氢玻色-爱因斯坦凝聚体的1 S-2S谱
1S-2S Spectrum of a Hydrogen Bose-Einstein Condensate
摘要：
本文计算了氢原子玻色-爱因斯坦凝聚体在冷碰撞频移主导线型的情况下的双光子1 S-2S谱。采用WKB近似和静态相位近似计算了2S原子从凝聚态到运动本征态的跃迁强度。激发态的波函数发现使用平均场势，其中包括与凝聚原子的碰撞的影响。结果与实验数据吻合良好。这种形式主义可以用来寻找各种激发方案的凝聚光谱。
英文摘要：
We calculate the two-photon 1S-2S spectrum of an atomic hydrogen Bose-Einstein condensate in the regime where the cold collision frequency shift dominates the lineshape. WKB and static phase approximations are made to find the intensities for transitions from the condensate to motional eigenstates for 2S atoms. The excited state wave functions are found using a mean field potential which includes the effects of collisions with condensate atoms. Results agree well with experimental data. This formalism can be used to find condensate spectra for a wide range of excitation schemes.
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