2014/09/30 by Maurício Richartz, Davi Giugno · 48 citations
Physics and Astronomy · #Black Holes and Theoretical Physics #Black hole (networking) #Charge (physics) #Charged black hole #Cosmology and Gravitation Theories #Electromagnetic field #Extremal black hole #Geometry #Limit (mathematics) #Mathematical analysis #Physics #Pulsars and Gravitational Waves Research #Quantum electrodynamics #Quantum mechanics #Quasinormal mode #Scalar (mathematics) #Scalar field #gr-qc
paper · pdf · doi:10.1103/physrevd.90.124011
published in Physical review. D. Particles, fields, gravitation, and cosmology/Physical review. D. Particles and fields 90(12) (American Physical Society) · v3: matches published version. v2: 9 pages, 10 figures. References added. New appendix
arxiv created 2014/12/03 · openalex publication_date 2014/12/03 · arxiv updated 2014/12/04 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
The quasinormal spectrum of a charged scalar field around a nonextremal Reissner-Nordstr"om black hole, especially in the limit of large electromagnetic interaction, has been comprehensively studied only very recently. In this paper, we extend the analysis to Dirac fields using the continued fraction method and compare the results with the scalar case. In particular, we study the behavior of the fundamental quasinormal mode as a function of the black hole's charge and of the electromagnetic interaction parameter. We derive an analytical formula for the quasinormal frequencies in the limit of large electromagnetic interaction. As the extremal limit of black hole charge is approached, we show that, unlike the case of neutral fields, the imaginary part of the quasinormal frequencies approaches zero for charged fields.