Two types of phase diagrams for two-species Bose-Einstein condensates and the combined effect of the parameters
文献类型：期刊论文
| 作者 | Bao, CG; Li, ZB; Liu, YM; Yao, DX; Bao, CG (reprint author), Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China. |
| 刊名 | JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS
 |
| 出版日期 | 2017 |
| 卷号 | 50期号:13页码:135301 |
| 关键词 | Two-species Bose-einstein Condensate Phase Diagrams For Two-species Condensates CombIned Effect Of The Parameters In Bec Evaluation Of The Parameters In Bec |
| DOI | http://dx.doi.org/10.1088/1361-6455/aa7440 |
| 英文摘要 | Under the Thomas-Fermi approximation, an approach is proposed to solve the coupled Gross-Pitaevskii equations (CGP) for the two-species Bose-Einstein condensate analytically. The essence of this approach is to find out the building blocks to build the solution. By introducing the weighted strengths, relatively simpler analytical solutions have been obtained. A number of formulae have been deduced to relate the parameters when the system is experimentally tuned at various status. These formulae demonstrate the combined effect of the parameters, and are useful for the evaluation of their magnitudes. The whole parameter space is divided into zones, where each supports a specific phase. All the boundaries separating these zones have analytical expressions. Based on the division, the phase diagrams against any set of parameters can be plotted. In addition, by introducing a model for the asymmetric states, the total energies of the lowest symmetric and asymmetric states have been compared. Thereby, in which case the former will be replaced by the latter has been evaluated. The CGP can be written in a matrix form. For repulsive inter-species interaction V-AB, when the parameters vary and cross over the singular point of the matrix, a specific state transition will happen and the total energy of the lowest symmetric state will increase remarkably. This provides an excellent opportunity for the lowest asymmetric state to emerge as the ground state. For attractive V-AB, when the parameters tend to a singular point, the system will tend to collapse. The effects caused by the singular points have been particularly studied. |
| 学科主题 | Optics ; Physics |
| 语种 | 英语 |
| 源URL | [http://ir.itp.ac.cn/handle/311006/22013]  |
| 专题 | 理论物理研究所_理论物理所1978-2010年知识产出 |
| 通讯作者 | Bao, CG (reprint author), Sun Yat Sen Univ, Sch Phys, State Key Lab Optoelect Mat & Technol, Guangzhou 510275, Guangdong, Peoples R China. |
| 推荐引用方式 GB/T 7714 | Bao, CG,Li, ZB,Liu, YM,et al. Two types of phase diagrams for two-species Bose-Einstein condensates and the combined effect of the parameters[J]. JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,2017,50(13):135301. |
| APA | Bao, CG,Li, ZB,Liu, YM,Yao, DX,&Bao, CG .(2017).Two types of phase diagrams for two-species Bose-Einstein condensates and the combined effect of the parameters.JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS,50(13),135301. |
| MLA | Bao, CG,et al."Two types of phase diagrams for two-species Bose-Einstein condensates and the combined effect of the parameters".JOURNAL OF PHYSICS B-ATOMIC MOLECULAR AND OPTICAL PHYSICS 50.13(2017):135301. |
入库方式： OAI收割
来源：理论物理研究所
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