Take up the challenge for a single field inflation after BICEP2
arXiv:1405.0656 · doi:10.1142/S0217732314501971
Abstract
The measurement of the tensor-to-scalar ratio shows a very powerful constraint to theoretical inflation models through the detection of B-mode. In this paper, we propose a single inflation model with infinity pows series potential called the Infinity Power Series (IPS) inflation model, which is well consistent with latest observations from \textit{Planck} and BICEP2. Furthermore, it is found that in the IPS model, the absolute value the running of the spectral index increases while the tensor-to-scalar ratio becomes large, namely both large and are realized in the IPS model. In the meanwhile, the number of e-folds is also big enough to solve the problems in Big Bang cosmology.
10 pages, 5 figures