  We study the dynamics of a strongly-coupled quantum field theory in a
cosmological spacetime using the holographic AdS/CFT correspondence.
Specifically we consider a confining gauge theory in an expanding FRW universe
and track the evolution of the stress-energy tensor during a period of
expansion, varying the initial temperature as well as the rate and amplitude of
the expansion. At strong coupling, particle production is inseparable from
entropy production. As a result, we find significant qualitative differences
from the weak coupling results: at strong coupling the system rapidly loses
memory of its initial state as the amplitude is increased. Furthermore, in the
regime where the Hubble parameter is parametrically smaller than the initial
temperature, the dynamics is well modelled as a plasma evolving
hydrodynamically towards equilibrium.
