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arXiv · 1403.5043

Higgs inflation still alive

Yuta Hamada·Hikaru Kawai·Kin-ya Oda·Seong Chan Park
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Abstract

The observed value of the Higgs mass indicates that the Higgs potential becomes small and flat at the scale around $10^{17}$GeV. Having this fact in mind, we reconsider the Higgs inflation scenario proposed by Bezrukov and Shaposhnikov. It turns out that the non-minimal coupling $ξ$ of the Higgs-squared to the Ricci scalar can be smaller than ten. For example, $ξ=7$ corresponds to the tensor-to-scalar ratio $r\simeq0.2$, which is consistent with the recent observation by BICEP2.

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Yuta Hamada, Hikaru Kawai, Kin-ya Oda, Seong Chan Park. 2014-05-02. Higgs inflation still alive. https://doi.org/10.1103/physrevlett.112.241301

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