Instability of 1-loop superstring cosmology

Details Instability of 1-loop superstring cosmology Instability of 1-loop superstring cosmology

1998-02-16

arxiv.org/abs/gr-qc/9802033v2

Phys.Lett. B437 (1998) 284-290

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

10 pages, 6 figures, revtex

Scientific paper

10.1016/S0370-2693(98)00925-3

A stability analysis is made in the context of the previously discovered non-singular cosmological solution from 1-loop corrected superstring effective action. We found that this solution has an instability in graviton mode, which is shown to have a close relation to the avoidance of initial singularity via energy condition. We also estimate the condition for the breakdown of the background solution due to the overdominance of the graviton.

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