Quantum gravity phenomenology at the dawn of the multi-messenger era — a review

The exploration of the universe has recently entered a new era thanks to the multi-messenger paradigm, characterized by a continuous increase in the quantity and quality of experimental data that is obtained by the detection of the various cosmic messengers (photons, neutrinos, cosmic rays and gravitational waves) from numerous origins. They give us information about their sources in the universe and the properties of the intergalactic medium. Moreover, multi-messenger astronomy opens up the possibility to search for phenomenological signatures of quantum gravity. On the one hand, the most energetic events allow us to test our physical theories at energy regimes which are not directly accessible in accelerators; on the other hand, tiny effects in the propagation of very high energy particles could be amplified by cosmological distances. After decades of merely theoretical investigations, the possibility of obtaining phenomenological indications of Planck-scale effects is a revolutionary step in the quest for a quantum theory of gravity, but it requires cooperation between different communities of physicists (both theoretical and experimental). This review is aimed at promoting this cooperation by giving a state-of-the art account of the interdisciplinary expertise that is needed in the effective search of quantum gravity footprints in the production, propagation and detection of cosmic messengers.

This review is the outcome of the collective efforts of the participants of the COST Action CA18108 “Quantum Gravity Phenomenology in the multi-messenger approach”, and expresses a very fruitful collaboration between the theorists, phenomenologists, and experimentalists that participate in this endeavor. It is complemented by a catalogue, the QG-MM Catalogue, containing experimental bounds of QG effects on astrophysical data.

The review is currently available on arXiv 2111.05659 [hep-ph] and has been submitted to Progress in Particle and Nuclear Physics.

Review Editors:

Alves Batista, RafaelAmelino-Camelia, Giovanni
Bolmont, JulienBoncioli, Denise
Calcagni, GianlucaCarmona, José Manuel
Cortes, Jose Luisdi Matteo, Armando
Dominis Prester, DijanaEscamilla-Rivera, Celia
Gubitosi, GiuliaHaegel, Leïla
Hinderer, TanjaKowalski-Glikman, Jerzy
Liberati, StefanoMartinez, Manel
Mavromatos, NikolaosMercati, Flavio
Nardini, GermanoPérez de los Heros, Carlos
Pfeifer, ChristianRastgoo, Saeed
Risse, MarkusSalamida, Francesco
Sigl, GuenterSitarek, Julian
Terzić, TomislavTórtola, Mariam

Section Coordinators:

Alvarez-Muniz, JaimeAntonelli, VitoBallesteros, Angel
Baret, BrunyBirnholtz, OfekBolmont, Julien
Calcagni, GianlucaCapozziello, SalvatoreChernyakov, Maria
Clesse, SebastienCortes, Jose LuisDas, Saurya
Eichhorn, AstridF. Sopuerta, CarlosGent, Alasdair
Gergely, László ÁrpádGiammarchi, MarcoGlicenstein, Jean-François
Haegel, LeïlaJetzer, PhilippeJoaquim, Filipe Rafael
Kampert, Karl-HeinzKatori, TeppeiKerszberg, Daniel
Kuroyanagi, SachikoLobo, Iarley P.Manganaro, Marina
Martinez, ManelMartinez, MarioMartínez-Huerta, Humberto
Mattingly, DavidMazumdar, AnupamMielczarek, Jakub
Miller, Andrew LawrenceMinic, DjordjeMiramonti, Lino
Moniz, PauloNardini, GermanoNielsen, Alex
Oikonomou, FoteiniOriti, DanielePaganini, Claudio Francesco
Palomares-Ruiz, SergioPfeifer, ChristianRastgoo, Saeed
Relancio, José JavierRicciardone, AngeloRosati, Giacomo
Sakellariadou, MairiSatunin, PetrSchüssler, Fabian
Sitarek, JulianSotiriou, Thomas P.Stergioulas, Nikolaos
Stoica, SabinTernes, Christoph AndreasTerzić, Tomislav
Thiemann, ThomasTinyakov, PeterTrześniewski, Tomasz
Tureanu, AncaUrban, FedericoVagenas, Elias

QG-MM Catalogue implementation (

Martínez-Miravé, PabloReyes, Maykoll A.
Strišković, JelenaTrimarelli, Caterina