34 citations · 116 across the 9 of their papers we have counts for
9 papers
Exceptional lines in the Kerr-Newman black hole spectrum
João Paulo Cavalcante, Maurício Richartz
We investigate massive scalar perturbations of Kerr-Newman black holes, focusing on the quasinormal mode spectrum in the near-extremal regime. We identify a sequ…
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…
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…
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…
Isomonodromy Method and Black Holes Quasinormal Modes: numerical results and extremal limit analysis
João Paulo Cavalcante
In this thesis, we present and apply the isomonodromy method (or isomonodromic method) to the study of quasinormal modes (QNMs), more precisely, we consider the analysis of modes t…
Expansions for semiclassical conformal blocks
Bruno Carneiro da Cunha, João Paulo Cavalcante
We propose a relation the expansions of regular and irregular semiclassical conformal blocks at different branch points making use of the connection between the accessory parameter…
Scalar/Dirac perturbations of the Reissner-Nordström black hole and Painlevé transcendents
João Paulo Cavalcante, Bruno Carneiro da Cunha
We investigate spin- and spin- perturbations for non-extremal and extremal Reissner-Nordström backgrounds using the isomonodromic method. We calculate the fundament…
Teukolsky master equation and Painlevé transcendents: numerics and extremal limit
Bruno Carneiro da Cunha, João Paulo Cavalcante
We conduct an analysis of the quasi-normal modes for generic spin perturbations of the Kerr black hole using the isomonodromic method. The strategy consists of solving the Riemann-…
Confluent conformal blocks and the Teukolsky master equation
Bruno Carneiro da Cunha, João Paulo Cavalcante
Quasinormal modes of usual, four dimensional, Kerr black holes are described by certain solutions of a confluent Heun differential equation. In this work, we express these solution…