Equivalence of JT gravity and near-extremal black hole dynamics in higher derivative theory
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep01(2022)124
Abstract: Two derivative Jackiw-Teitelboim (JT) gravity theory captures the near-horizon dynamics of higher dimensional near-extremal black holes, which is governed by a Schwarzian action at the boundary in the near-horizon region. The partition function corresponding to… read more here.
Keywords: dynamics higher; black hole; near extremal; higher derivative ... See more keywords
Conformal boundaries near extremal black holes
Sign Up to like & getrecommendations! Published in 2025 at "Classical and Quantum Gravity"
DOI: 10.1088/1361-6382/ae0408
Abstract: We examine four dimensional, near-extremal black hole solutions in the presence of a finite boundary obeying conformal boundary conditions, where the conformal class of the induced metric and the trace of the extrinsic curvature are… read more here.
Keywords: near extremal; boundaries near; gravity; conformal boundaries ... See more keywords
Observability of spherical photon orbits in near-extremal Kerr black holes
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.100.044058
Abstract: We investigate the spherical photon orbits in near-extremal Kerr spacetimes. We show that the spherical photon orbits with impact parameters in a finite range converge on the event horizon. Furthermore, we demonstrate that the Weyl… read more here.
Keywords: photon orbits; spherical photon; near extremal; orbits near ... See more keywords
Transition from inspiral to plunge: A complete near-extremal trajectory and associated waveform
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review D"
DOI: 10.1103/physrevd.101.064026
Abstract: We extend the Ori and Thorne (OT) procedure to compute the transition from an adiabatic inspiral into a geodesic plunge for any spin. Our analysis revisits the validity of the approximations made in OT. In… read more here.
Keywords: inspiral plunge; plunge complete; near extremal; transition inspiral ... See more keywords
Massive scalar perturbations in Kerr black holes: Near extremal analysis
Sign Up to like & getrecommendations! Published in 2024 at "Physical Review D"
DOI: 10.1103/physrevd.110.124064
Abstract: We study quasinormal modes of massive scalar perturbations in Kerr black holes using the isomonodromic method. For arbitrary scalar masses $M \mu$ and black hole spins $a/M$, we numerically determine the quasinormal frequencies for various… read more here.
Keywords: perturbations kerr; massive scalar; scalar perturbations; kerr black ... See more keywords
Near-extremal black holes in Weyl gravity: Quasinormal modes and geodesic instability
Sign Up to like & getrecommendations! Published in 2019 at "Physical Review D"
DOI: 10.1103/physrevd.99.124025
Abstract: Stability criteria of nearly extreme black holes in the perturbations level is one of the interesting issues in gravitational systems. Considering the nearly extreme conformal--de Sitter black holes, in this paper, we obtain an exact… read more here.
Keywords: black holes; near extremal; weyl gravity; holes weyl ... See more keywords