# Asymptotically Free Mimetic Gravity

**Authors:** Ali H. Chamseddine, Viatcheslav Mukhanov, Tobias Russ

arXiv: 1905.01343 · 2020-08-05

## TL;DR

This paper introduces a mimetic gravity model where the gravitational constant diminishes at high curvature, preventing singularities and leading to de Sitter-like solutions, with quantum fluctuations vanishing at the limiting curvature.

## Contribution

It proposes a novel asymptotically free mimetic gravity framework that avoids singularities by making the gravitational constant vanish at a limiting curvature.

## Key findings

- Singularities are avoided in Friedmann and Kasner universes.
- Solutions approach de Sitter space with limiting curvature.
- Quantum metric fluctuations vanish at the limiting curvature.

## Abstract

The idea of "asymptotically free" gravity is implemented using a constrained mimetic scalar field. The effective gravitational constant is assumed to vanish at some limiting curvature. As a result singularities in contracting spatially flat Friedmann and Kasner universes are avoided. The solutions in both cases approach de Sitter metric with a limiting curvature.We show that quantum metric fluctuations vanish when this limiting curvature is approached.

## Full text

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## References

16 references — full list in the complete paper: https://tomesphere.com/paper/1905.01343/full.md

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Source: https://tomesphere.com/paper/1905.01343