Perturbative soft graviton theorems in de Sitter spacetime
A bstract 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 JHEP 10 (2023) 055 for the soft photons.
Authors
- Srijit Bhattacharjee (ORCID: https://orcid.org/0000-0003-1145-2267)
- Divyesh N. Solanki (ORCID: https://orcid.org/0000-0003-4433-3301)
- Pratik Chattopadhyay (ORCID: https://orcid.org/0000-0002-5131-6334)
Institutions
- University of Electronic Science and Technology of China (CN)
- Shanghai Jiao Tong University (CN)
- Indian Institute of Information Technology Allahabad (IN)
Publication Details
- Journal
- Journal of High Energy Physics
- Published
- 2025-12-01
- DOI
- https://doi.org/10.1007/jhep12(2025)008
- Citations
- 1
- Primary Topic
- Black Holes and Theoretical Physics
- Type
- article
- Field-Weighted Citation Impact
- 1.87
Funders
- Arthritis National Research Foundation
- Department of Science and Technology, Ministry of Science and Technology, India
- Science and Engineering Research Board