玻色-爱因斯坦凝聚体的相动力学：损失与恢复
Phase Dynamics of Bose-Einstein Condensates: Losses versus Revivals
摘要：
在没有损失的情况下，由于弹性原子相互作用，玻色-爱因斯坦凝聚体的相位随时间经历坍缩和恢复。由于实验必然涉及非弹性碰撞，我们开发了一个模型来描述碰撞损失存在下的凝聚相动力学。我们发现，一些非弹性过程是足够的阻尼相的复苏。由于这个原因，在目前的实验条件下，相位恢复的可观测性仅限于几百个原子的凝聚体。
英文摘要：
In the absence of losses the phase of a Bose-Einstein condensate undergoes collapses and revivals in time due to elastic atomic interactions. As experiments necessarily involve inelastic collisions, we develop a model to describe the phase dynamics of the condensates in presence of collisional losses. We find that a few inelastic processes are sufficient to damp the revivals of the phase. For this reason the observability of phase revivals for present experimental conditions is limited to condensates with a few hundreds of atoms.
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