Hairy black holes in extended Einstein-Maxwell-scalar theories with magnetic charge and kinetic couplings
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arXiv
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| Natura: | Preprint |
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2024
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| author | Taniguchi, Kitaro Takagishi, Shinta Kase, Ryotaro |
| author_facet | Taniguchi, Kitaro Takagishi, Shinta Kase, Ryotaro |
| contents | We study black hole (BH) solutions in extended Einstein-Maxwell-scalar theories, which are classified in a subclass of the $U(1)$ gauge-invariant scalar-vector-tensor theories. The scalar field is coupled to the vector field, which has electric and magnetic charges. For the static and spherically symmetric spacetime, we investigate modifications to the Reissner-Nordström solutions focusing on the three types of scalar-vector interactions, including derivative couplings. We solve the field equations analytically in two asymptotic regions which are the vicinity of the BH horizon and the spatial infinity, and clarify the condition for the existence of scalar hair. To understand the behaviors of solutions in intermediate scales, the field equations are integrated numerically for concrete models with different types of couplings. We find new hairy BH solutions with scalar hair in the presence of magnetic charge and kinetic coupling. The magnetic charge plays an important role in distinguishing hairy BH solutions originated from three types of different interactions at a large coupling limit. |
| format | Preprint |
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arxiv_https___arxiv_org_abs_2403_17484 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Hairy black holes in extended Einstein-Maxwell-scalar theories with magnetic charge and kinetic couplings Taniguchi, Kitaro Takagishi, Shinta Kase, Ryotaro General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory We study black hole (BH) solutions in extended Einstein-Maxwell-scalar theories, which are classified in a subclass of the $U(1)$ gauge-invariant scalar-vector-tensor theories. The scalar field is coupled to the vector field, which has electric and magnetic charges. For the static and spherically symmetric spacetime, we investigate modifications to the Reissner-Nordström solutions focusing on the three types of scalar-vector interactions, including derivative couplings. We solve the field equations analytically in two asymptotic regions which are the vicinity of the BH horizon and the spatial infinity, and clarify the condition for the existence of scalar hair. To understand the behaviors of solutions in intermediate scales, the field equations are integrated numerically for concrete models with different types of couplings. We find new hairy BH solutions with scalar hair in the presence of magnetic charge and kinetic coupling. The magnetic charge plays an important role in distinguishing hairy BH solutions originated from three types of different interactions at a large coupling limit. |
| title | Hairy black holes in extended Einstein-Maxwell-scalar theories with magnetic charge and kinetic couplings |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Phenomenology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2403.17484 |