298 citations · 698 across the 11 of their papers we have counts for
11 papers
On Cosmic No-hair in Bimetric Gravity and the Higuchi Bound
Yuki Sakakihara, Jiro Soda, Tomohiro Takahashi
We study the cosmic no-hair in the presence of spin-2 matter, i.e. in bimetric gravity. We obtain stable de Sitter solutions with the cosmological constant in the physical sector a…
Instability of Charged Lovelock Black Holes: Vector Perturbations and Scalar Perturbations
Tomohiro Takahashi
We examine the stability of charged Lovelock black hole solutions under vector type and scalar type perturbations. We find the suitable master variables for the stability analysis;…
Pathologies in Lovelock AdS Black Branes and AdS/CFT
Tomohiro Takahashi, Jiro Soda
We study the pathologies in AdS black branes in Lovelock theory. More precisely, we examine the conditions that AdS black branes have the naked singularity, the ghost instability a…
Fatal Effects of Charges on Stability of Black Holes in Lovelock Theory
Tomohiro Takahashi
We study the stability of static spherically symmetric charged black holes under tensor type perturbations in Lovelock theory which is a natural higher dimensional generalization o…
Catastrophic Instability of Small Lovelock Black Holes
Tomohiro Takahashi, Jiro Soda
We study the stability of static black holes in Lovelock theory which is a natural higher dimensional generalization of Einstein theory. We show that Lovelock black holes are stabl…
Master Equations for Gravitational Perturbations of Static Lovelock Black Holes in Higher Dimensions
Tomohiro Takahashi, Jiro Soda
In this paper, we derive the master equations for gravitational perturbations of vector and scalar type for static vacuum Lovelock black holes. Together with our previous work on t…