Three outstanding phenomena along the critical line in the QCD phase diagram are discussed: (a) the crossover transition at zero chemical potential, (b) the critical fluctuations at the QCD critical point and (c) the development of viscosity in the net-baryon fluid, near the critical temperature. Signatures of these phenomena in high-energy experiments with nuclei, are also discussed.
DOI: https://doi.org/10.22323/1.292.0052
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