1999/01/23 by Shinsuke Kawai, Masa-aki Sakagami, Jiro Soda · 1 citation
Physics and Astronomy · #gr-qc
published as Proceedings of the Seventh Workshop on General Relativity and Gravitation (Y. Eriguchi et.al., ed.) pp.249 · Talk at YITP, Kyoto, in the Seventh Workshop on General Relativity and Gravitation (Oct., 1997)
arxiv created 1999/01/23 · arxiv updated 2009/11/30
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 realizes non-singular transition from de Sitter universe to Friedmann-like universe, via super inflation phase. We are interested in whether the non-singular nature of the solution would be stable or not in more general inhomogeneous case. Perturbative analysis is made for scalar, vector, and tensor linear perturbations, and instability is found for tensor-type perturbation.