arXiv:hep-th/0210101·v3·High Energy Physics — Theory
Rolling Tachyons in String Cosmology
Chanju Kim (Ewha W.U.)🇰🇷 · Hang Bae Kim (Lausanne U.)🇨🇭 · Yoonbai Kim (Sungkyunkwan U.)🇰🇷
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.
Comments: More references added. A version to be published in Phys.Lett.B