在斯-爱因斯坦凝聚物中观测状格子
J R Abo-Shaeer1, C Raman, J M Vogels
1Department of Physics, Center for Ultracold Atoms at Massachusetts Institute of Technology (MIT) and Harvard University, and Research Laboratory of Electronics, MIT, Cambridge, MA 02139, USA.
Science (New York, N.Y.)
|March 27, 2001
概括
研究人员观察到旋转的波斯冷凝气体中有序的状网格,寿命长达40秒. 这一发现表明,斯-爱因斯坦凝结体是研究状物质动态的一个模型系统.
科学领域:
- 凝聚物质物理学 凝聚物质物理学
- 量子流体是一种量子流体.
背景情况:
- 量子化旋是超流动性和超导性的基础.
- 了解的行为对于这些量子现象至关重要.
研究的目的:
- 观测和描述旋转状网格在旋转的氏凝聚气体中的形成.
- 研究这些结构的动态和稳定性.
主要方法:
- 在旋转系统中创建波斯冷凝气体.
- 观察状格子的形成和结构.
- 对的生命周期和动态进行分析.
主要成果:
- 观察到含有100多个的高排序的三角状状网格.
- 状格子的寿命为几秒钟,个别状格子的持续时间高达40秒.
- 网格是通过一系列的旋转频率和陷几何形状生成的.
结论:
- 气体斯-爱因斯坦凝结物提供了一个可控制的系统,用于研究量子化.
- 观察到的状物质动态,包括失位和不规则的结构,支持它们作为模型系统的使用.
- 这项研究提供了对控制量子系统中形形成和行为的基本过程的见解.
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