Matter wave interference of dilute Bose gases in the critical regime
Matter wave interference of dilute Bose gases in the critical regime
复制标题
临界区稀玻色气体的物质波干涉
DOI：
10.1088/1674-1056/26/5/050501
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发表时间：
2017
影响因子：
1.7
通讯作者：
HW Xiong
中科院分区：
文献类型：
--
作者：
Xuguang Yue;Shujuan Liu;Biao Wu;HW Xiong
超冷原子气体为研究普遍的相变临界行为提供了新的机会。从理论上研究了临界区超冷玻色气体的物质波干涉。我们证明了动量分布的干涉可以用来提取玻色气体中的相关性。发现了干涉可见度和关联长度之间的简单关系，并用于解释关于稀玻色气体临界行为的开创性实验[Science 315 1556（2007）]。我们的理论为用物质波干涉的方法在实验上研究各种类型的超冷原子气体铺平了道路。
Ultra-cold atomic gases provide a new chance to study the universal critical behavior of phase transition. We study theoretically the matter wave interference for ultra-cold Bose gases in the critical regime. We demonstrate that the interference in the momentum distribution can be used to extract the correlation in the Bose gas. A simple relation between the interference visibility and the correlation length is found and used to interpret the pioneering experiment about the critical behavior of dilute Bose gases [Science 315 1556 (2007)]. Our theory paves the way to experimentally study various types of ultra-cold atomic gases with the means of matter wave interference.