Random versus holographic fluctuations of the background metric. II. Note on the dark energies arising due to microstructure of space-time

TL;DR

This paper compares random and holographic models of background metric fluctuations as potential explanations for dark energy, concluding that random fluctuation models are more favored based on uncertainty relations.

Contribution

It provides a comparative analysis of random versus holographic fluctuations of the background metric in the context of dark energy models, emphasizing the preference for random fluctuations.

Findings

Random fluctuation models are favored over holographic ones.

Dark energy models based on background metric fluctuations are linked to uncertainty relations.

The study supports the idea that dark energy arises from space-time microstructure.

Abstract

Over the last few years a certain class of dark-energy models decaying inversely proportional to the square of the horizon distance emerged on the basis either of Heisenberg uncertainty relations or of the uncertainty relation between the four-volume and the cosmological constant. The very nature of these dark energies is understood to be the same, namely it is the energy of background space/metric fluctuations. Putting together these uncertainty relations one finds that the model of random fluctuations of the background metric is favored over the holographic one.