The inflationary mechanism in Asymptotically Safe Gravity
General Relativity and Quantum Cosmology
2019-08-13 v1 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
According to the asymptotic safety conjecture, gravity is a renormalizable quantum field theory whose continuum limit is defined by an interacting fixed point of the renormalization group flow. In these proceedings we review some implications of the existence of this non-trivial fixed point in cosmological contexts. Specifically, we discuss a toy model exemplifying how the departure from the fixed-point regime can explain the approximate scale-invariance of the power spectrum of temperature fluctuations in the cosmic microwave background.
Cite
@article{arxiv.1908.03897,
title = {The inflationary mechanism in Asymptotically Safe Gravity},
author = {Alessia Platania},
journal= {arXiv preprint arXiv:1908.03897},
year = {2019}
}
Comments
Prepared for proceedings of the workshop "Quantum Fields - From Fundamental Concepts to Phenomenological Questions"; 16 pages, 1 figure