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arXiv · 2203.09201

Non-minimally assisted chaotic inflation

Sang Chul Hyun·Jinsu Kim·Seong Chan Park·Tomo Takahashi
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Abstract

Conventional wisdom says that a chaotic inflation model with a power-law potential is ruled out by the recent Planck-BICEP/Keck results. We find, however, that the model can be assisted by a non-minimally coupled scalar field and still provides a successful inflation. Considering a power-law chaotic inflation model of the type $V\sim \varphi^n$ with $n=\{2, 4/3, 1, 2/3, 1/3\}$, we show that $n=1/3$ ($n=\{2/3, 1/3\}$) may be revived with the help of the quadratic (quartic) non-minimal coupling of the assistant field to gravity.

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Sang Chul Hyun, Jinsu Kim, Seong Chan Park, Tomo Takahashi. 2022-03-17. Non-minimally assisted chaotic inflation. https://doi.org/10.1088/1475-7516/2022/05/045

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