3 papers
hep-th2026
de Sitter corrections to supertranslation Ward identity and soft graviton theorem
Pratik Chattopadhyay, Divyesh N. Solanki
We study the tree-level scattering of massless scalars followed by an emission of a soft graviton in the small compact region inside the static patch in de Sitter space. We derive…
hep-th2025
Perturbative soft graviton theorems in de Sitter spacetime
Divyesh N. Solanki, Pratik Chattopadhyay, Srijit Bhattacharjee
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 d…
gr-qc2025
Supertranslations at Spatial and Timelike Infinities in the First-Order Formalism
Divyesh N. Solanki, Srijit Bhattacharjee
We study supertranslations at spatial and future timelike infinity in the first-order formalism. We relax the Ashtekar-Engle-Sloan boundary conditions to allow supertranslations at…