Quantum Dust Cores of Black Holes and Their Quasi‐Normal Modes
Abstract
ABSTRACT The quantum description of a gravitationally collapsed ball of dust proposed by R. Casadio is characterised by a linear effective Misner–Sharp–Hernandez mass function describing a matter core hidden by the event horizon. After reviewing the original model and some of its refinements, we investigate the quasi‐normal mode spectrum of the resulting spacetime and compare it with the Schwarzschild case. Computations are performed within the WKB approximation, based on the Padé approximants up to 13th order. Our analysis shows that deviations from the Schwarzschild spectrum are sensitive to the quantum nature of the core surface.
Fields of Study & Subjects
Black Holes and Theoretical Physics
Noncommutative and Quantum Gravity Theories
Quantum Mechanics and Non-Hermitian Physics
Publication details
- Journal / source
- Fortschritte der Physik
- Publisher
- Wiley
- Volume
- 74
- Issue
- 4
- Publication date
- 1 April 2026
- Language
- EN