Boson star superradiance

Gao, He-Yu; Saffin, Paul M; Wang, Yi-Jie; Xie, Qi-Xin; Zhou, Shuang-Yong

Abstract

Recently, it has been realized that in some systems internal space rotation can induce energy amplification for scattered waves, similar to rotation in real space. In particularly, it has been shown that energy extraction is possible for a Q-ball, a stationary non-topological soliton that is coherently rotating in its field space. In this paper, we generalize the analysis to the case of boson stars, and show that the same energy extraction mechanism still works for boson stars.

• Journal Article Type: Article
• Acceptance Date: Feb 23, 2024
• Online Publication Date: May 17, 2024
• Publication Date: 2024-06
• Deposit Date: Feb 26, 2024
• Publicly Available Date: May 18, 2025
• Journal: Science China Physics, Mechanics & Astronomy
• Print ISSN: 1674-7348
• Electronic ISSN: 1869-1927
• Publisher: Springer Verlag
• Peer Reviewed: Peer Reviewed
• Volume: 67
• Issue: 6
• Article Number: 260413
• DOI: https://doi.org/10.1007/s11433-023-2357-4
• Keywords: Superradiance; boson star; field space rotation
• Public URL: https://nottingham-repository.worktribe.com/output/31884918
• Additional Information: Received: 1 December 2023; Accepted: 23 February 2024; First Online: 17 May 2024; : Conflict of interest The authors declare that they have no conflict of interest.