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题名: Mean-field study of itinerant ferromagnetism in trapped ultracold Fermi gases: Beyond the local-density approximation
作者: Dong, H. ;  Hu, Hui ;  Liu, Xia-Ji ;  Drummond, Peter D.
刊名: PHYSICAL REVIEW A
出版日期: 2010
卷号: 82, 期号:1, 页码:-
学科分类: Physics
通讯作者: Dong, H , Swinburne Univ Technol, ARC Ctr Excellence Quantum Atom Opt, Ctr Atom Opt & Ultrafast Spect, Melbourne, Vic 3122, Australia
部门归属: [Dong, H; Hu, H; Liu, XJ; Drummond, PD] Swinburne Univ Technol, ARC Ctr Excellence Quantum Atom Opt, Ctr Atom Opt & Ultrafast Spect, Melbourne, Vic 3122, Australia; [Dong, H] Chinese Acad Sci, Inst Theoret Phys, Beijing 100190, Peoples R China
英文摘要: We theoretically investigate the itinerant ferromagnetic transition of a spherically trapped ultracold Fermi gas with spin imbalance under strongly repulsive interatomic interactions. Our study is based on a self-consistent solution of the Hartree-Fock mean-field equations beyond the widely used local-density approximation. We demonstrate that, while the local-density approximation holds in the paramagnetic phase, after the ferromagnetic transition it leads to a quantitative discrepancy in various thermodynamic quantities even with large atom numbers. We determine the position of the phase transition by monitoring the shape change of the free-energy curve with increasing the polarization at various interaction strengths.
资助者: ARC[DP0984522, DP0984637]; NSFC[NSFC-10774190]; NFRPC[2006CB921404, 2006CB921306]; Australian Research Council (ARC) Centre of Excellence for Quantum-Atom Optics
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000280173500003
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/5074
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Dong, H.,Hu, Hui,Liu, Xia-Ji,et al. Mean-field study of itinerant ferromagnetism in trapped ultracold Fermi gases: Beyond the local-density approximation[J]. PHYSICAL REVIEW A,2010,82(1):-.
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