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7 papers · 2 filters
Low energy effective action on a self-gravitating D-brane
Sumitada Onda, Tetsuya Shiromizu, Kazuya Koyama +1
Recently the study of braneworld on the self-gravitating D-brane has been initiated and derived the gravitational equation on the brane by holographic and geometrical projection me…
D-braneworld cosmology II: Higher order corrections
Tomoko Uesugi, Tetsuya Shiromizu, Takashi Torii +1
We investigate braneworld cosmology based on the D-brane initiated in our previous paper. The brane is described by a Born-Infeld action and the gauge field is contained. The highe…
Covariant Gravitational Equations on Brane World with Gauss-Bonnet term
Kei-ichi Maeda, Takashi Torii
We present the covariant gravitational equations to describe a four-dimensional brane world in the case with the Gauss-Bonnet term in a bulk spacetime, assuming that gravity is con…
Cosmological constant and gravitational theory on D-brane
Tetsuya Shiromizu, Kazuya Koyama, Takashi Torii
In a toy model we derive the gravitational equation on a self-gravitating curved D-brane. The effective theory on the brane is drastically changed from the ordinal Einstein equatio…
Can we live on a D-brane? -- Effective theory on a self-gravitating D-brane --
Tetsuya Shiromizu, Kazuya Koyama, Sumitada Onda +1
We consider a D-brane coupled with gravity in type IIB supergravity on S^5 and derive the effective theory on the D-brane in two different ways, that is, holographic and geometrica…
Steep Inflation followed by Born-Infeld Reheating
M. Sami, N. Dadhich, Tetsuya Shiromizu
We discuss a model in which high energy brane corrections allow a single scalar field to describe inflation at early epochs and quintessence at late times. The reheating mechanism…