The dynamics of triple-well trapped Bose-Einstein condensates with atoms feeding and loss effects

• 来源期刊: 中国物理B（英文版）
• 关键词: Bose-Einstein condensates three-body recombination and atoms feeding quantum self-trapping quantum tunnelling
• 年，卷（期）: 2008,（3）
• 页码范围: 764-770
• 页数: 7页
• 语种: 英文

摘要

In this paper, we consider the macroscopic quantum tunnelling and self-trapping phenomena of Bose-Einstein condensates (BECs) with three-body recombination losses and atoms feeding from thermal cloud in triple-well potential.Using the three-mode approximation, three coupled Gross-Pitaevskii equations (GPEs), which describe the dynamics of the system, are obtained. The corresponding numerical results reveal some interesting characteristics of BECs for different scattering lengths. The self-trapping and quantum tunnelling both are found in zero-phase and π-pbaso modes.Furthermore, we observe the quantum beating phenomenon and the resonance character during the self-trapping and quantum tunnelling. It is also shown that the initial phase has a significant effect on the dynamics of the system.