Quasispin model for macroscopic quantum tunneling between two coupled Bose-Einstein condensates
文献类型：期刊论文
| 作者 | Lee, C; Hai, WH; Luo, XL; Shi, L; Gao, KL |
| 刊名 | PHYSICAL REVIEW A
 |
| 出版日期 | 2003-11-01 |
| 卷号 | 68期号:5 |
| 英文摘要 | The system of two coupled Bose-Einstein condensates is mapped onto a uniaxial spin with an applied magnetic field. The mean-field interaction, the coupling, and the asymmetry or the detuning correspond to the anisotropy, the transverse field, and the longitudinal field, respectively. A generalized Bloch equation is derived. In the low barrier limit for the quasispin model, the tunneling rate is analyzed with an imaginary-time path-integral method. The dependence of the tunneling rate on the system parameters is obtained. The crossover temperature T-c from the thermal regime to the quantum regime is estimated. Below T-c quantum tunneling prevails, otherwise thermal activation dominates. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Optics ; Physics, Atomic, Molecular & Chemical |
| 研究领域[WOS] | Optics ; Physics |
| 关键词[WOS] | FERROMAGNETIC PARTICLES ; ESCAPE RATE ; INTERFERENCE ; STATES ; SYSTEM ; OSCILLATIONS ; MAGNETIZATION ; TRANSITIONS ; DYNAMICS ; DOMAINS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000186970900086 |
| 公开日期 | 2015-12-08 |
| 源URL | [http://ir.wipm.ac.cn/handle/112942/8846]  |
| 专题 | 武汉物理与数学研究所_2011年以前论文发表（包括2011年） |
| 作者单位 | 1.Chinese Acad Sci, Wuhan Inst Phys & Math, Wuhan 430071, Peoples R China 2.Max Planck Inst Phys Comples Syst, D-01187 Dresden, Germany 3.Hunan Normal Univ, Dept Phys, Changsha 410081, Peoples R China |
| 推荐引用方式 GB/T 7714 | Lee, C,Hai, WH,Luo, XL,et al. Quasispin model for macroscopic quantum tunneling between two coupled Bose-Einstein condensates[J]. PHYSICAL REVIEW A,2003,68(5). |
| APA | Lee, C,Hai, WH,Luo, XL,Shi, L,&Gao, KL.(2003).Quasispin model for macroscopic quantum tunneling between two coupled Bose-Einstein condensates.PHYSICAL REVIEW A,68(5). |
| MLA | Lee, C,et al."Quasispin model for macroscopic quantum tunneling between two coupled Bose-Einstein condensates".PHYSICAL REVIEW A 68.5(2003). |
入库方式： OAI收割
来源：武汉物理与数学研究所
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