Similarity between the kinematic viscosity of quark-gluon plasma and liquids at the viscosity minimum

Recently, it has been found that the kinematic viscosity of liquids at the minimum, $\nu_m$, can be expressed in terms of fundamental physical constants, giving $\nu_m$ on the order of $10^{-7}~{\rm m^2/s}$. Here, we show that the kinematic viscosity of quark-gluon plasma (QGP) has the same value and support this finding by experimental data and theoretical estimations. We discuss the implications of this result for understanding the QGP including the similarity of its shear flow with that in liquids at the viscosity minimum and propose that the QGP is close to the dynamical crossover. Our results provide quantitative evidence for the universality of the shear diffusivity proposed earlier.