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Energy sharing induced by the nonlinear interaction |
| Yuan Liu(刘渊)1, Zhifang Feng(冯志芳)1, Weidong Li(李卫东)2 |
1. Physics Department of College of Applied Science, Taiyuan University of Science and Technology, Taiyuan 030024, China;
2. Institute of Theoretical Physics and Department of Physics, Shanxi University, Taiyuan 030006, China |
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Abstract Strong energy sharing is shown by numerically investigating coupled multi-component Bose-Einstein condensates (BECs) with a harmonic trap to simulate the Fermi-Pasta-Ulam model (FPU). For two-component BECs, the energy exchanging between each part, from regular, quantum beating to complete energy sharing, is explored by simulating their Husimi distributions, the time evolution of energies and the statistical entropy. Meanwhile, in the three-component case, a more complex energy sharing behavior is reported and a strong energy sharing is found.
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Received: 27 June 2016
Revised: 02 September 2016
Accepted manuscript online:
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PACS:
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34.50.Cx
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(Elastic; ultracold collisions)
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05.30.Jp
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(Boson systems)
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05.45.Pq
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(Numerical simulations of chaotic systems)
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| Fund: Project supported by the National Natural Science Foundation of China (Grant No. 11374197), the Research Fund for the Doctoral Program of TYUST, China (Grant No. 20122041), and the Program for Changjiang Scholars and Innovative Research Team in University, China (Grant No. IRT13076). |
Corresponding Authors:
Weidong Li
E-mail: wdli@sxu.edu.cn
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Cite this article:
Yuan Liu(刘渊), Zhifang Feng(冯志芳), Weidong Li(李卫东) Energy sharing induced by the nonlinear interaction 2017 Chin. Phys. B 26 013401
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