# On the graviton two-point function and its infrared behavior in de Sitter spacetime

## TL;DR

This paper clarifies the origin of contradictions regarding the infrared behavior of the graviton two-point function in de Sitter spacetime, emphasizing the universal nature of symmetry breaking and infrared divergences.

## Contribution

It resolves a scientific dispute by explaining the universal symmetry breaking and infrared divergences in the graviton two-point function in de Sitter space.

## Key findings

- Infrared divergences cannot be gauged away.
- De Sitter symmetry breaking is universal.
- Clarification of the origin of previous contradictions.

## Abstract

In our previous paper (Phys. Rev. D 94, 104030 (2016)), inspired by the work of Allen and Turyn (Nucl. Phys. B 292, 813 (1987)), we expressed the graviton two-point function in terms of maximally symmetric bitensors in de Sitter spacetime. Quite contrary to the result of their work, however, we explicitly showed that the de Sitter symmetry breaking is universal and the associated infrared divergences cannot be gauged away. In this Letter, the origin of this contradiction, which is greatly related to the well-known scientific dispute about the infrared behavior of the graviton two-point function, is clarified.