Entropy Production, Hydrodynamics, and Resurgence in the Primordial
  Quark-Gluon Plasma from Holography
  Microseconds after the Big Bang quarks and gluons formed a strongly-coupled
non-conformal liquid driven out-of-equilibrium by the expansion of the
Universe. We use holography to determine the non-equilibrium behavior of this
liquid in a Friedmann-Lemaitre-Robertson-Walker Universe and develop an
expansion for the corresponding entropy production in terms of the derivatives
of the cosmological scale factor. We show that the resulting series has zero
radius of convergence and we discuss its resurgent properties. Finally, we
compute the resummed entropy production rate in de Sitter Universe at late
times and show that the leading order approximation given by bulk viscosity
effects can strongly overestimate/underestimate the rate depending on the
microscopic parameters.
