Time-dependent current-density-functional theory of spin-charge   separation and spin drag in one-dimensional ultracold Fermi gases
  Motivated by the large interest in the non-equilibrium dynamics of low-dimensional quantum many-body systems, we present a fully-microscopic theoretical and numerical study of the "charge" and "spin" dynamics in a one-dimensional ultracold Fermi gas following a quench. Our approach, which is based on time-dependent current-density-functional theory, is applicable well beyond the linear-response regime and produces both spin-charge separation and spin-drag-induced broadening of the spin packets. 
Gao Xianlong, Marco Polini, Diego Rainis, M.P. Tosi, G. Vignale