Coherence, correlations, and collisions: What one learns about Bose-Einstein condensates from their decay
Coherence, correlations, and collisions: What one learns about Bose-Einstein condensates from their decay
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DOI：
10.1103/physrevlett.79.337
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发表时间：
1997-07-21
影响因子：
8.6
通讯作者：
Wieman, CE
中科院分区：
文献类型：
--
作者：
Burt, EA;Ghrist, RW;Wieman, CE
我们用三体复合率灵敏地探测了玻色-爱因斯坦凝聚体(BEC)和超冷非凝聚稀薄原子气体中原子之间的统计关联。我们推断，在BEC样品中密度涨落被抑制。我们测量了RB-87在F=1，m(F)=-1超精细态下凝聚态和冷非凝聚态的三体复合速率常数。两者之比为7.4(2.6)，与理论因子3！并证明了凝聚态原子比非凝聚态原子集束程度低。
We have used three-body recombination rates as a sensitive probe of the statistical correlations between atoms in Bose-Einstein condensates (BEC) and in ultracold noncondensed dilute atomic gases. We infer that density fluctuations are suppressed in the BEC samples. We measured the three-body recombination rate constants for condensates and cold noncondensates from number loss in the F = 1,m(f) = -1 hyperfine state of Rb-87. The ratio of these is 7.4(2.6) which agrees with the theoretical factor of 3! and demonstrates that condensate atoms are less bunched than noncondensate atoms.