English

Curvature dependence of quantum gravity

High Energy Physics - Theory 2019-11-28 v2 General Relativity and Quantum Cosmology

Abstract

We investigate the phase diagram of quantum gravity with a vertex expansion about constantly-curved backgrounds. The graviton two- and three-point function are evaluated with a spectral sum on a sphere. We obtain, for the first time, curvature-dependent UV fixed point functions of the dynamical fluctuation couplings g(R)g^*(R), μ(R)\mu^*(R), and λ3(R)\lambda_3^*(R), and the background f(R)f(R)-potential. Based on these fixed point functions we compute solutions to the quantum and the background equation of motion with and without Standard Model matter. We have checked that the solutions are robust against changes of the truncation.

Keywords

Cite

@article{arxiv.1711.09259,
  title  = {Curvature dependence of quantum gravity},
  author = {Nicolai Christiansen and Kevin Falls and Jan M. Pawlowski and Manuel Reichert},
  journal= {arXiv preprint arXiv:1711.09259},
  year   = {2019}
}

Comments

18 pages, 9 figures; v2: typos corrected, refs updated

R2 v1 2026-06-22T22:56:49.133Z