Dynamical vs. Equilibrium Properties of the QCD Phase Transition

We employ an Einstein-Maxwell-Dilaton (EMD) holographic model, which is known to be in good agreement with lattice results for the QCD equation of state with $(2+1)$ flavors and physical quark masses, to investigate the temperature and baryon chemical potential dependence of the susceptibilities, conductivities, and diffusion coefficients associated with baryon, electric, and strangeness conserved charges. We also determine how the bulk and shear viscosities of the plasma vary with increasing baryon density. The diffusion of conserved charges and the hydrodynamic viscosities in a baryon rich quark-gluon plasma are found to be suppressed with respect to the zero net baryon case. The transition temperatures associated with equilibrium and non-equilibrium quantities are determined as a function of the baryon chemical potential for the first time. Because of the crossover nature of the QCD phase transition even at moderately large values of the chemical potential, we find that the transition temperatures associated with different quantities are spread in the interval between $130-200$ MeV and they all decrease with increasing baryon chemical potential.

• Publication year

  2017

• Venue

  arXiv: High Energy Physics - Phenomenology

• Publication date

  2017-04-18

• Fields of study

  Physics

• Identifiers
  DOI 10.1103/PhysRevD.96.014032arXiv 1704.05558
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  Open on Semantic Scholar

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  Semantic Scholar

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• No concepts are published for this paper.

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