KINETICS OF BOSE-EINSTEIN CONDENSATION IN A TRAP
KINETICS OF BOSE-EINSTEIN CONDENSATION IN A TRAP
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DOI：
10.1103/physrevlett.79.1793
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发表时间：
1997-07
影响因子：
8.6
通讯作者：
C. Gardiner;P. Zoller;R. Ballagh;M. Davis
中科院分区：
文献类型：
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作者：
C. Gardiner;P. Zoller;R. Ballagh;M. Davis
利用基于量子动力学理论的主方程描述了阱中玻色-爱因斯坦凝聚体的形成过程，该主方程可以很好地近似为仅使用凝聚体模式与非凝聚体原子的热化浴相互作用的描述。本文导出了（n）/dot = 2 W（+）（n）[（1 - e（{mu n-mu}/kT））n + 1]的速率方程，其中冷凝物化学势mu（n）与熔池化学势mu之差给出了基本行为。该方程的解给出了冷凝物形成的特征潜伏期，并且似乎与观察到的铷和钠冷凝物形成的行为一致。
The formation process of a Bose-Einstein condensate in a trap is described using a master equation based on quantum kinetic theory, which can be well approximated by a description using only the condensate mode in interaction with a thermalized bath of noncondensate atoms. A rate equation of the form (n) over dot = 2W(+)(n)[(1 - e({mu n - mu}/kT))n + 1] is derived, in which the difference between the condensate chemical potential mu(n) and the bath chemical potential mu gives the essential behavior. Solutions of this equation give a characteristic latency period for condensate formation and appear to be consistent with the observed behavior of both rubidium and sodium condensate formation.