Chiral phase transition at finite chemical potential in 2+1-flavor soft-wall AdS/QCD

Abstract

The phase transition from hadronic matter to chirally-symmetric quark-gluon plasma is expected to be a rapid crossover at zero quark chemical potential ($\mu$), becoming first order at some finite value of $\mu$, indicating the presence of a critical point. Using a three-flavor soft-wall model of AdS/QCD, we investigate the effect of varying the light and strange quark masses on the order of the chiral phase transition. At zero quark chemical potential, we reproduce the Columbia Plot, which summarizes the results of lattice QCD and other holographic models. We then extend this holographic model to examine the effects of finite quark chemical potential. We find that the the chemical potential does not affect the critical line that separates first-order from rapid crossover transitions. This excludes the possibility of a critical point in this model, suggesting that a different setup is necessary to reproduce all the features of the QCD phase diagram.

14 pages, 7 figures

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Cited by in corpus (13)

• Gluodynamics and deconfinement phase transition under rotation from holography
• Critical exponents of finite temperature chiral phase transition in soft-wall AdS/QCD models
• Chiral phase transition and QCD phase diagram from AdS/QCD
• Chiral Phase Transition with 2+1 quark flavors in an improved soft-wall AdS/QCD Model
• Thermal properties of light mesons from holography
• Pion quasiparticles and QCD phase transitions at finite temperature and isospin density from holography
• A holographic study on QCD phase transition and phase diagram with two flavors
• Pion condensation in a soft-wall AdS/QCD model
• Thermalization and prethermalization in the soft-wall AdS/QCD model
• Octet meson spectra and chiral phase diagram in the improved soft-wall AdS/QCD model
• Correlations between the deconfining and chiral transitions in holographic QCD
• Probing the chiral and $U(1)$ axial symmetry restoration via meson susceptibilities in holographic QCD
• Chiral Condensation and Chiral Phase Diagram under Combined Rotation and Chemical Potential in Holographic QCD