Soft theorems in de Sitter spacetime
High Energy Physics - Theory
2024-01-11 v2 General Relativity and Quantum Cosmology
Abstract
In this paper, we derive a soft photon theorem and a soft gluon theorem in the de Sitter spacetime from the Ward identity of the near cosmological horizon large gauge transformation. Taking the flat limit of the de Sitter spacetime, the soft theorems naturally recover the corresponding flat spacetime soft theorems.
Cite
@article{arxiv.2308.08861,
title = {Soft theorems in de Sitter spacetime},
author = {Pujian Mao and Kai-Yu Zhang},
journal= {arXiv preprint arXiv:2308.08861},
year = {2024}
}
Comments
minor revision with clarification of the horizon antipodal matching, published version