Asymptotic Safety and the Cosmic Coincidence Problem

TL;DR

This paper explores how the Asymptotic Safety paradigm in quantum gravity can naturally explain the universe's accelerated expansion and the cosmic coincidence problem, through modified Einstein equations and cosmological implications.

Contribution

It introduces a new set of modified Einstein equations inspired by the AS framework and analyzes their cosmological consequences, providing a potential explanation for dark energy and cosmic coincidence.

Findings

AS framework offers a natural explanation for cosmic acceleration

Modified Einstein equations align with large-scale structure observations

Potential resolution of the cosmic coincidence problem

Abstract

Asymptotic Safety (AS) Paradigm is an interesting set of ideas and methods towards a meaningful quantization of Gravity. A brief review of phenomenological consequences in the context of AS regarding cosmology with emphasis on dark energy is given. Furthermore, recent studies that suggest a natural explanation of the recent cosmic acceleration and its coincidence using large-scale structure and AS framework will be analyzed. Finally, the present work extends the analysis of a recent new set of modified Einstein equations inspired from AS program.