Work

Resumming fermion loops for inflationary gravity

Year: 2025

Type: article

Abstract: We compute the 1-loop contribution to the graviton self-energy from a loop of massless fermions on a general cosmological background. The result is used to quantum-correct the linearized Einstein equation on de Sitter background and work out 1-loop corrections to gravitational radiation and to the response to a point mass. The renormalization group is employed to sum these to all orders for as long as the de Sitter phase persists.

Source: Physics Letters B

DOI: 10.1016/j.physletb.2025.139649

Authors: A.J. Foraci, R.P. Woodard

Institution: University of Florida

Language: English

Topic: Cosmology and Gravitation Theories

Subfield: Astronomy and Astrophysics

Field: Physics and Astronomy

Domain: Physical Sciences

Open Access status: diamond

Funders: National Science Foundation, University of Florida

Award: Quantum Field Theory and Cosmology