CLASSICAL AND QUANTUM GRAVITY, cilt.42, sa.3, ss.1-47, 2025 (SCI-Expanded, Scopus)
The unification of quantum mechanics and general relativity has long
been elusive. Only recently have empirical predictions of various
possible theories of quantum gravity been put to test, where a clear
signal of quantum properties of gravity is still missing. The dawn of
multi-messenger high-energy astrophysics has been tremendously
beneficial, as it allows us to study particles with much higher energies
and travelling much longer distances than possible in terrestrial
experiments, but more progress is needed on several fronts. A thorough
appraisal of current strategies and experimental frameworks, regarding
quantum gravity phenomenology, is provided here. Our aim is twofold: a
description of tentative multimessenger explorations, plus a focus on
future detection experiments. As the outlook of the network of
researchers that formed through the COST Action CA18108 ‘Quantum gravity
phenomenology in the multi-messenger approach (QG-MM)’, in this work we
give an overview of the desiderata that future theoretical frameworks,
observational facilities, and data-sharing policies should satisfy in
order to advance the cause of quantum gravity phenomenology.