科研之友
微信
新浪微博
Facebook
分享链接
摘要
We show that the non-minimal coupling of tachyon field to the scalar curvature, as proposed by Piao et at, with the chosen coupling parameter does not produce the effective potential where the tachyon field can roll down from T = 0 to large T along the slope of the potential. We find a correct choice of the parameters which ensures this requirement and support slow-roll inflation. However, we find that the cosmological parameter found from the analysis of the theory are not in the range obtained from observations. We then invoke warped compactification and varying dilaton field over the compact manifold, as proposed by Raeymaekers, to show that in such a setup the observed parameter space can be ensured.
- 出版日期2005-2
