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Numerical simulation on tunnel splitting of Bose-Einstein condensate in multi-well potentials

  • Molecular Physics and Chemical Physics
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Abstract.

The low-energy-level macroscopic wave functions of the Bose-Einstein condensate (BEC) trapped in a symmetric double-well and a periodic potential are obtained by solving the Gross-Pitaevskii equation numerically. The ground state tunnel splitting is evaluated in terms of the even and odd wave functions corresponding to the global ground and excited states respectively. We show that the numerical result is in good agreement with the analytic level splitting obtained by means of the periodic instanton method.

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Authors and Affiliations

  1. Department of Physics and Institute of Theoretical Physics, Shanxi University, Taiyuan, 030006, P.R. China

    Y. Hao, J.-Q. Liang & Y. Zhang

  2. Department of Physics, University of Turku, Laboratory of Optics and Spectroscopy, 20014, Turku, Finland

    Y. Zhang

Authors
  1. Y. Hao
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  2. J.-Q. Liang
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  3. Y. Zhang
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Correspondence to Y. Hao.

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Hao, Y., Liang, JQ. & Zhang, Y. Numerical simulation on tunnel splitting of Bose-Einstein condensate in multi-well potentials. Eur. Phys. J. D 36, 33–39 (2005). https://doi.org/10.1140/epjd/e2005-00090-0

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