Time-Dependent Current-Density-Functional Theory of Spin-Charge Separation and Spin Drag in One-Dimensional Ultracold Fermi Gases

Gao Xianlong, Marco Polini, Diego Rainis, M. P. Tosi, and G. Vignale
Phys. Rev. Lett. 101, 206402 – Published 13 November 2008

Abstract

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.

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  • Received 9 April 2008

DOI:https://doi.org/10.1103/PhysRevLett.101.206402

©2008 American Physical Society

Authors & Affiliations

Gao Xianlong1, Marco Polini2,*, Diego Rainis2, M. P. Tosi2, and G. Vignale3

  • 1Department of Physics, Zhejiang Normal University, Jinhua, Zhejiang Province, 321004, China
  • 2NEST-CNR-INFM and Scuola Normale Superiore, I-56126 Pisa, Italy
  • 3Department of Physics and Astronomy, University of Missouri, Columbia, Missouri 65211, USA

  • *m.polini@sns.it

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Vol. 101, Iss. 20 — 14 November 2008

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