Ground-state ferromagnetic transition in strongly repulsive one-dimensional Fermi gases

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	Ground-state ferromagnetic transition in strongly repulsive one-dimensional Fermi gases
	Cui, XL ; Ho, TL
刊名	PHYSICAL REVIEW A
	2014
卷号	89 期号:2
ISSN号	1050-2947
通讯作者	Cui, XL (reprint author), Tsinghua Univ, Inst Adv Study, Beijing 100084, Peoples R China.
中文摘要	We prove that as a one-dimensional Fermi gas is brought across the resonance adiabatically from large repulsion to large attraction, the singlet ground state will give way to the maximum spin state, which is the lowest energy state among the states accessible to the system in this process. In the presence of tiny symmetry-breaking fields that destroy spin conservation, the singlet ground state can evolve to the ferromagnetic state or a spin segregated state. We have demonstrated these effects by exact calculations on fermion cluster relevant to current experiments, and have worked out the quantum-mechanical wave function that exhibits phase separation.
资助信息	NSFC [11104158, 11374177]; DARPA under the Army Research Office [W911NF-07-1-0464, W911NF0710576]
语种	英语
公开日期	2015-04-14
内容类型	期刊论文
源URL	[http://ir.iphy.ac.cn/handle/311004/59480]
专题	物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文
推荐引用方式 GB/T 7714	Cui, XL,Ho, TL. Ground-state ferromagnetic transition in strongly repulsive one-dimensional Fermi gases[J]. PHYSICAL REVIEW A,2014,89(2).
APA	Cui, XL,&Ho, TL.(2014).Ground-state ferromagnetic transition in strongly repulsive one-dimensional Fermi gases.PHYSICAL REVIEW A,89(2).
MLA	Cui, XL,et al."Ground-state ferromagnetic transition in strongly repulsive one-dimensional Fermi gases".PHYSICAL REVIEW A 89.2(2014).