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 nonequilibrium 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.
Xianlong
Gao
G
Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang Province, 321004, China.
Polini
Marco
M
Rainis
Diego
D
Tosi
M P
MP
Vignale
G
G