55 citations · 182 across the 14 of their papers we have counts for
12 papers · 1 filter
On initial conditions and global existence for accelerating cosmologies from string theory
Makoto Narita
We construct a solution satisfying initial conditions for accelerating cosmologies from string/M-theory. Gowdy symmetric spacetimes with a positive potential are considered. Also,…
Global properties of higher-dimensional cosmological spacetimes
Makoto Narita
We study global existence problems and asymptotic behavior of higher-dimensional inhomogeneous spacetimes with a compact Cauchy surface in the Einstein-Maxwell-dilaton (EMD) system…
Global existence problem in -Gowdy symmetric IIB superstring cosmology
Makoto Narita
We show global existence theorems for Gowdy symmetric spacetimes with type IIB stringy matter. The areal and constant mean curvature time coordinates are used. Before coming to tha…
On the existence of global solutions for -Gowdy spacetimes with stringy matter
Makoto Narita
We show a global existence theorem for Einstein-matter equations of -Gowdy symmetric spacetimes with stringy matter. The areal time coordinate is used. It is shown that this…
Asymptotic singular behavior of Gowdy spacetimes in string theory
Makoto Narita, Takashi Torii, Kengo Maeda
We study Gowdy spacetimes in the Einstein-Maxwell-dilaton-axion system and show by the Fuchsian algorithm that they have in general asymptotically velocity-term dominated s…
Violation of the cosmic no hair conjecture in Einstein-Maxwell-dilaton system
Kengo Maeda, Takashi Torii, Makoto Narita
The cosmic no hair conjecture is tested in the spherically symmetric Einstein-Maxwell-dilaton~(EMD) system with a positive cosmological constant . Firstly, we analytically show…