Large quantum gravity effects and nonlocal variables

TL;DR

This paper revisits a quantum gravity model within the Null Surface Formulation, showing that small deviations in the fundamental variable Z lead to large metric fluctuations, highlighting the model's sensitivity.

Contribution

It demonstrates that in the NSF-based quantum gravity model, fluctuations in Z remain small despite large metric fluctuations caused by deviations.

Findings

Small deviations in Z cause large metric fluctuations

Fluctuations in Z remain small despite large metric fluctuations

Revisits quantum gravity effects in the NSF framework

Abstract

We reconsider here the model where large quantum gravity effects were first found, but now in its Null Surface Formulation (NSF). We find that although the set of coherent states for $Z$, the basic variable of NSF, is as restricted as it is the one for the metric, while some type of small deviations from these states may cause huge fluctuations on the metric, the corresponding fluctuations on $Z$ remain small.