Rotating scalarized supermassive black holes
Abstract In this study, we investigate rotating black hole solutions within a scalar-Gauss–Bonnet gravity framework that incorporates a squared Gauss–Bonnet term. By employing a quadratic–exponential coupling function between the scalar field and the Gauss–Bonnet invariant, we derive both the standa...
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| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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SpringerOpen
2025-08-01
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| Series: | European Physical Journal C: Particles and Fields |
| Online Access: | https://doi.org/10.1140/epjc/s10052-025-14567-2 |
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| _version_ | 1849761645926023168 |
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| author | Shoupan Liu Yunqi Liu Yan Peng Cheng-Yong Zhang |
| author_facet | Shoupan Liu Yunqi Liu Yan Peng Cheng-Yong Zhang |
| author_sort | Shoupan Liu |
| collection | DOAJ |
| description | Abstract In this study, we investigate rotating black hole solutions within a scalar-Gauss–Bonnet gravity framework that incorporates a squared Gauss–Bonnet term. By employing a quadratic–exponential coupling function between the scalar field and the Gauss–Bonnet invariant, we derive both the standard General Relativity solutions and novel scalarized black hole configurations. Utilizing a pseudo-spectral method to solve the coupled field equations, we examine how black hole spin and coupling constants influence the existence and properties of these solutions. Our findings reveal that both the rotation of the black hole and the squared coupling term effectively constrain the parameter space available for scalarization. Moreover, we demonstrate that, over a wide range of parameters, scalarized black holes exhibit higher entropy than Kerr black holes of equivalent mass and spin, indicating that they are thermodynamically favored. These results significantly expand the phase space of black holes in modified gravity theories. |
| format | Article |
| id | doaj-art-ebd014a6f3c8451397a5286c27e4b04e |
| institution | DOAJ |
| issn | 1434-6052 |
| language | English |
| publishDate | 2025-08-01 |
| publisher | SpringerOpen |
| record_format | Article |
| series | European Physical Journal C: Particles and Fields |
| spelling | doaj-art-ebd014a6f3c8451397a5286c27e4b04e2025-08-20T03:05:56ZengSpringerOpenEuropean Physical Journal C: Particles and Fields1434-60522025-08-0185811410.1140/epjc/s10052-025-14567-2Rotating scalarized supermassive black holesShoupan Liu0Yunqi Liu1Yan Peng2Cheng-Yong Zhang3Center for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou UniversityCenter for Gravitation and Cosmology, College of Physical Science and Technology, Yangzhou UniversitySchool of Mathematical Sciences, Qufu Normal UniversityDepartment of Physics and Siyuan Laboratory, Jinan UniversityAbstract In this study, we investigate rotating black hole solutions within a scalar-Gauss–Bonnet gravity framework that incorporates a squared Gauss–Bonnet term. By employing a quadratic–exponential coupling function between the scalar field and the Gauss–Bonnet invariant, we derive both the standard General Relativity solutions and novel scalarized black hole configurations. Utilizing a pseudo-spectral method to solve the coupled field equations, we examine how black hole spin and coupling constants influence the existence and properties of these solutions. Our findings reveal that both the rotation of the black hole and the squared coupling term effectively constrain the parameter space available for scalarization. Moreover, we demonstrate that, over a wide range of parameters, scalarized black holes exhibit higher entropy than Kerr black holes of equivalent mass and spin, indicating that they are thermodynamically favored. These results significantly expand the phase space of black holes in modified gravity theories.https://doi.org/10.1140/epjc/s10052-025-14567-2 |
| spellingShingle | Shoupan Liu Yunqi Liu Yan Peng Cheng-Yong Zhang Rotating scalarized supermassive black holes European Physical Journal C: Particles and Fields |
| title | Rotating scalarized supermassive black holes |
| title_full | Rotating scalarized supermassive black holes |
| title_fullStr | Rotating scalarized supermassive black holes |
| title_full_unstemmed | Rotating scalarized supermassive black holes |
| title_short | Rotating scalarized supermassive black holes |
| title_sort | rotating scalarized supermassive black holes |
| url | https://doi.org/10.1140/epjc/s10052-025-14567-2 |
| work_keys_str_mv | AT shoupanliu rotatingscalarizedsupermassiveblackholes AT yunqiliu rotatingscalarizedsupermassiveblackholes AT yanpeng rotatingscalarizedsupermassiveblackholes AT chengyongzhang rotatingscalarizedsupermassiveblackholes |