Charged, rotating black holes in Einstein-Maxwell-dilaton theory
Fuente:
arXiv
Salvato in:
| Autori principali: | , , |
|---|---|
| Natura: | Preprint |
| Pubblicazione: |
2025
|
| Soggetti: | |
| Accesso online: | |
| Tags: |
Aggiungi Tag
Nessun Tag, puoi essere il primo ad aggiungerne!!
|
| _version_ | 1866910219781537792 |
|---|---|
| author | Herdeiro, Carlos Radu, Eugen Filho, Etevaldo dos Santos Costa |
| author_facet | Herdeiro, Carlos Radu, Eugen Filho, Etevaldo dos Santos Costa |
| contents | The asymptotically flat, electrically charged, rotating black holes (BHs) in Einstein-Maxwell-dilaton (EMd) theory are known in closed form for \textit{only} two particular values of the dilaton coupling constant $γ$: the Einstein-Maxwell coupling ($γ=0$), corresponding to the Kerr-Newman (KN) solution, and the Kaluza-Klein coupling ($γ=\sqrt{3}$). Rotating solutions with arbitrary $γ$ are known only in the slow-rotation or weakly charged limits. In this work, we numerically construct such EMd BHs with arbitrary $γ$. We present an overview of the parameter space of the solutions for illustrative values of $γ$ together with a study of their basic properties. The solutions are in general KN-like; there are however, new features. The data suggest that the spinning solutions with $0<γ<\sqrt{3}$ possess a zero temperature limit, which, albeit regular in terms of curvature invariants, exhibits a $pp$-singularity. A different limiting behaviour is found for $γ>\sqrt{3}$, in which case, moreover, we have found hints of BH non-uniqueness for the same global charges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2506_15798 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Charged, rotating black holes in Einstein-Maxwell-dilaton theory Herdeiro, Carlos Radu, Eugen Filho, Etevaldo dos Santos Costa General Relativity and Quantum Cosmology High Energy Physics - Theory The asymptotically flat, electrically charged, rotating black holes (BHs) in Einstein-Maxwell-dilaton (EMd) theory are known in closed form for \textit{only} two particular values of the dilaton coupling constant $γ$: the Einstein-Maxwell coupling ($γ=0$), corresponding to the Kerr-Newman (KN) solution, and the Kaluza-Klein coupling ($γ=\sqrt{3}$). Rotating solutions with arbitrary $γ$ are known only in the slow-rotation or weakly charged limits. In this work, we numerically construct such EMd BHs with arbitrary $γ$. We present an overview of the parameter space of the solutions for illustrative values of $γ$ together with a study of their basic properties. The solutions are in general KN-like; there are however, new features. The data suggest that the spinning solutions with $0<γ<\sqrt{3}$ possess a zero temperature limit, which, albeit regular in terms of curvature invariants, exhibits a $pp$-singularity. A different limiting behaviour is found for $γ>\sqrt{3}$, in which case, moreover, we have found hints of BH non-uniqueness for the same global charges. |
| title | Charged, rotating black holes in Einstein-Maxwell-dilaton theory |
| topic | General Relativity and Quantum Cosmology High Energy Physics - Theory |
| url | https://arxiv.org/abs/2506.15798 |