Instability of the Time Dependent Horava-Witten Model

Details Instability of the Time Dependent Horava-Witten Model Instability of the Time Dependent Horava-Witten Model

2007-12-13

arxiv.org/abs/0712.2155v2

Phys.Rev.D77:104030,2008

Physics

High Energy Physics

High Energy Physics - Theory

12 pages, 4 figures. References added. Some comments clarified. Accepted in Phys. Rev. D

Scientific paper

10.1103/PhysRevD.77.104030

We consider scalar perturbations in the time-dependent Ho\u{r}ava-Witten Model in order to probe its stability. We show that during the non-singular epoque the model evolves without instabilities until it encounters the curvature singularity where a big crunch is supposed to occur. We compute the frequencies of the scalar field oscillation during the stable period and show how the oscillations can be used to prove the presence of such a singularity.

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