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Global structure of exact cosmological solutions in the brane world
Shinji Mukohyama, Tetsuya Shiromizu, Kei-ichi Maeda
We find the explicit coordinate transformation which links two exact cosmological solutions of the brane world which have been recently discovered. This means that both solutions a…
Signature of chaos in gravitational waves from a spinning particle
Shingo Suzuki, Kei-ichi Maeda
A spinning test particle around a Schwarzschild black hole shows a chaotic behavior, if its spin is larger than a critical value. We discuss whether or not some peculiar signature…
Generality of Singularity Avoidance in Superstring Theory: Anisotropic Case
Hiroki Yajima, Kei-ichi Maeda, Hidetoshi Ohkubo
In one-loop string effective action, we study a generality of non-singular cosmological solutions found in the isotropic and homogeneous case. We discuss Bianchi I and IX type spac…
Preheating of the nonminimally coupled inflaton field
S. Tsujikawa, K. Maeda, T. Torii
We investigate preheating of an inflaton field coupled nonminimally to a spacetime curvature. In the case of a self-coupling inflaton potential , the dynamics of p…
The Einstein Equations on the 3-Brane World
Tetsuya Shiromizu, Kei-ichi Maeda, Misao Sasaki
We carefully investigate the gravitational equations of the brane world, in which all the matter forces except gravity are confined on the 3-brane in a 5-dimensional spacetime with…
The fate of Reissner-Nortström black hole in the Einstein-Yang-Mills-Higgs system
Takashi Tamaki, Kei-ichi Maeda
We study about an evaporating process of black holes in SO(3) Einstein-Yang-Mills-Higgs system. We consider a massless scalar field which couple neither with the Yang-Mills field n…