一维超冷费米气体中自旋-电荷分离和自旋拖曳的含时电流-密度泛函理论
Time-dependent current-density-functional theory of spin-charge separation and spin drag in one-dimensional ultracold Fermi gases
摘要：
基于对低维量子多体系统非平衡动力学研究的极大兴趣，本文对一维超冷费米气体在猝灭后的“电荷”和“自旋”动力学进行了全微观的理论和数值研究.我们的方法，这是基于随时间变化的电流密度泛函理论，是适用的，远远超出了线性响应制度，并产生自旋-电荷分离和自旋-阻力诱导的自旋包加宽。
英文摘要：
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.
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