Screening of dipolar emission in two-scale Gauss-Bonnet gravity
Fuente:
arXiv
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| Autori principali: | , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866909942067232768 |
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| author | Thaalba, Farid Gualtieri, Leonardo Sotiriou, Thomas P. Trincherini, Enrico |
| author_facet | Thaalba, Farid Gualtieri, Leonardo Sotiriou, Thomas P. Trincherini, Enrico |
| contents | We study black holes in shift-symmetric scalar Gauss-Bonnet gravity extended by a cubic Galileon interaction with a distinct energy scale. Introducing this hierarchy profoundly modifies the theory's phenomenology. The cubic interaction allows for smaller black holes, and can generate a screening mechanism near the horizon, making large Gauss-Bonnet couplings consistent with gravitational-wave bounds. Observable quantities such as the scalar charge, the innermost stable circular orbit, and its frequency are most affected for small black holes. The resulting multi-scale effective field theory remains technically natural and offers new avenues to probe gravity in the strong-field regime. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_04083 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Screening of dipolar emission in two-scale Gauss-Bonnet gravity Thaalba, Farid Gualtieri, Leonardo Sotiriou, Thomas P. Trincherini, Enrico General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory We study black holes in shift-symmetric scalar Gauss-Bonnet gravity extended by a cubic Galileon interaction with a distinct energy scale. Introducing this hierarchy profoundly modifies the theory's phenomenology. The cubic interaction allows for smaller black holes, and can generate a screening mechanism near the horizon, making large Gauss-Bonnet couplings consistent with gravitational-wave bounds. Observable quantities such as the scalar charge, the innermost stable circular orbit, and its frequency are most affected for small black holes. The resulting multi-scale effective field theory remains technically natural and offers new avenues to probe gravity in the strong-field regime. |
| title | Screening of dipolar emission in two-scale Gauss-Bonnet gravity |
| topic | General Relativity and Quantum Cosmology High Energy Astrophysical Phenomena High Energy Physics - Theory |
| url | https://arxiv.org/abs/2512.04083 |