Question

How to describe the strength of gravity in LQG?

Answer 1

In general relativity we have free falling observers who feel no gravity. and equations for geodesics. There are tools that describe the strength of gravitation field for a given observer.

In Are loop quantum cosmos never singular?by Parampreet Singh from the Perimeter Institute I read:

An open question is the way quantum gravitational effects change the picture near above extremal events. This can be asked in different ways: Does quantum gravity resolve all spacelike singularities? Do quantum gravity effects always bound the spacetime curvature? Are geodesics complete (if their notion exists in a quantum spacetime)? What does the singularity resolution or the lack of it tell us about the underlying theory? Since we do not yet have a complete theory of quantum gravity these questions cannot yet be answered in full generality. However, they can be posed for cosmological singularities in a simplified setting such as a homogeneous universe where mini-superspace quantizations are available