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QCD phase diagram with the improved Polyakov loop effective potential

Oct 31, 2016

Part of Proceedings, 5th International Workshop on Nuclear Dynamics in Heavy-Ion Reactions (IWND2016) : Xinxiang, Henan, China, May 15-20, 2016, 151

Published in:

Nucl.Sci.Tech. 27 (2016) 6, 151

Contribution to:

- IWND2016
, 151

Published: Oct 31, 2016

DOI:

10.1007/s41365-016-0152-0

reference search3 citations

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Abstract: (Springer)

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.

QCD phase diagram
Chiral symmetry
Confinement–deconfinement phase transition
quantum chromodynamics: critical phenomena
Jona-Lasinio-Nambu model: Polyakov loop
back reaction: quantum
potential: dependence
quark gluon: matter
potential: chemical
temperature: low

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