论文标题
二元相互作用和三体相互作用之间的相互作用，并增强无诱捕偶极偶极玻色丝凝结物中的稳定性
Interplay between binary and three-body interactions and enhancement of stability in trapless dipolar Bose-Einstein condensates
论文作者
论文摘要
我们研究了带有远距离偶极双极的非局部毛 - 皮塔维斯基（GP）方程，并接触相互作用（包括二进制和三体碰撞）。我们解决了三体相互作用对稳定无诱因的偶极玻璃纤维冷凝物（BEC）的影响。发现双极性BEC不仅表现出稳定性，这不仅是有吸引力的二进制和排斥三体相互作用的通常组合，而且对于这些术语具有相反符号的情况。通过通过Feshbach共振施加的三体相互作用的时间周期性调制，可以进一步增强偶极性BEC的诱捕性稳定性。结果是使用变分方法分析产生的，并通过数值模拟确认。
We investigate the nonlocal Gross-Pitaevskii (GP) equation with long-range dipole-dipole and contact interactions (including binary and three-body collisions). We address the impact of the three-body interaction on stabilizing trapless dipolar Bose-Einstein condensates (BECs). It is found that the dipolar BECs exhibit stability not only for the usual combination of attractive binary and repulsive three-body interactions, but also for the case when these terms have opposite signs. The trapless stability of the dipolar BECs may be further enhanced by time-periodic modulation of the three-body interaction imposed by means of Feshbach resonance. The results are produced analytically using the variational approach and confirmed by numerical simulations.
