Carballo Rubio, RaúlFilippo, Francesco DiLiberati, StefanoVisser, MattArrechea, JulioBarceló, CarlosBonanno, AlfioBorissova, JohannaBoyanov, ValentinCardoso, VitorPorro, Francesco DelEichhorn, AstridJampolski, DanielMartín Moruno, María Del PradoMazza, JacopoMcMaken, TylerPanassiti, AntonioPani, PaoloPlatania, AlessiaRezzolla, LucianoVellucci, Vania2025-12-042025-12-042025-05-01Carballo-Rubio R, Filippo F D, Liberati S, Visser M, Arrechea J, Barceló C, Bonanno A, Borissova J, Boyanov V, Cardoso V, Porro F D, Eichhorn A, Jampolski D, Martín-Moruno P, Mazza J, McMaken T, Panassiti A, Pani P, Platania A, Rezzolla L and Vellucci V 2025 Towards a non-singular paradigm of black hole physics J. Cosmol. Astropart. Phys. 2025 00310.1088/1475-7516/2025/05/003https://hdl.handle.net/20.500.14352/128493© 2025 The Author(s) PRIMUS/23/SCI/005 UNCE24/SCI/016 Grant. No. 184 VIL60819The study of regular black holes and black hole mimickers as alternatives to standard black holes has recently gained significant attention, driven both by the need to extend general relativity to describe black hole interiors, and by recent advances in observational technologies. Despite considerable progress in this field, significant challenges remain in identifying and characterizing physically well-motivated classes of regular black holes and black hole mimickers. This paper provides an overview of these challenges, and outlines some of the promising research directions — as discussed during a week-long focus program held at the Institute for Fundamental Physics of the Universe (IFPU) in Trieste from November 11th to 15th, 2024.engAttribution 4.0 Internationalhttp://creativecommons.org/licenses/by/4.0/journal article1475-7516https://doi.org/10.1088/1475-7516/2025/05/003https://iopscience.iop.org/article/10.1088/1475-7516/2025/05/003open access53524.8530.12GravastarsGravitational waves in GR and beyond- theoryQuantum black holeQuantum fields in curved spacetimesFísica (Física)Astrofísica (Matemáticas)Astrofísica (Matemáticas)2212 Física Teórica21 Astronomía y Astrofísica2212.14 Teoría de la Relatividad