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10 papers · 2 filters
Black Hole in the Expanding Universe from Intersecting Branes
Kei-ichi Maeda, Masato Nozawa
We study physical properties and global structures of a time-dependent, spherically symmetric solution obtained via the dimensional reduction of intersecting M-branes. We find that…
Stability of branes trapped by d-dimensional black holes
Kenta Hioki, Umpei Miyamoto, Masato Nozawa
The system of extended objects interplaying with a black hole describes or mimics various gravitational phenomena. In this brief paper, we report the results of stability analysis…
Black Hole Solutions in String Theory with Gauss-Bonnet Curvature Correction
Kei-ichi Maeda, Nobuyoshi Ohta, Yukinori Sasagawa
We present the black hole solutions and analyse their properties in the superstring effective field theory with the Gauss-Bonnet curvature correction terms. We find qualitative dif…
Magnetic flux, Wilson line and orbifold
Hiroyuki Abe, Kang-Sin Choi, Tatsuo Kobayashi +1
We study torus/orbifold models with magnetic flux and Wilson line background. The number of zero-modes and their profiles depend on those backgrounds. That has interesting implicat…
Dynamics of intersecting brane systems -- Classification and their applications --
Kei-ichi Maeda, Nobuyoshi Ohta, Kunihito Uzawa
We present dynamical intersecting brane solutions in higher-dimensional gravitational theory coupled to dilaton and several forms. Assuming the forms of metric, form fields, and di…
Influence on observation from IR divergence during inflation -- Multi field inflation --
Yuko Urakawa, Takahiro Tanaka
We propose one way to regularize the fluctuations generated during inflation, whose infrared (IR) corrections diverge logarithmically. In the case of a single field inflation model…