Non-minimally assisted chaotic inflation
Non-minimally assisted chaotic inflation
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DOI：
10.1088/1475-7516/2022/05/045
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发表时间：
2022-03
影响因子：
6.4
通讯作者：
Sang Chul Hyun;Jinsu Kim;S. Park;Tomo Takahashi
中科院分区：
文献类型：
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作者：
Sang Chul Hyun;Jinsu Kim;S. Park;Tomo Takahashi
传统观点认为，最近的普朗克-BICEP/凯克结果排除了具有幂律势的混沌暴胀模型。然而，我们发现，该模型可以通过一个非最小耦合标量场的协助，仍然提供了一个成功的通货膨胀。考虑V <$φn型幂律混沌暴胀模型，其中n = {2，4/3，1，2/3，1/3}，我们证明了n = 1/3（n = {2/3，1/3}）可以借助于辅助场与引力的二次（四次）非最小耦合而复活.
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 ∼ φn 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.