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12 papers · 2 filters
Matter without matter: novel Kaluza-Klein spacetime in Einstein-Gauss-Bonnet gravity
Hideki Maeda, Naresh Dadhich
We consider Einstein-Gauss-Bonnet gravity in -dimensional Kaluza-Klein spacetime ${\ma M}^{4} \times {\ma K}^{n-4}$, where ${\ma K}^{n-4}$ is the Einstein space with nega…
Fermions on Colliding Branes
Gary Gibbons, Kei-ichi Maeda, Yu-ichi Takamizu
We study the behaviour of five-dimensional fermions localized on branes, which we describe by domain walls, when two parallel branes collide in a five-dimensional Minkowski backgro…
Thermal Equilibrium of String Gas in Hagedorn Universe
Yu-ichi Takamizu, Hideaki Kudoh
The thermal equilibrium of string gas is necessary to activate the Brandenberger-Vafa mechanism, which makes our observed 4-dimensional universe enlarge. Nevertheless, the thermal…
Supersymmetric Rotating Black Hole in a Compactified Spacetime
Kei-ichi Maeda, Nobuyoshi Ohta, Makoto Tanabe
We construct a supersymmetric rotating black hole with asymptotically flat four-dimensional spacetime times a circle, by superposing an infinite number of BMPV black hole solutions…
Holographic entanglement entropy of de Sitter braneworld
Yukinori Iwashita, Tsutomu Kobayashi, Tetsuya Shiromizu +1
We study the holographic representation of the entanglement entropy, recently proposed by Ryu and Takayanagi, in a braneworld context. The holographic entanglement entropy of a de…
Kaluza-Klein black hole with negatively curved extra dimensions in string generated gravity models
Hideki Maeda, Naresh Dadhich
We obtain a new exact black-hole solution in Einstein-Gauss-Bonnet gravity with a cosmological constant which bears a specific relation to the Gauss-Bonnet coupling constant. The s…