10,249 research outputs found
Instability of small AdS black holes in sixth-order gravity
We investigate the stability analysis of AdS black holes in the higher
dimensional sixth-order gravity. This gravity is composed of Ricci cubic
gravity and Lee-Wick term. It indicates that the Ricci tensor perturbations
exhibit unstable modes for small AdS black holes in Ricci cubic gravity by
solving the Lichnerowicz-type linearized equation. We show that the correlated
stability conjecture holds for the AdS black hole by computing all
thermodynamic quantities in Ricci cubic gravity. Furthermore, we find a newly
non-AdS black hole in Ricci cubic gravity by making use of a static
eigenfunction of the Lichnerowicz operator.Comment: 27 pages, 4 figures. arXiv admin note: text overlap with
arXiv:1801.0462
Instability of Reissner-Nordstr\"{o}m black hole in Einstein-Maxwell-scalar theory
The scalarization of Reissner-Nordstr\"{o}m black holes was recently proposed
in the Einstein-Maxwell-scalar theory. Here, we show that the appearance of the
scalarized Reissner-Nordstr\"{o}m black hole is closely related to the
Gregory-Laflamme instability of the Reissner-Nordstr\"{o}m black hole without
scalar hair.Comment: 22 pages, 10 figures, version to appear in EPJ
Stability of scalarized charged black holes in the Einstein-Maxwell-Scalar theory
We analyze the stability of scalarized charged black holes in the
Einstein-Maxwell-Scalar (EMS) theory with quadratic coupling. These black holes
are labelled by the number of , where is called the
fundamental black hole and denote the -excited black holes.
We show that the black hole is stable against full perturbations, whereas
the excited black holes are unstable against the -mode scalar
perturbation. This is consistent with the EMS theory with exponential coupling,
but it contrasts to the scalarized black hole in the
Einstein-Gauss-Bonnet-Scalar theory with quadratic coupling. This implies that
the endpoint of unstable Reissner-Nordstr\"{o}m black holes with
is the black hole with the same . Furthermore, we study the scalarized
charged black holes in the EMS theory with scalar mass .Comment: 23 pages, 11 figures. arXiv admin note: text overlap with
arXiv:1812.0360
Reentrant phase transitions of higher-dimensional AdS black holes in dRGT massive gravity
We study the criticality and phase transition in the extended phase
space of anti-de Sitter (AdS) black holes in higher-dimensional de Rham,
Gabadadze and Tolley (dRGT) massive gravity, treating the cosmological constant
as pressure and the corresponding conjugate quantity is interpreted as
thermodynamic volume. Besides the usual small/large black hole phase
transitions, the interesting thermodynamic phenomena of reentrant phase
transitions (RPTs) are observed for black holes in all -dimensional
spacetime when the coupling coefficients of massive potential satisfy
some certain conditions.Comment: 14 pages, several references are added, v2: published in EPJ
Signature of the Van der Waals like small-large charged AdS black hole phase transition in quasinormal modes
We calculate the quasinormal modes of massless scalar perturbations around
small and large four-dimensional Reissner-Nordstrom-Anti de Sitter (RN-AdS)
black holes. We find a dramatic change in the slopes of quasinormal frequencies
in small and large black holes near the critical point where the Van der Waals
like thermodynamic phase transition happens. This further supports that the
quasinormal mode can be a dynamic probe of the thermodynamic phase transition.Comment: 20 pages,11 figures.The new version is accepted for publication in
JHE
- …