Variational Monte Carlo analysis of Bose-Einstein condensation in a two-dimensional trap
文献类型：期刊论文
| 作者 | Zheng Rong-Jie; Jin Jing; Tang Yi |
| 刊名 | CHINESE PHYSICS
 |
| 出版日期 | 2006-09-01 |
| 卷号 | 15页码:1960-1964 |
| 关键词 | Bose-Einstein condensation variational Monte Carlo method two-dimensional trap |
| ISSN号 | 1009-1963 |
| 英文摘要 | The ground-state properties of a system with a small number of interacting bosons over a wide range of densities are investigated. The system is confined in a two-dimensional isotropic harmonic trap, where the interaction between bosons is treated as a hard-core potential. By using variational Monte Carlo method, we diagonalize the one-body density matrix of the system to obtain the ground-state energy, condensate wavefunction and the condensate fraction. We find that in the dilute limit the depletion of central condensate in the 2D system is larger than in a 3D system for the same interaction strength; however as the density increases, the depletion at the centre of 2D trap will be equal to or even lower than that at the centre of 3D trap, which is in agreement with the anticipated in Thomas-Fermi approximation. In addition, in the 2D system the total condensate depletion is still larger than in a 3D system for the same scattering length. |
| WOS关键词 | NONLINEAR SCHRODINGER-EQUATION ; ATOMIC-HYDROGEN ; NEUTRAL ATOMS ; HARMONIC TRAP ; 2 DIMENSIONS ; GAS ; BOSONS |
| WOS研究方向 | Physics |
| 语种 | 英语 |
| WOS记录号 | WOS:000240273700010 |
| 出版者 | IOP PUBLISHING LTD |
| 源URL | [http://119.78.100.186/handle/113462/26263]  |
| 专题 | 中国科学院近代物理研究所 |
| 通讯作者 | Tang Yi |
| 作者单位 | Xiangtan Univ, Inst Modern Phys, Xiangtan 411105, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zheng Rong-Jie,Jin Jing,Tang Yi. Variational Monte Carlo analysis of Bose-Einstein condensation in a two-dimensional trap[J]. CHINESE PHYSICS,2006,15:1960-1964. |
| APA | Zheng Rong-Jie,Jin Jing,&Tang Yi.(2006).Variational Monte Carlo analysis of Bose-Einstein condensation in a two-dimensional trap.CHINESE PHYSICS,15,1960-1964. |
| MLA | Zheng Rong-Jie,et al."Variational Monte Carlo analysis of Bose-Einstein condensation in a two-dimensional trap".CHINESE PHYSICS 15(2006):1960-1964. |
入库方式： OAI收割
来源：近代物理研究所
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