Instability of regularized 4D charged Einstein-Gauss-Bonnet de-Sitter black holes *
Peng Liu, Chao Niu, Cheng-Yong Zhang
Abstract
Abstract We studied the instability of regularized 4D charged Einstein-Gauss-Bonnet de-Sitter black holes under charged scalar perturbations. The unstable modes satisfy the superradiant condition, but not all of the modes satisfying the superradiant condition are unstable. The instability occurs when the cosmological constant is small and the black hole charge is not too large. The Gauss-Bonnet coupling constant further destabilizes black holes when both the black hole charge and the cosmological constant are small and further stabilizes black holes when the black hole charge is large.
Topics & Concepts
PhysicsBlack hole (networking)de Sitter–Schwarzschild metricCosmological constantCharged black holeInstabilityGauss–Bonnet theoremDe Sitter universeExtremal black holeMathematical physicsCharge (physics)Quantum electrodynamicsCoupling constantClassical mechanicsQuantum mechanicsEinsteinEntropy (arrow of time)UniverseRouting (electronic design automation)Link-state routing protocolComputer scienceRouting protocolComputer networkBlack Holes and Theoretical PhysicsCosmology and Gravitation TheoriesAstrophysical Phenomena and Observations