https://doi.org/10.1140/epjc/s10052-024-12536-9
Regular Article - Theoretical Physics
Rotating hybrid axion-miniboson stars
Research Center of Gravitation and Institute of Theoretical Physics and Key Laboratory for Magnetism and Magnetic of the Ministry of Education, Lanzhou University, 730000, Lanzhou, China
Received:
8
September
2023
Accepted:
9
February
2024
Published online:
25
February
2024
We construct rotating hybrid axion-miniboson stars (RHABSs), which are asymptotically flat, stationary, axially symmetric solutions of (3+1)-dimensional Einstein–Klein–Gordon theory. RHABSs consist of an axion field (ground state) and a free complex scalar field (first excited state). The solutions of RHABSs have two types of nodes, including 
state and 
state. For different axion decay constants 
, we present the mass M of RHABSs as a function of the synchronized frequency, as well as the nonsynchronized frequency, and explore the mass M versus the angular momentum J for the synchronized frequency and the nonsynchronized frequency, respectively. Furthermore, we study the effect of axion decay constant and free scalar field mass 
on the existence domain of the synchronized frequency 
.
© The Author(s) 2024
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