On the effect of renormalization group improvement on the cosmological power spectrum
General Relativity and Quantum Cosmology
2018-02-20 v3
Abstract
Asymptotically safe quantum gravity predicts running gravitational and cosmological constants, while it remains a meaningful quantum field theory because of the existence of non-Gaussian ultraviolet fixed points. Here we have investigated the effect of such running couplings on the cosmological perturbations. We have obtained the improved Mukhanov-Sassaki equation and solved it for two models. The effect of asymptotically safe quantum gravity on the cosmological power spectrum is also studied.
Keywords
Cite
@article{arxiv.1703.02733,
title = {On the effect of renormalization group improvement on the cosmological power spectrum},
author = {R. Moti and A. Shojai},
journal= {arXiv preprint arXiv:1703.02733},
year = {2018}
}