Fermi super-Tonks-Girardeau state for attractive Fermi gases in an optical lattice
文献类型：期刊论文
| 作者 | Wang, L ; Xu, ZH ; Chen, S |
| 刊名 | EUROPEAN PHYSICAL JOURNAL D
 |
| 出版日期 | 2012 |
| 卷号 | 66期号:10 |
| 关键词 | HUBBARD-MODEL DIMENSION |
| ISSN号 | 1434-6060 |
| 通讯作者 | Wang, L: Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We demonstrate that a kind of highly excited state of strongly attractive Hubbard model, named of Fermi super-Tonks-Girardeau state, can be realized in the spin-1/2 Fermi optical lattice system by a sudden switch of interaction from the strongly repulsive regime to the strongly attractive regime. In contrast to the ground state of the attractive Hubbard model, such a state is the lowest scattering state with no pairing between attractive fermions. With the aid of Bethe-ansatz method, we calculate energies of both the Fermi Tonks-Girardeau gas and the Fermi super-Tonks-Girardeau state of spin-1/2 ultracold fermions and show that both energies approach to the same limit as the strength of the interaction goes to infinity. By exactly solving the quench dynamics of the Hubbard model, we demonstrate that the Fermi super-Tonks-Girardeau state can be transferred from the initial repulsive ground state very efficiently. This allows the experimental study of properties of Fermi super-Tonks-Girardeau gas in optical lattices. |
| 收录类别 | SCI |
| 资助信息 | NSF of China [10974234, 11174360]; National Program for Basic Research of MOST; 973 grant |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38076]  |
| 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 | Wang, L,Xu, ZH,Chen, S. Fermi super-Tonks-Girardeau state for attractive Fermi gases in an optical lattice[J]. EUROPEAN PHYSICAL JOURNAL D,2012,66(10). |
| APA | Wang, L,Xu, ZH,&Chen, S.(2012).Fermi super-Tonks-Girardeau state for attractive Fermi gases in an optical lattice.EUROPEAN PHYSICAL JOURNAL D,66(10). |
| MLA | Wang, L,et al."Fermi super-Tonks-Girardeau state for attractive Fermi gases in an optical lattice".EUROPEAN PHYSICAL JOURNAL D 66.10(2012). |
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来源：物理研究所
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