Francesco Sannino, special HET seminar, Living on the edge: Quantum black hole physics from the event horizon

Friday 7 Jun 2024, 12:30 → 14:30 US/Eastern

2-160

https://bnl.zoomgov.com/j/1601352829?pwd=ZE4ramZUYjJyR0xzK2VXWCtUTU55QT09#success

 

Abstract: I will employ a particle physics approach to uncover universal insights into the quantum properties of black holes. Specifically, for spherically symmetric and static black holes, I will begin by representing the quantum metric in terms of a physically meaningful parameter. Subsequently, by assuming a minimal level of regularity at the black hole's horizon, I will derive explicit series expansions of the metric. This framework will enable us to calculate essential thermodynamic quantities of the black hole, including the Hawking temperature and entropy, using model-independent expressions that extend beyond the limitations of a large mass expansion. Furthermore, when imposing the requirement of the absence of curvature singularities at the horizon, I will deduce general consistency conditions for the metric deformations. The significance of these conditions will become evident as I will demonstrate their violation by well-known models present in the existing literature. The approach is relevant for several applications ranging from a deeper understanding of the nature of the space and time to (astro) particle physics and cosmology.