Starts 26 Aug 2025 16:00
Ends 26 Aug 2025 17:00
Central European Time
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HECAP Seminar - Dynamical Formation of Regular Black Holes
Hybrid
Leonardo Building - Luigi Stasi Seminar Room and on Zoom
Abstract
I will show that regular black holes arise as the unique spherically symmetric solutions of broad families of generalizations of Einstein gravity involving infinite towers of higher-curvature corrections in D≥5 spacetime dimensions. Our results are facilitated by the use of a class of theories that possess second-order equations on spherically symmetric metrics, but which are general enough to provide a basis for the gravitational effective action. I will argue that such regular black holes arise as the byproduct of gravitational collapse within these theories. Generically, spherical stars or shells collapse until they reach a minimum size inside the inner horizon of the black hole they create. Then, they bounce back and reappear through a white hole in a different universe, where they eventually reach their original size, restarting the process. I will also mention several ongoing research directions.
I will show that regular black holes arise as the unique spherically symmetric solutions of broad families of generalizations of Einstein gravity involving infinite towers of higher-curvature corrections in D≥5 spacetime dimensions. Our results are facilitated by the use of a class of theories that possess second-order equations on spherically symmetric metrics, but which are general enough to provide a basis for the gravitational effective action. I will argue that such regular black holes arise as the byproduct of gravitational collapse within these theories. Generically, spherical stars or shells collapse until they reach a minimum size inside the inner horizon of the black hole they create. Then, they bounce back and reappear through a white hole in a different universe, where they eventually reach their original size, restarting the process. I will also mention several ongoing research directions.