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QCD susceptibilities in the presence of the chiral chemical potential

Run-Lin Liu

Department of Physics, Nanjing University, Nanjing 210093, P. R. China

E-mail Address: phyrunlin@smail.nju.edu.cn

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and

Hong-Shi Zong

Department of Physics, Nanjing University, Nanjing 210093, P. R. China

Joint Center for Particle, Nuclear Physics and Cosmology, Nanjing 210093, P. R. China

E-mail Address: zonghs@nju.edu.cn

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https://doi.org/10.1142/S0217732320501370Cited by:1 (Source: Crossref)

Abstract

In this paper, chiral chemical potential $μ_{5}$ is introduced to investigate the QCD susceptibilities and chiral phase transition within the Polyakov-loop-extended Nambu–Jona-Lasinio models in the mean-field approximation. We concentrate on the effect of chiral chemical potential on the phase diagram and the QCD susceptibilities. Moreover, it is worth noting that chiral chemical potential has more and more prominent impact on the susceptibilities and the phase diagram with the decrease of temperature based on our results, which coincides with the prediction that the chiral symmetry is dynamically broken in the first-order phase transition region and gets partly restored in the crossover region.

Keywords:

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