3 papers
gr-qc1999
Structure Formation in Non-singular Higher Curvature Cosmology
Shinsuke Kawai, Jiro Soda
We propose novel structure formation scenarios based on a non-singular higher curvature cosmological model. The model is motivated by the coupling of a scalar field appearing…
gr-qc1999
Perturbative analysis of non-singular cosmological model
Shinsuke Kawai, Masa-aki Sakagami, Jiro Soda
A stability analysis is made for a non-singular pre-big-bang like cosmological model based on 1-loop corrected string effective action. Its homogeneous and isotropic solution reali…
gr-qc1998
Novel Instability in Superstring Cosmology
Jiro Soda, Masa-aki Sakagami, Shinsuke Kawai
As a most promising candidate for quantum theory of the gravity, the superstring theory has attracted many researchers including cosmologists. It is expected that the cosmological…