48 citations · 190 across the 19 of their papers we have counts for
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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…
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…
Coupling the Sorkin-Johnston State to Gravity
Nicolás Avilán, Andrés F. Reyes-Lega, Bruno Carneiro da Cunha
We consider the dynamics of the Sorkin-Johnston (SJ) state for a massless scalar field in two dimensions. We conduct a study of the renormalized stress-tensor by a subtraction proc…
Spinors and the Weyl Tensor Classification in Six Dimensions
Carlos Batista, Bruno Carneiro da Cunha
A spinorial approach to 6-dimensional differential geometry is constructed and used to analyze tensor fields of low rank, with special attention to the Weyl tensor. We perform a st…