中国物理B ›› 2025, Vol. 34 ›› Issue (6): 60301-060301.doi: 10.1088/1674-1056/adc36b

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Ground state of SU(3) spin-orbit coupled soft-core Bose gas

Jia Liu(刘佳)1, Jing Feng(冯婧)1, Ya-Jun Wang(王雅君)2, Xiao-Fei Zhang(张晓斐)1, and Xue-Ying Yang(杨雪滢)3,†   

  1. 1 School of Physics and Information Science, Shaanxi University of Science and Technology, Xi'an 710021, China;
    2 Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China;
    3 Key Laboratory of Time Reference and Applications, National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China
  • 收稿日期:2025-02-18 修回日期:2025-03-17 接受日期:2025-03-21 出版日期:2025-05-16 发布日期:2025-06-06
  • 通讯作者: Xue-Ying Yang E-mail:xyyang@nudt.edu.cn
  • 基金资助:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12175129, 12475004, 12175027, and 12005125), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. ZDBSLY7016), the Shaanxi Fundamental Science Research Project for Mathematics and Physics (Grant No. 22JSY034), the Key Research and Development Projects of Shaanxi Province, China (Grant No. 2024GX-YBXM-564), the Scientific Research Program Funded by Shaanxi Provincial Education Department (Grant No. 23JP020), and the Youth Innovation Team of Shaanxi Universities.

Ground state of SU(3) spin-orbit coupled soft-core Bose gas

Jia Liu(刘佳)1, Jing Feng(冯婧)1, Ya-Jun Wang(王雅君)2, Xiao-Fei Zhang(张晓斐)1, and Xue-Ying Yang(杨雪滢)3,†   

  1. 1 School of Physics and Information Science, Shaanxi University of Science and Technology, Xi'an 710021, China;
    2 Department of Basic Sciences, Air Force Engineering University, Xi'an 710051, China;
    3 Key Laboratory of Time Reference and Applications, National Time Service Center, Chinese Academy of Sciences, Xi'an 710600, China
  • Received:2025-02-18 Revised:2025-03-17 Accepted:2025-03-21 Online:2025-05-16 Published:2025-06-06
  • Contact: Xue-Ying Yang E-mail:xyyang@nudt.edu.cn
  • Supported by:
    Project supported by the National Natural Science Foundation of China (Grant Nos. 12175129, 12475004, 12175027, and 12005125), the Key Research Program of Frontier Sciences of the Chinese Academy of Sciences (Grant No. ZDBSLY7016), the Shaanxi Fundamental Science Research Project for Mathematics and Physics (Grant No. 22JSY034), the Key Research and Development Projects of Shaanxi Province, China (Grant No. 2024GX-YBXM-564), the Scientific Research Program Funded by Shaanxi Provincial Education Department (Grant No. 23JP020), and the Youth Innovation Team of Shaanxi Universities.

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摘要： By numerical propagation of the coupled Gross-Pitaevskii equations, the ground state phase of a SU(3) spin-orbit coupled Bose gas with nonlocal soft-core interactions has been investigated within the all parameter space, showing strong dependence on the strength of SU(3) spin-orbit coupling, nonlocal soft-core interactions, spin-exchange interactions and Rydberg blockade radius. More specially, we also perform a detailed study of the dependence of soft-core interaction on the Rydberg blockade radius at the point of rotational symmetry breaking. Our results show that under the combined effects of such parameters, the ground state shows a threefold-degenerate magnetized state for ferromagnetic spin interaction, while a variety of lattice phases for antiferromagnetic spin interaction.

关键词: Bose-Einstein condensate, soft-core interaction, spin-orbit coupling

Abstract: By numerical propagation of the coupled Gross-Pitaevskii equations, the ground state phase of a SU(3) spin-orbit coupled Bose gas with nonlocal soft-core interactions has been investigated within the all parameter space, showing strong dependence on the strength of SU(3) spin-orbit coupling, nonlocal soft-core interactions, spin-exchange interactions and Rydberg blockade radius. More specially, we also perform a detailed study of the dependence of soft-core interaction on the Rydberg blockade radius at the point of rotational symmetry breaking. Our results show that under the combined effects of such parameters, the ground state shows a threefold-degenerate magnetized state for ferromagnetic spin interaction, while a variety of lattice phases for antiferromagnetic spin interaction.

Key words: Bose-Einstein condensate, soft-core interaction, spin-orbit coupling

中图分类号:  (Static properties of condensates; thermodynamical, statistical, and structural properties)

  • 03.75.Hh
67.85.-d (Ultracold gases, trapped gases) 67.85.De (Dynamic properties of condensates; excitations, and superfluid flow) 75.10.-b (General theory and models of magnetic ordering)