Ideal mean-field transition in a modulated cold atom system.
Ideal mean-field transition in a modulated cold atom system.
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调制冷原子系统中的理想平均场跃迁。
DOI：
10.1103/physreve.82.031134
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发表时间：
2010
期刊：
影响因子：
--
通讯作者：
W. Jhe
中科院分区：
文献类型：
--
作者：
Myoung;Yonghee Kim;Kihwan Kim;Geol Moon;Junhyung Lee;H. Noh;M. Dykman;W. Jhe
我们证明了在周期调制光阱中的原子系统呈现出理想的平均场破缺跃迁。通过调制周期，相对于时间平移的对称性被打破。我们描述了实验观察，并制定了一个完整的微观理论所观察到的临界现象。这种跃迁是由强调制系统中原子间的长程相互作用和非平衡涨落共同作用的结果。观测结果，包括对称性破缺相位中的反常涨落，都得到了理论的充分描述。
We show that an atomic system in a periodically modulated optical trap displays an ideal mean-field symmetry-breaking transition. The symmetry is broken with respect to time translation by the modulation period. We describe experimental observations and develop a full microscopic theory of the observed critical phenomena. The transition is explained as resulting from the interplay of the long-range interatomic interaction and nonequilibrium fluctuations in the strongly modulated system. The observations, including anomalous fluctuations in the symmetry broken phase, are fully described by the theory.