Chains of rotating boson stars with quartic or sextic self-interaction.
Saved in:
| Title: | Chains of rotating boson stars with quartic or sextic self-interaction. |
|---|---|
| Authors: | Sun, Hao-Ran1,2 (AUTHOR) sunhr2024@lzu.edu.cn, Bin, Jing-Kang1,2 (AUTHOR) 220220939311@lzu.edu.cn, Zhao, Li1,2 (AUTHOR) lizhao@lzu.edu.cn |
| Source: | European Physical Journal C -- Particles & Fields. Feb2026, Vol. 86 Issue 2, p1-15. 15p. |
| Subjects: | Scalar field theory, General relativity (Physics), Einstein, Albert, 1879-1955, Mass (Physics), Angular momentum (Mechanics), Stellar rotation |
| Abstract: | This paper investigates chains of rotating boson stars (BSs) within Einstein gravity coupled to a complex scalar field. The model incorporates quartic or sextic self-interactions in the scalar Lagrangian, which support the existence of stationary, solitonic, gravitationally bound solutions. We numerically construct these multi-component systems and investigate how the self-interactions alter their global properties−specifically the Arnowitt-Deser-Misner (ADM) mass M, the angular momentum J and the morphology of their ergospheres. A central result is the distinct dependence of the (ω , M) and (ω , J) relations on the parity of the chains. Specifically, systems with an even number of constituents display spiraling curves, while those with an odd number exhibit loop structures. Moreover, we observe that two initially distinct ergospheres merge into a single one as the frequency ω increases. Our analysis also indicates that the quartic interaction imposes more restrictive existence bounds, particularly for odd-numbered chains, thereby restricting stable configurations to the weak-coupling regime. In contrast, the sextic interaction has a weaker effect and enables stable solutions at substantially stronger couplings. [ABSTRACT FROM AUTHOR] |
| Copyright of European Physical Journal C -- Particles & Fields is the property of Springer Nature and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
|
Full text is not displayed to guests.
Login for full access.
|
|
| Abstract: | This paper investigates chains of rotating boson stars (BSs) within Einstein gravity coupled to a complex scalar field. The model incorporates quartic or sextic self-interactions in the scalar Lagrangian, which support the existence of stationary, solitonic, gravitationally bound solutions. We numerically construct these multi-component systems and investigate how the self-interactions alter their global properties−specifically the Arnowitt-Deser-Misner (ADM) mass M, the angular momentum J and the morphology of their ergospheres. A central result is the distinct dependence of the (ω , M) and (ω , J) relations on the parity of the chains. Specifically, systems with an even number of constituents display spiraling curves, while those with an odd number exhibit loop structures. Moreover, we observe that two initially distinct ergospheres merge into a single one as the frequency ω increases. Our analysis also indicates that the quartic interaction imposes more restrictive existence bounds, particularly for odd-numbered chains, thereby restricting stable configurations to the weak-coupling regime. In contrast, the sextic interaction has a weaker effect and enables stable solutions at substantially stronger couplings. [ABSTRACT FROM AUTHOR] |
|---|---|
| ISSN: | 14346044 |
| DOI: | 10.1140/epjc/s10052-026-15332-9 |
