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16 papers · 2 filters
Stationary Spacetime from Intersecting M-branes
Makoto Tanabe, Kei-ichi Maeda
We study a stationary "black" brane in M/superstring theory. Assuming BPS-type relations between the first-order derivatives of metric functions, we present general stationary blac…
High-energy effective theory for a bulk brane
Claudia de Rham, Shunsuke Fujii, Tetsuya Shiromizu +1
We derive an effective theory describing the physics of a bulk brane in the context of the RS1 model. This theory goes beyond the usual low energy effective theory in that it descr…
Ambiguity of black hole entropy in loop quantum gravity
Takashi Tamaki, Hidefumi Nomura
We reexmine some proposals of black hole entropy in loop quantum gravity (LQG) and consider a new possible choice of the Immirzi parameter which has not been pointed out so far. We…
The first law of AdS black holes in higher curvature gravity
Jun-ichirou Koga
We consider the first law of black hole thermodynamics in an asymptotically anti-de Sitter spacetime in the class of gravitational theories whose gravitational Lagrangian is an arb…
Slow-roll corrections to inflaton fluctuations on a brane
Kazuya Koyama, Shuntaro Mizuno, David Wands
Quantum fluctuations of an inflaton field, slow-rolling during inflation are coupled to metric fluctuations. In conventional four dimensional cosmology one can calculate the effect…
On non-uniform smeared black branes
Hideaki Kudoh, Umpei Miyamoto
We investigate charged dilatonic black -branes smeared on a transverse circle. The system can be reduced to neutral vacuum black branes, and we perform static perturbations for…