Class. quantum gravity Class. quantum gravity White paper and roadmap for quantum gravity phenomenology in the multi-messenger era Alves Batista R Amelino-Camelia G Boncioli D Carmona J M Universidad de Zaragoza di Matteo A Gubitosi G Lobo I Mavromatos N E Pfeifer C Rubiera-Garcia D Saridakis E N Terzic T Vagenas E C Vargas Moniz P Abdalla H Adamo M Addazi A Anagnostopoulos F K Antonelli V Asorey M Universidad de Zaragoza Ballesteros A Basilakos S Benisty D Boettcher M Bolmont J Bonilla A Bosso P Bouhmadi-López M Burderi L Campoy-Ordaz A Caroff S Cerci S Cortes J L Universidad de Zaragoza D’Esposito V Das S de Cesare M Demirci M Di Lodovico F Di Salvo T Diego J M Djordjevic G S Domi A Ducobu L Escamilla-Rivera C Fabiano G Fernández-Silvestre D Franchino-Viñas S A Frassino A M Frattulillo D Gaug M Gergely L Á Guendelman E I Guetta D Gutierrez-Sagredo I He P Heefer S Juric T Katori T Kowalski-Glikman J Lambiase G Levi Said J Li C Li H Luciano G G Ma B-Q Marciano A Martinez M Mazumdar A Menezes G Mercati F Minic D Miramonti L Mitsou V A Mustamin M F Navas S Olmo G J Oriti D Övgün A Pantig R C Parvizi A Pasechnik R Pasic V Petruzziello L Platania A Rasouli S M M Rastgoo S Relancio J J Rescic F Reyes M A Universidad de Zaragoza Rosati G Sakalli I Salamida F Sanna A Staicova D Striškovic J Sunar Cerci D Torri M D C Vigliano A Wagner F Wallet J-C Wojnar A Zarikas V Zhu J Zornoza J D 2025 research-article