Author:
Fei Qin,Ahmed Waqas,Wang Zhen-Lai
Abstract
We study the constant-roll tachyon inflation with large and small η. In previous studies, only the constant-roll tachyon inflation with small η is consistent with the observations. We find that the duality between the constant-roll tachyon inflation with large and small η may exist. The apparent duality suggests that the constant-roll tachyon inflationary model with large η may also be consistent with the observations. By fitting the spectral tilde ns and tensor to scalar ratio r, which is a measure of primordial gravitational waves with the observations, we get small and large η in this range −0.01629≤ηH≤−0.00079 and 3.00081≤ηH≤3.01621 at the 2σ C.L for N=60 efolds.
Funder
National Natural Science Foundation of China
Talent introduction fund of Hubei Polytechnic University
Subject
Physics and Astronomy (miscellaneous),General Mathematics,Chemistry (miscellaneous),Computer Science (miscellaneous)
Cited by
1 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献