Hyperchaos of two coupled Bose-Einstein condensates with a three-body interaction

• 来源期刊: 中国物理B（英文版）
• 关键词: Bose-Einstein condensate hyperchaos two-mode approximation Lyapunov exponent
• 年，卷（期）: 2008,（9）
• 页码范围: 3270-3275
• 页数: 6页
• 语种: 英文

摘要

We investigate the dynamics of two tunnel-coupled Boee-Einstein condensates(BECs)in a double-well potential.The effects of the three-body recombination loss and the feeding of the condensates from the thermal cloud are studied in the case of attractive interatomic interaction.An imaginary three-body interaction term is considered and a two-mode approximation is used to derive three coupled equations which describe the total atomic numbers of the two condensates,the relative population and relative phase respectively.Theoretical analyses and numerical calculations demonstrate the existence of chaotic and hyperchaotic behaviour by using a periodically time-varying scattering length.