AI 中文总结
该研究推导了与运动库相互作用的玻色-爱因斯坦凝聚体的拖曳微观理论，通过玻恩-马尔可夫近似得到含拖曳势的有效方程，导出拖曳力与系数，并模拟了激子-极化激元凝聚体与漂移电子气的拖曳。
AI 中文摘要
我们推导了与运动库相互作用的玻色-爱因斯坦凝聚体的拖曳微观理论。从凝聚体与漂移费米子库的相互作用出发，我们在玻恩-马尔可夫近似下积分掉库的自由度，得到带有拖曳势的有效格罗斯-皮塔耶夫斯基方程。基于该势，我们推导了有效拖曳力，并得到拖曳系数的闭合表达式，其由库密度涨落和凝聚体密度分布决定。作为应用，我们模拟了与漂移电子气相互作用的激子-极化激元凝聚体的拖曳现象。
英文摘要
We derive a microscopic theory of drag for a Bose-Einstein condensate interacting with a moving reservoir. Starting from interactions between a condensate and a drifting fermionic bath, we integrate out the bath degrees of freedom within the Born--Markov approximation to obtain an effective Gross--Pitaevskii equation with a drag potential. From this potential we derive an effective drag force and obtain a closed expression for the drag coefficient, determined by the reservoir density fluctuations and the condensate density profile. As an application, we simulate the drag for an exciton--polariton condensate interacting with a drifting electron gas.
