MeV dark energy emission from a de Sitter Universe

TL;DR

This paper predicts a detectable gamma-ray signal around 29.5 MeV from dark energy emission in a de Sitter universe, proposing an observational test to distinguish late stationary universe models from accelerated ones.

Contribution

It introduces a novel prediction of MeV gamma-ray emission from dark energy in a de Sitter universe, suggesting observational tests beyond current gamma-ray experiments.

Findings

Predicted gamma-ray peak at 29.5 MeV from dark energy decay.

Possible detection of non-standard photons in future gamma-ray observations.

Supports the idea of a late stationary universe with continuous non-standard radiation creation.

Abstract

The evolution of a de Sitter Universe is the base for both the accelerated Universe and the late stationary Universe. So how do we differentiate between both universes? In this paper, we state that it is not possible to design an experiment using luminous or angular distances to distinguish between both cases because they are the same during the de Sitter phase. However, this equivalence allows us to predict a signal of it a constant dark energy emission with a signal peak around 29.5 MeV, in where according to our astrophysical test of survival probability, the radiation must be non-standard photons. Remarkably, experiments beyond EGRET and COMPTEL could observe an excess of gamma photons in this predicted region, coming from a possible decay process of the dark energy emission, which might constitute the possible smoking gun of a late stationary Universe with the continuous creation of non-standard radiation, an alternative approach to understand the current stages of the Universe evolution.