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
Non-BPS floating branes and bubbling geometries
Sign Up to like & getrecommendations! Published in 2022 at "Journal of High Energy Physics"
DOI: 10.1007/jhep02(2022)162
Abstract: Abstract We derive a non-BPS linear ansatz using the charged Weyl formalism in string and M-theory backgrounds. Generic solutions are static and axially-symmetric with an arbitrary number of non-BPS sources corresponding to various brane, momentum… read more here.
Keywords: non extremal; bps; physics; bubbling geometries ... See more keywords
Superradiant instability of charged extremal black holes in Einstein-Born-Infeld gravity
Sign Up to like & getrecommendations! Published in 2024 at "Journal of High Energy Physics"
DOI: 10.1007/jhep07(2024)003
Abstract: We study charged scalar perturbations of charged extremal black holes in Einstein-Born-Infeld theory. Our numerical results indicate that these black holes all suffer from superradiant instability by the unstable quasi-bound states, regardless how small the… read more here.
Keywords: black holes; gravity; einstein born; extremal black ... 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
Aretakis constants and instability in general spherically symmetric extremal black hole spacetimes: Higher multipole modes, late-time tails, and geometrical meanings
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.105.064062
Abstract: We study late-time behaviors of massive scalar fields in general static and spherically symmetric extremal black hole spacetimes in arbitrary dimensions. We show the existence of conserved quantities on the extremal black hole horizons for… read more here.
Keywords: extremal black; aretakis constants; black hole; late time ... See more keywords
Note on the action with the Schwarzian at the stretched horizon
Sign Up to like & getrecommendations! Published in 2022 at "Physical Review D"
DOI: 10.1103/physrevd.107.104064
Abstract: In this paper, we discuss the quantization of an interesting model of Carlip which appeared recently. It shows a way to associate boundary degrees of freedom to the stretched horizon of a stationary non-extremal black… read more here.
Keywords: extremal black; stretched horizon; thermodynamics; degrees freedom ... See more keywords
Extremal black hole weather
Sign Up to like & getrecommendations! Published in 2025 at "Physical Review D"
DOI: 10.1103/physrevd.111.124038
Abstract: We consider weakly nonlinear gravitational perturbations of a near-extremal Kerr black hole governed by the second-order vacuum Einstein equation. Using the GHZ [for , ], these are parametrized by a Hertz potential. We make an… read more here.
Keywords: time; black hole; hole; hole weather ... 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
Horizon Hair of Extremal Black Holes and Measurements at Null Infinity.
Sign Up to like & getrecommendations! Published in 2018 at "Physical review letters"
DOI: 10.1103/physrevlett.121.131102
Abstract: It is shown that the conserved charges on the event horizon and the Cauchy horizon associated with scalar perturbations on extremal black holes are externally measurable from null infinity. This suggests that these charges have… read more here.
Keywords: horizon hair; extremal black; black holes; null infinity ... See more keywords