  We perform an ab-initio comparison between nonequilibrium dynamical
mean-field theory and optical lattice experiments by studying the time
evolution of double occupations in the periodically driven Fermi-Hubbard model.
For off-resonant driving, the range of validity of a description in terms of an
effective static Hamiltonian is determined and its breakdown due to energy
absorption close to resonance is demonstrated. For near-resonant driving, we
investigate the response to a change in driving amplitude and discover an
asymmetric excitation spectrum with respect to the detuning. In general, we
find good agreement between experiment and theory, which cross-validates the
experimental and numerical approaches in a strongly-correlated nonequilibrium
system.
