Conformally Coupled Induced Gravity as an Infrared Fixed Point

TL;DR

This paper demonstrates that conformally coupled induced gravity can serve as an infrared fixed point, providing a new perspective on late-time cosmology and dark energy through emergent conformal symmetry.

Contribution

It introduces conformally coupled induced gravity as an infrared fixed point and derives exact cosmological equations linking it to dark energy and observational data.

Findings

Conformally coupled induced gravity acts as an infrared fixed point.

Emergent global conformal symmetry in late-time cosmology.

Quantitative agreement with recent cosmic expansion observations.

Abstract

We have found that the conformally coupled induced gravity can be an infrared fixed point of induced gravity with Yukawa couplings with matter. The late time cosmology with a uniform mean matter distribution can be described by the conformally coupled induced gravity, which has an emergent global conformal symmetry in the cosmic scale. Aiming to resolve the puzzles for the dark energy, we have obtained exact cosmological equations and determined the dark energy density, the matter density, and the jerk parameter in the present universe based on the recent observational cosmic expansion data for $a/H^{2}$.