  We develop a time-dependent mean-field theory to investigate the released
momentum distribution and the released energy of an ultracold Fermi gas in the
BCS-BEC crossover after the scattering length has been set to zero by a fast
magnetic-field ramp. For a homogeneous gas we analyze the non-equilibrium
dynamics of the system as a function of the interaction strength and of the
ramp speed. For a trapped gas the theoretical predictions are compared with
experimental results.
