中国物理B ›› 2008, Vol. 17 ›› Issue (11): 4158-4162.doi: 10.1088/1674-1056/17/11/033

• ATOMIC AND MOLECULAR PHYSICS • 上一篇    下一篇

Study of dynamical behaviour and fermionization of a bosonic gas in funnel potential

许广元1, 严 蠡1, 王永俊1, 刘先锋1, 韩玖荣1, 王育竹2   

  1. (1)Department of Physics, Yangzhou University, Yangzhou 225002, China; (2)Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics and Center for Cold Atom Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • 收稿日期:2008-03-16 修回日期:2008-04-10 出版日期:2008-11-20 发布日期:2008-11-20
  • 基金资助:
    Project supported by National Natural Science Foundation of China (Grant No 10647144) and Doctoral Special Fund of Yangzhou University of China (Grant No GK0513102), and by Open Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences (Grant No T152613).

Study of dynamical behaviour and fermionization of a bosonic gas in funnel potential

Xu Guang-Yuan (许广元)a, Yan Li (严 蠡)a, Wang Yong-Jun (王永俊)a, Liu Xian-Feng (刘先锋)a, Han Jiu-Rong (韩玖荣)a, Wang Yu-Zhu (王育竹)b   

  1. a Department of Physics, Yangzhou University, Yangzhou 225002, China; b Laboratory for Quantum Optics, Shanghai Institute of Optics and Fine Mechanics and Center for Cold Atom Physics, Chinese Academy of Sciences, Shanghai 201800, China
  • Received:2008-03-16 Revised:2008-04-10 Online:2008-11-20 Published:2008-11-20
  • Supported by:
    Project supported by National Natural Science Foundation of China (Grant No 10647144) and Doctoral Special Fund of Yangzhou University of China (Grant No GK0513102), and by Open Fund of State Key Laboratory of Magnetic Resonance and Atomic and Molecular Physics, Wuhan Institute of Physics and Mathematics, Chinese Academy of Sciences (Grant No T152613).

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摘要： This paper presents a funnel external potential model to investigate dynamic properties of ultracold Bose gas. By using variational method, we obtain the ground-state energy and density properties of ultracold Bose atoms. The results show that the ultracold Bose gas confined in a funnel potential experiences the transition from three-dimensional regime to quasi-one-dimensional regime in a small aspect ratio, and undergoes fermionization process as the aspect ratio increases.

Abstract: This paper presents a funnel external potential model to investigate dynamic properties of ultracold Bose gas. By using variational method, we obtain the ground-state energy and density properties of ultracold Bose atoms. The results show that the ultracold Bose gas confined in a funnel potential experiences the transition from three-dimensional regime to quasi-one-dimensional regime in a small aspect ratio, and undergoes fermionization process as the aspect ratio increases.

Key words: Bose gas, fermionization, dynamics

中图分类号:  (Boson systems)

  • 05.30.Jp
03.75.Kk (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow) 37.10.De (Atom cooling methods)