Rolling tachyons in string cosmology
Oct, 2002Citations per year
Abstract:
We study the role of rolling tachyons in the cosmological model with dilatonic gravity. In the string frame, flat space solutions of both initial-stage and late-time are obtained in closed form. In the Einstein frame, we show that every expanding solution is decelerating.Note:
- More references added. A version to be published in Phys.Lett.B
- Rolling tachyon
- String cosmology
- Dilaton
- astrophysics: string
- tachyon
- gravitation: dilaton
- effective action
- membrane model: D-brane
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