Coupling between Collective Excitations of a Bose--Einstein Condensate and Modulated Interactions |
| |
| Authors: | ZHANG Jian ZHENG Fa-Wei |
| |
| Affiliation: | Center for Advanced Study, Tsinghua University, Beijing 100084 |
| |
| Abstract: | We investigate collective excitations of a Bose--Einstein condensate in the presence of temporal modulation of repulsive interactions, and analytically demonstrate that the modulated interaction can drive the condensate to oscillate with the external modulation frequency, and that the interaction couples with the eigen modes of the condensate collective excitations, which was previously considered to be independent of interaction. When the external modulation frequency approaches or is far away from the eigen frequency of the density monopole mode, the condensate shows resonant or beating behaviour. |
| |
| Keywords: | 03 75 Kk 05 30 Jp 03 75 Nt |
| 本文献已被 维普 等数据库收录！ |
| 点击此处可从《中国物理快报》浏览原始摘要信息 |
|
点击此处可从《中国物理快报》下载免费的PDF全文 |
|
