Collective excitations in one-dimensional ultracold Fermi gases: Comparative study

被引：1

作者：

Wei Li ^{[1
]}

Gao Xianlong ^{[1
]}

Kollath, Corinna ^{[2
]}

Polini, Marco ^{[1
,3
,4
]}

机构：

[1] Zhejiang Normal Univ, Dept Phys, Jinhua 321004, Zhejiang, Peoples R China

[2] Ecole Polytech, Ctr Phys Theor, F-91128 Palaiseau, France

[3] NEST CNR INFM, I-56126 Pisa, Italy

[4] Scuola Normale Super Pisa, I-56126 Pisa, Italy

来源：

PHYSICAL REVIEW B | 2008年 / 78卷 / 19期

关键词：

density functional theory; exchange interactions (electron); fermion systems; many-body problems; renormalisation;

D O I：

10.1103/PhysRevB.78.195109

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Time-dependent density-functional theory (TDDFT) is a powerful tool in studying the nonequilibrium dynamics of inhomogeneous interacting many-body systems. Here we show that the simple adiabatic local-spin-density approximation for the time-dependent exchange-correlation potential is surprisingly accurate in describing collective density and spin dynamics in strongly correlated one-dimensional ultracold Fermi gases. Our conclusions are based on extensive comparisons between our TDDFT results and accurate results based on the adaptive time-dependent density-matrix renormalization-group method.

引用

页数：9

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