Testing the universality of quantum gravity theories with cosmic messengers in the context of DSR theories

TL;DR

This paper investigates the potential to test quantum gravity theories, specifically DSR models, using cosmic messengers to analyze their effects on different particles and compare with astrophysical observations.

Contribution

It introduces a framework for testing DSR theories' predictions on universal and particle-specific quantum gravity corrections through astrophysical phenomena.

Findings

DSR models can produce distinguishable effects on different particle species.

Astroparticle observations can constrain or support DSR theories.

The framework allows testing the universality of quantum gravity effects.

Abstract

Recently there have been several studies devoted to the investigation of the fate of fundamental relativistic symmetries at the foreseen unification of gravity and quantum regime, that is the Planck scale. In order to preserve covariance of the formulation even if in an amended formulation, new mathematical tools are required. In this work, we consider DSR theories that modify covariance by introducing a non-trivial structure in momentum space. Additionally, we explore the possibility of investigating both universal quantum gravity corrections and scenarios where different particle species are corrected differently within the framework of these models. Several astroparticle phenomena are then analyzed to test the phenomenological predictions of DSR models.