Effective graviton mass in de Sitter space

2023/11/18 by Damir Sadekov, Sadekov, Damir · 2 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Theory (hep-th) #Relativity and Gravitational Theory

paper · pdf · doi:10.48550/arxiv.2311.11053

openalex publication_date 2023/11/18 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We calculate the effective mass of gravitational perturbations induced by the interaction of the classical gravitational field with quantum matter in the background of the Poincaré patch of de Sitter space. Using the Schwinger-Keldysh diagrammatic technique, the one-loop effective action is calculated and it is shown that the graviton does not acquire mass for the most symmetric Bunch-Davies state. However, we have shown that even in this case, there is a nontrivial modification of the theory at one loop in the scalar sector of gravity.

Cited by

• Entropy of de Sitter (d+1)-spacetime: modification of the Gibbons-Hawking entropy of cosmological horizon
• Massless graviton in de Sitter as second sound in two-fluid hydrodynamics

Related

• On the Gravitational Wave in de Sitter Spacetime
• Graviton one-loop effective action and inflationary dynamics
• Vacuum Structure of de Sitter Space
• A Possible Mechanism of Gravity
• Quantum gravitational effects in de Sitter space