  Dynamics of strongly interacting Fermi gases, consisting of a 50-50 mixture
of two different fermionic species, is investigated. For the equation of state
we consider a Pad\'{e} [2/2] approximations, which gives the weak-coupling
perturbative formula (up to 4th order) in the low density regime, the
unitary-limit Monte Carlo result in the high density regime, and reproduces the
4-fermion prediction for dimer-dimer scattering length in the BEC region. We
use a time-dependent LDA to derive various properties of the Fermi gas under a
harmonic confinement and compare them with the data of very recent experiments
of 6Li atoms across a Feshbach resonance.
