Nuclear Science and Techniques

《核技术》(英文版) ISSN 1001-8042 CN 31-1559/TL     2019 Impact factor 1.556

Nuclear Science and Techniques ›› 2016, Vol. 27 ›› Issue (6): 151 doi: 10.1007/s41365-016-0152-0

Special Issue: Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016)

• Special Section on International Workshop on Nuclear Dynamics in Heavy-Ion Reaction (IWND2016) • Previous Articles     Next Articles

QCD phase diagram with the improved Polyakov loop effective potential

Guo-Yun Shao, Xue-Yan Gao, Zhan-Duo Tang, Ning Gao   

  1. Department of Applied Physics, Xi’an Jiaotong University, Xi’an 710049, China
  • Contact: Guo-Yun Shao E-mail:gyshao@mail.xjtu.edu.cn
  • Supported by:

    This work was supported by the National Natural Science Foundation of China (No. 11305121), the Specialized Research Fund for the Doctoral Program of Higher Education (No. 20130201120046), the Natural Science Basic Research Plan in Shanxi Province of China (No. 2014JQ1012) and the Fundamental Research Funds for the Central Universities.

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Guo-Yun Shao, Xue-Yan Gao, Zhan-Duo Tang, Ning Gao. QCD phase diagram with the improved Polyakov loop effective potential.Nuclear Science and Techniques, 2016, 27(6): 151     doi: 10.1007/s41365-016-0152-0

Abstract:

We report our recent progress on the QCD phase structure. We explore the properties of quark–gluon matter in the improved Polyakov–Nambu–Jona–Lasinio (PNJL) model by introducing a chemical potential-dependent Polyakov loop potential. This treatment effectively reflects the quantum backreaction of matter sector to glue sector at nonzero chemical potential. Compared with the original PNJL model, a superiority of the improved PNJL model is that it can effectively describe the confinement–deconfinement transition at low temperature and high density. And the QCD phase diagram will be modified to a certain degree if the strength of the quantum backreaction of matter sector to glue sector is strong. One evident variation is that the region of quarkyonic phase will be greatly reduced in the improved PNJL model. This means that the modification to the Polyakov loop potential with the chemical potential dependence is possibly a significant improvement in exploring the full QCD phase structure.

Key words: QCD phase diagram, Chiral symmetry, Confinement–deconfinement phase transition