Perturbative soft graviton theorems in de Sitter spacetime
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arXiv
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| Hauptverfasser: | , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866909944639389696 |
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| author | Solanki, Divyesh N. Chattopadhyay, Pratik Bhattacharjee, Srijit |
| author_facet | Solanki, Divyesh N. Chattopadhyay, Pratik Bhattacharjee, Srijit |
| contents | We consider soft graviton scattering for a theory where Einstein's gravity is minimally coupled to a scalar field in the presence of a cosmological constant, i.e. in a background de Sitter space. Employing a perturbative expansion in a small cosmological constant, we compute leading, subleading and sub-subleading corrections to Weinberg's soft graviton amplitude for the tree-level scatterings in the static patch of de Sitter space. We observe similar universal features of the soft graviton amplitude as found in [JHEP10(2023)055] for the soft photons. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2502_03481 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Perturbative soft graviton theorems in de Sitter spacetime Solanki, Divyesh N. Chattopadhyay, Pratik Bhattacharjee, Srijit High Energy Physics - Theory General Relativity and Quantum Cosmology We consider soft graviton scattering for a theory where Einstein's gravity is minimally coupled to a scalar field in the presence of a cosmological constant, i.e. in a background de Sitter space. Employing a perturbative expansion in a small cosmological constant, we compute leading, subleading and sub-subleading corrections to Weinberg's soft graviton amplitude for the tree-level scatterings in the static patch of de Sitter space. We observe similar universal features of the soft graviton amplitude as found in [JHEP10(2023)055] for the soft photons. |
| title | Perturbative soft graviton theorems in de Sitter spacetime |
| topic | High Energy Physics - Theory General Relativity and Quantum Cosmology |
| url | https://arxiv.org/abs/2502.03481 |