De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety
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arXiv
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| Autori principali: | , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| _version_ | 1866917924196843520 |
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| author | D'Angelo, Edoardo Ferrero, Renata Fröb, Markus B. |
| author_facet | D'Angelo, Edoardo Ferrero, Renata Fröb, Markus B. |
| contents | Recent technical and conceptual advancements in the asymptotic safety approach to quantum gravity have enabled studies of the UV completion of Lorentzian Einstein gravity, emphasizing the role of the state dependence. We present here the first complete investigation of the flow equations of the Einstein-Hilbert action within a cosmological spacetime, namely de Sitter spacetime. Using the newly derived graviton propagator for general gauges and masses in de Sitter spacetime, we analyze the dependence on the gauge and on finite renormalization parameters. Our results provide evidence of a UV fixed point for the most commonly used gauges. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_05135 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety D'Angelo, Edoardo Ferrero, Renata Fröb, Markus B. High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics Recent technical and conceptual advancements in the asymptotic safety approach to quantum gravity have enabled studies of the UV completion of Lorentzian Einstein gravity, emphasizing the role of the state dependence. We present here the first complete investigation of the flow equations of the Einstein-Hilbert action within a cosmological spacetime, namely de Sitter spacetime. Using the newly derived graviton propagator for general gauges and masses in de Sitter spacetime, we analyze the dependence on the gauge and on finite renormalization parameters. Our results provide evidence of a UV fixed point for the most commonly used gauges. |
| title | De Sitter quantum gravity within the covariant Lorentzian approach to asymptotic safety |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology Mathematical Physics |
| url | https://arxiv.org/abs/2502.05135 |