Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment

doi:10.1088/1674-1056/acd922

中国物理B ›› 2023, Vol. 32 ›› Issue (9): 90501-090501.doi: 10.1088/1674-1056/acd922

Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment

Tie-Fu Zhang(张铁夫)^1,2, Cheng-Xi Li(李成蹊)^1,2, and Wu-Ming Liu(刘伍明)^1,2,3,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China

收稿日期:2023-03-25 修回日期:2023-05-19 接受日期:2023-05-26 发布日期:2023-09-01
通讯作者: Wu-Ming Liu E-mail:wliu@iphy.ac.cn
基金资助:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA1400900, 2021YFA0718300, and 2021YFA1402100), the National Natural Science Foundation of China (Grant Nos. 61835013, 12174461, 12234012, and 12334012), and the Space Application System of China Manned Space Program.

Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment

Tie-Fu Zhang(张铁夫)^1,2, Cheng-Xi Li(李成蹊)^1,2, and Wu-Ming Liu(刘伍明)^1,2,3,†

1 Beijing National Laboratory for Condensed Matter Physics, Institute of Physics, Chinese Academy of Sciences, Beijing 100190, China;
2 School of Physical Sciences, University of Chinese Academy of Sciences, Beijing 100049, China;
3 Songshan Lake Materials Laboratory, Dongguan 523808, China

Received:2023-03-25 Revised:2023-05-19 Accepted:2023-05-26 Published:2023-09-01
Contact: Wu-Ming Liu E-mail:wliu@iphy.ac.cn
Supported by:
Project supported by the National Key Research and Development Program of China (Grant Nos. 2021YFA1400900, 2021YFA0718300, and 2021YFA1402100), the National Natural Science Foundation of China (Grant Nos. 61835013, 12174461, 12234012, and 12334012), and the Space Application System of China Manned Space Program.

摘要/Abstract

摘要： We investigated the dynamic evolution and interference phenomena of bubble-shaped Bose-Einstein condensates achievable in a micro-gravity environment. Using numerical solutions of the Gross-Pitaevskii equation describing the dynamic evolution of the bubble-shaped Bose-Einstein condensates, we plotted the evolution of the wave function density distribution on its two-dimensional (2D) cross-section and analysed the resulting patterns. We found that changes in the strength of atomic interactions and initial momentum can affect the dynamic evolution of the bubble-shaped Bose-Einstein condensates and their interference fringes. Notably, we have observed that when the initial momentum is sufficiently high, the thickness of the bubble-shaped Bose-Einstein condensate undergoes a counterintuitive thinning, which is a counterintuitive result that requires further investigation. Our findings are poised to advance our comprehension of the physical essence of bubble-shaped Bose-Einstein condensates and to facilitate the development of relevant experiments in micro-gravity environments.

关键词: boson systems, ultracold gases, dynamic properties of condensates

Abstract: We investigated the dynamic evolution and interference phenomena of bubble-shaped Bose-Einstein condensates achievable in a micro-gravity environment. Using numerical solutions of the Gross-Pitaevskii equation describing the dynamic evolution of the bubble-shaped Bose-Einstein condensates, we plotted the evolution of the wave function density distribution on its two-dimensional (2D) cross-section and analysed the resulting patterns. We found that changes in the strength of atomic interactions and initial momentum can affect the dynamic evolution of the bubble-shaped Bose-Einstein condensates and their interference fringes. Notably, we have observed that when the initial momentum is sufficiently high, the thickness of the bubble-shaped Bose-Einstein condensate undergoes a counterintuitive thinning, which is a counterintuitive result that requires further investigation. Our findings are poised to advance our comprehension of the physical essence of bubble-shaped Bose-Einstein condensates and to facilitate the development of relevant experiments in micro-gravity environments.

Key words: boson systems, ultracold gases, dynamic properties of condensates

中图分类号: (Boson systems)

05.30.Jp

67.85.-d (Ultracold gases, trapped gases) 03.75.Kk (Dynamic properties of condensates; collective and hydrodynamic excitations, superfluid flow)

Tie-Fu Zhang(张铁夫), Cheng-Xi Li(李成蹊), and Wu-Ming Liu(刘伍明). Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment[J]. 中国物理B, 2023, 32(9): 90501-090501.

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Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment

Dynamics of bubble-shaped Bose-Einstein condensates on two-dimensional cross-section in micro-gravity environment

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