期刊
PHYSICAL REVIEW D
卷 90, 期 12, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevD.90.123539
关键词
-
资金
- Madrid Regional Government (CAM) under the program HEPHACOS [S2009/ESP-1473-02]
- Spanish MINECO [FPA2012-39684-C03-02, CSD2007-00060]
- Centro de Excelencia Severo Ochoa Programme [SEV-2012-0249]
- European Union Marie Curie Initial Training Network UNILHC [PITN-GA-2009-237920]
We provide strong evidence for universality of the inflationary field range: given an accurate measurement of (n(s), r), one can infer Delta phi in a model-independent way in the sub-Planckian regime for a range of universality classes of inflationary models. Both the tensor-to-scalar ratio as well as the spectral tilt are essential for the field range. Given the Planck constraints on ns, the Lyth bound is strengthened by two orders of magnitude: whereas the original bound gives a sub-Planckian field range for r less than or similar to 2 x 10(-3), we find that n(s) = 0.96 brings this down to r less than or similar to 2 x 10(-5).
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据