On Infrared Effects in de~Sitter Background

TL;DR

This paper estimates higher order quantum gravity corrections to de Sitter spacetime, indicating that graviton self-interactions may cause weaker, power-law growth distortions rather than exponential ones over time.

Contribution

It provides a new estimate of quantum gravity corrections in de Sitter space, suggesting a slower, power-law growth of metric distortions.

Findings

Corrections are weaker than previously thought

Distortions may grow as a power law in time

Implications for stability of de Sitter spacetime

Abstract

We have estimated higher order quantum gravity corrections to de~Sitter spacetime. Our results suggest that, while the classical spacetime metric may be distorted by the graviton self-interactions, the corrections are relatively weaker than previously thought, possibly growing like a power rather than exponentially in time.