scholarly journals Symmetry breaking and self-trapping of a dipolar Bose-Einstein condensate in a double-well potential

2009 ◽  
Vol 79 (1) ◽  
Author(s):  
Bo Xiong ◽  
Jiangbin Gong ◽  
Han Pu ◽  
Weizhu Bao ◽  
Baowen Li
Keyword(s):  
Symmetry Breaking ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Self Trapping ◽  
Bose Einstein ◽  
Double Well Potential

scholarly journals Symmetry breaking and tunneling dynamics of a dipolar Bose–Einstein condensate in a double-well potential

2018 ◽  
Vol 96 (6) ◽  
pp. 622-626 ◽  
Author(s):  
Yuan Sheng Wang ◽  
Ping Long ◽  
Bo Zhang ◽  
Hong Zhang
Keyword(s):  
Symmetry Breaking ◽  
Long Range ◽  
Three Dimensional ◽  
Dipolar Interaction ◽  
Einstein Condensate ◽  
Bose Einstein Condensate ◽  
Symmetry Properties ◽  
Tunneling Dynamics ◽  
Bose Einstein ◽  
Double Well Potential

We investigate the properties of a three-dimensional (3D) dipolar Bose–Einstein condensate (BEC) in a double-well potential (DWP). Symmetry breaking and tunneling dynamics phenomena are demonstrated for 164Dy atoms in the 3D DWP using an effective two-mode model. The results show that the symmetry properties of the dynamics are affected markedly by the long-range nature and anisotropy of the dipolar interaction and the isotropic contact interaction.

Josephson dynamics of strongly interacting superfluid Fermi gases in double-well potentials

2020 ◽  
pp. 2150002
Author(s):  
Ji Li ◽  
Wen Wen ◽  
Yuke Zhang ◽  
Xiaodong Ma
Keyword(s):  
Einstein Condensate ◽  
Interaction Terms ◽  
Bose Einstein Condensate ◽  
Strongly Interacting ◽  
Fermi Superfluids ◽  
The Cross ◽  
Bose Einstein ◽  
Double Well Potential ◽  
Zero Phase ◽  
Superfluid Fermi

In this work, we study the nonlinear Josephson dynamics of Fermi superfluids in the crossover from Bardeen–Cooper–Schrieffer (BCS) superfluid to a molecular Bose-Einstein condensate (BEC) in a double-well potential. Under a two-mode approximation, we derive a full two-mode (fTM) model including all interaction energy terms. By solving the fTM model numerically, we study the zero-phase and [Formula: see text]-phase modes of Josephson oscillations in the BCS–BEC crossover. We find that in the strongly interacting regime the cross interaction terms not appearing in the two-mode model cannot be easily ignored. The cross interactions can alter the behaviors of Josephson dynamics substantially, and interestingly the alterations for the zero-phase and [Formula: see text]-phase modes are just opposite.

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