  Spin-charge separation (SCS) is a striking manifestation of strong
correlations in low-dimensional quantum systems, whereby a fermion splits into
separate spin and charge excitations that travel at different speeds. Here, we
demonstrate that periodic driving enables control over SCS in a Hubbard system
near half-filling. In one dimension, we predict analytically an exotic regime
where charge travels slower than spin and can even become 'frozen', in
agreement with numerical calculations. In two dimensions, the driving slows
both charge and spin, and leads to complex interferences between
single-particle and pair-hopping processes.
