3 papers
gr-qc2025
Ergodic Hysteresis of the Kerr black hole spectrum
João Paulo Cavalcante, Maurício Richartz, Bruno Carneiro da Cunha
We uncover a cascade of exceptional points (EPs) in the quasinormal mode spectrum of massive scalar perturbations of Kerr black holes, revealing an intricate non-Hermitian structur…
gr-qc2024
Massive scalar perturbations in Kerr Black Holes: near extremal analysis
João Paulo Cavalcante, Maurício Richartz, Bruno Carneiro da Cunha
We study quasinormal modes of massive scalar perturbations in Kerr black holes using the isomonodromic method. For arbitrary scalar masses and black hole spins , we nume…
gr-qc2024
Exceptional point and hysteresis in perturbations of Kerr black holes
João Paulo Cavalcante, Maurício Richartz, Bruno Carneiro da Cunha
We employ the isomonodromic method to study linear scalar massive perturbations of Kerr black holes for generic scalar masses and generic black hole spins . We find that…