Spin-orbit-coupled one-dimensional Fermi gases with infinite repulsion
文献类型：期刊论文
| 作者 | Cui, XL ; Ho, TL |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:1 |
| ISSN号 | 1050-2947 |
| 通讯作者 | Cui, XL (reprint author), Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | The current efforts of studying many-body effects with spin-orbit coupling (SOC) using alkali-metal atoms are impeded by the heating effects due to spontaneous emission. Here, we show that even for SOCs too weak to cause any heating, dramatic many-body effects can emerge in a one-dimensional (1D) spin-1/2 Fermi gas provided the interaction is sufficiently repulsive. For weak repulsion, the effect of a weak SOC (with strength Omega) is perturbative, inducing a weak spin spiral (with magnitude proportional to Omega). However, as the repulsion g increases beyond a critical value (g(c) similar to 1/Omega), the magnitude of the spin spiral rises rapidly to a value of order 1 (independent of Omega). Moreover, near g = +infinity, the spins of neighboring fermions can interfere destructively due to quantum fluctuations of particle motion, strongly distorting the spin spiral and pulling the spins substantially away from the direction of the local field at various locations. These effects are consequences of the spin-charge separation in the strongly repulsive limit. They will also occur in other 1D quantum gases with higher spins. |
| 资助信息 | NSFC [11104158, 11374177]; Chinese Academy of Sciences; DARPA under the Army Research Office [W911NF-07-1-0464, W911NF0710576] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59482]  |
| 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. Spin-orbit-coupled one-dimensional Fermi gases with infinite repulsion[J]. PHYSICAL REVIEW A,2014,89(1). |
| APA | Cui, XL,&Ho, TL.(2014).Spin-orbit-coupled one-dimensional Fermi gases with infinite repulsion.PHYSICAL REVIEW A,89(1). |
| MLA | Cui, XL,et al."Spin-orbit-coupled one-dimensional Fermi gases with infinite repulsion".PHYSICAL REVIEW A 89.1(2014). |
入库方式： OAI收割
来源：物理研究所
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