Sub-Planckian inflation & large tensor to scalar ratio with $r\geq 0.1$

preprint2014arXivOpen access

We categorically point out why the analysis of arXiv:1404.1821 [hep-ph] is incorrect. Here we explicitly show why the sub-Planckian field excursion of the inflaton field can yield large observable tensor-to-scalar ratio, which satisfies both Planck and BICEP constraints.

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Sub-Planckian inflation & large tensor to scalar ratio with $r\geq 0.1$

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Sub-Planckian inflation & large tensor to scalar ratio with r≥0.1r\geq 0.1r≥0.1

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Sub-Planckian inflation & large tensor to scalar ratio with $r\geq 0.1$