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

References in corpus (5)

• Many-Body Physics with Ultracold Gases
• Spin-charge separation in cold Fermi-gases: a real time analysis
• Spin Drag and Spin-Charge Separation in Cold Fermi Gases
• Charge and spin dynamics of interacting Fermions in a one dimensional harmonic trap
• Spin-drag relaxation time in one-dimensional spin-polarized Fermi gases