Time-dependent current-density-functional theory of spin-charge separation and spin drag in one-dimensional ultracold Fermi gases

Abstract

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.

4+epsilon pages, 3 figures, submitted. High-quality figures can be requested to the authors

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Cited by in corpus (10)

• Charge and spin transport in strongly correlated one-dimensional quantum systems driven far from equilibrium
• Real-time spin-charge separation in one-dimensional Fermi gases from generalized hydrodynamics
• Lindblad equation approach to the optimal working point in nonequilibrium stationary states of an interacting electronic one-dimensional system: Application to the spinless Hubbard chain in the clean and in the weakly disordered limit
• Density-functional theory for the spin-1 bosons in a one-dimensional harmonic trap
• Effects of interaction and polarization on spin-charge separation: A time-dependent spin-density-functional theory study
• Component separation of two-component fermion clouds in a spin-dependent external potential by spin-density-functional theory
• Short-time Spin Dynamics in Strongly Correlated Few-fermion Systems
• Out-of-equilibrium dynamics of repulsive Fermi gases in quasi-periodic potentials: a Density Functional Theory study
• First-principles perspective on magnetic second sound
• Drag dynamics in one-dimensional Fermi systems