Dynamics of intersecting brane systems -- Classification and their applications -- (2009)
Maeda, Kei-ichi, Ohta, Nobuyoshi, Uzawa, Kunihito
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 dilaton field, we...
Dynamical solution of supergravity (2008)
Binetruy, Pierre, Sasaki, Misao, Uzawa, Kunihito
We present a class of dynamical solutions for an intersecting D4-D8 brane system in ten-dimensional type IIA supergravity. The dynamical solutions reduces to a static warped AdS_6 x S^4 geometry in a...
Dynamical D4-D8 branes in supergravity (2007)
Binetruy, Pierre, Sasaki, Misao, Uzawa, Kunihito
We present a class of dynamical solutions for an intersecting D4-D8 brane system in ten-dimensional type IIA supergravity. The dynamical solutions reduces to a static warped AdS_6 x S^4 geometry in a...
Moduli Instability in Warped Compactification (2006)
Kodama, Hideo, Uzawa, Kunihito
We derive four-dimensional effective theories for warped compactification of the ten-dimensional IIB supergravity. We show that these effective theories allow a much wider class of solutions than the...
Comments on the four-dimensional effective theory for warped compactification (2005)
Kodama, Hideo, Uzawa, Kunihito
We derive four-dimensional effective theories for warped compactification of the ten-dimensional IIB supergravity and the eleven-dimensional Horava-Witten model. We show that these effective theories...
Discrete Light-Cone Quantization in PP-Wave Background (2005)
Uzawa, Kunihito, Yoshida, Kentaroh
We discuss the discrete light-cone quantization (DLCQ) of a scalar field theory on the maximally supersymmetric pp-wave background in ten dimensions. It has been shown that the DLCQ can be carried...
Moduli Instability in Warped Compactifications of the Type IIB Supergravity (2005)
Kodama, Hideo, Uzawa, Kunihito
We show that the conifold and deformed-conifold warped compactifications of the ten-dimensional type IIB supergravity, including the Klebanov-Strassler solution, are dynamically unstable in the...
Effective Potential in PP-Wave Geometry (2004)
Uzawa, Kunihito, Yoshida, Kentaroh
We calculate effective potentials in scalar field theories on the maximally supersymmetric pp-wave background in ten dimensions. For this purpose we have to work in the light-cone formulation, and...
Dilaton Stabilization in (A)dS Spacetime with Compactified Dimensions (2003)
We investigate dilaton stabilization in a higher-dimensional theory. The background geometry is based on an eleven-dimensional Kaluza-Klein/supergravity model, which is assumed to be a product of...
Dilaton Dynamics in (A)dS_5 x S^5 (2003)
Uzawa, Kunihito, Maeda, Kei-ichi
We investigate a stabilization of extra dimensions in a ten-dimensional Kaluza-Klein theory and IIB supergravity. We assume (A)dS_5 x S^5 compactifcation, and calculate quantum effects to find an...
Excitation of Kaluza-Klein modes of U(1) field by parametric resonance (2000)
Morisawa, Yoshiyuki, Uzawa, Kunihito, Mukohyama, Shinji
In this paper, based on the theory of parametric resonance, we propose a cosmological criterion on ways of compactification: we rule out such a model of compactification that there exists a...
Excitation of Kaluza-Klein gravitational mode (1999)
Uzawa, Kunihito, Morisawa, Yoshiyuki, Mukohyama, Shinji
We investigate excitation of Kaluza-Klein modes due to the parametric resonance caused by oscillation of radius of compactification. We consider a gravitational perturbation around a D-dimensional...