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12 papers · 2 filters
Scalar perturbations of higher dimensional rotating and ultra-spinning black holes
Vitor Cardoso, George Siopsis, Shijun Yoshida
We investigate the stability of higher dimensional rotating black holes against scalar perturbations. In particular, we make a thorough numerical and analytical analysis of six-dim…
Inflation from Superstring/M Theory Compactification with Higher Order Corrections I
Kei-ichi Maeda, Nobuyoshi Ohta
We study time-dependent solutions in M and superstring theories with higher order corrections. We first present general field equations for theories of Lovelock type with stringy c…
Positivity Bounds for the Y-ADM Mass Density
David Kastor, Tetsuya Shiromizu, Shinya Tomizawa +1
Killing-Yano tensors are natural generalizations of Killing vectors to arbitrary rank anti-symmetric tensor fields. It was recently shown that Killing-Yano tensors lead to conserve…
Asymmetric D-braneworld
Keitaro Takahashi, Tetsuya Shiromizu
In recent papers on Randall-Sundrum D-braneworld model with Z_2 symmetry, it was shown that the effective gravity does not work as usual, that is, the gravity does not couple to th…
Creation of a brane world with Gauss-Bonnet term
Koh-suke Aoyanagi, Kei-ichi Maeda
We study a creation of a brane world using an instanton solution. We analyze a brane model with a Gauss-Bonnet term in a bulk spacetime. The curvature of 3-brane is assumed to be c…
Gravity in Randall-Sundrum two D-brane model
Tetsuya Shiromizu, Keitaro Takahashi, Yoshiaki Himemoto +1
We analyse Randall-Sundrum two D-brane model by linear perturbation and then consider the linearised gravity on the D-brane. The qualitative contribution from the Kaluza-Klein mode…