Condensation of Fermions in the double-well potential

doi:10.1088/1674-1056/23/2/026701

中国物理B ›› 2014, Vol. 23 ›› Issue (2): 26701-026701.doi: 10.1088/1674-1056/23/2/026701

• CONDENSED MATTER: STRUCTURAL, MECHANICAL, AND THERMAL PROPERTIES • 上一篇下一篇

Condensation of Fermions in the double-well potential

陈欣委, 刘中强, 孔祥木

College of Physics and Engineering, Qufu Normal University, Qufu 273165, China

收稿日期:2013-04-22 修回日期:2013-06-11 出版日期:2013-12-12 发布日期:2013-12-12
基金资助:
Project supported by the National Natural Science Foundation of China (Grant No. 11275112), the Natural Science Foundation of Shandong Province of China (Grant No. ZR2011AM018), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103705110004).

Condensation of Fermions in the double-well potential

Chen Xin-Wei (陈欣委), Liu Zhong-Qiang (刘中强), Kong Xiang-Mu (孔祥木)

College of Physics and Engineering, Qufu Normal University, Qufu 273165, China

Received:2013-04-22 Revised:2013-06-11 Online:2013-12-12 Published:2013-12-12
Contact: Kong Xiang-Mu E-mail:kongxm@mail.qfnu.edu.cn
About author:67.10.Db; 67.85.Lm; 03.75.Ss
Supported by:
Project supported by the National Natural Science Foundation of China (Grant No. 11275112), the Natural Science Foundation of Shandong Province of China (Grant No. ZR2011AM018), and the Specialized Research Fund for the Doctoral Program of Higher Education of China (Grant No. 20103705110004).

摘要/Abstract

摘要： The density distribution of ultracold two-component fermionic gases ⁶Li, which are confined in a gradient magnetic field and a symmetrical double-well potential, is investigated by employing local-density approximation. It is found that three different regimes including quasi-molecular Bose–Einstein condensation (BEC_m), the dimers in the unitarity limit (UL_d), and Bardeen–Cooper–Schrieffer superfluid (BCS) can coexist at the same time. Furthermore, the ranges of these regimes can be controlled to some extent by tuning the gradient of the magnetic field and the parameters characterizing the properties of the double-well potential. This study is of guidance and significance for experimentally realizing the coexistence of BEC_m, UL_d, and BCS in the double-well potential.

关键词: molecular Bose–, Einstein condensation, unitarity limit, Bardeen–, Cooper–, Schrieffer superfluid

Abstract: The density distribution of ultracold two-component fermionic gases ⁶Li, which are confined in a gradient magnetic field and a symmetrical double-well potential, is investigated by employing local-density approximation. It is found that three different regimes including quasi-molecular Bose–Einstein condensation (BEC_m), the dimers in the unitarity limit (UL_d), and Bardeen–Cooper–Schrieffer superfluid (BCS) can coexist at the same time. Furthermore, the ranges of these regimes can be controlled to some extent by tuning the gradient of the magnetic field and the parameters characterizing the properties of the double-well potential. This study is of guidance and significance for experimentally realizing the coexistence of BEC_m, UL_d, and BCS in the double-well potential.

Key words: molecular Bose–Einstein condensation, unitarity limit, Bardeen–Cooper–Schrieffer superfluid

中图分类号: (Fermion degeneracy)

67.10.Db

67.85.Lm (Degenerate Fermi gases) 03.75.Ss (Degenerate Fermi gases)

陈欣委, 刘中强, 孔祥木. Condensation of Fermions in the double-well potential[J]. 中国物理B, 2014, 23(2): 26701-026701.

Chen Xin-Wei (陈欣委), Liu Zhong-Qiang (刘中强), Kong Xiang-Mu (孔祥木). Condensation of Fermions in the double-well potential[J]. Chin. Phys. B, 2014, 23(2): 26701-026701.

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Condensation of Fermions in the double-well potential

Condensation of Fermions in the double-well potential

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