Exponential approach to the hydrodynamic attractor in Yang-Mills kinetic theory

We use principal component analysis to study the hydrodynamic attractor in Yang-Mills kinetic theory undergoing Bjorken expansion with Color Glass Condensate initial conditions. The late time is characterized by a single determining overall energy scale. How it reached governed disappearance of subleading characterizing deviations pressure anisotropy, screening mass and scattering rate. find that for wide range couplings approach at times well described an exponential. Its decay rate dependence on coupling turns out translate into simple shear viscosity entropy density ratio.