense Quantum Chromodynamics. Chin. Phys. Lett., 2015, 32(12): 121203-121203.
2015, Vol. 32 
