Drag force on a moving impurity in a spin-orbit-coupled Bose-Einstein condensate
文献类型：期刊论文
| 作者 | He, PS ; Zhu, YH ; Liu, WM |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2014 |
| 卷号 | 89期号:5 |
| ISSN号 | 1050-2947 |
| 通讯作者 | He, PS (reprint author), Beijing Technol & Business Univ, Sch Sci, Beijing 100048, Peoples R China. |
| 中文摘要 | We investigate the drag force on a moving impurity in a spin-orbit-coupled Bose-Einstein condensate. We prove rigorously that the superfluid critical velocity is zero when the impurity moves in all directions but one, in contrast to the case of liquid helium and superconductor, where it is finite in all directions. We also find that when the impurity moves in all directions except the two special ones, the drag force has nonzero transverse component with a small velocity. When the velocity becomes large and the states of the upper band are also excited, the transverse force becomes very small due to opposite contributions of the two bands. The characteristics of the superfluid critical velocity and the transverse force are results of the order-by-disorder mechanism in spin-orbit-coupled boson systems. |
| 资助信息 | National Key Basic Research Special Foundation of China (NKBRSFC) [2011CB921502, 2012CB821305]; National Natural Science Foundation of China (NSFC) [61227902, 61378017, 11174020, 11075176]; Beijing Natural Science Foundation (BNSF) [2102014, 1112007]; Starting up Foundation for Youth Teachers of Beijing Technology and Business University [QNJJ20123-19, QNJJ2012-33]; State Education Ministry [2011D005003000012, PXM2013-014213-000013]; Importation and Development of High-Caliber Talents Project of Beijing Municipal Institutions [CITTCD201404030] |
| 语种 | 英语 |
| 公开日期 | 2015-04-14 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/59475]  |
| 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 | He, PS,Zhu, YH,Liu, WM. Drag force on a moving impurity in a spin-orbit-coupled Bose-Einstein condensate[J]. PHYSICAL REVIEW A,2014,89(5). |
| APA | He, PS,Zhu, YH,&Liu, WM.(2014).Drag force on a moving impurity in a spin-orbit-coupled Bose-Einstein condensate.PHYSICAL REVIEW A,89(5). |
| MLA | He, PS,et al."Drag force on a moving impurity in a spin-orbit-coupled Bose-Einstein condensate".PHYSICAL REVIEW A 89.5(2014). |
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来源：物理研究所
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