Natural inflation after Planck 2018
Natural inflation after Planck 2018
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DOI：
10.1088/1475-7516/2022/01/022
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发表时间：
2021-06
影响因子：
6.4
通讯作者：
Nina K. Stein;W. Kinney
中科院分区：
文献类型：
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作者：
Nina K. Stein;W. Kinney
我们计算了相对于普朗克2018 + BICEP/Keck（BK 15）偏振+ BAO对r和n S的当前观测约束的自然暴胀的高精度约束，包括宇宙的后暴胀历史。我们发现，对于传统的后通货膨胀动力学，余弦势的自然通货膨胀是不利的，在大于95%的信心，由目前的数据。如果我们假设持续的再加热的特征是w ≥ 1/3，自然暴胀可以与当前的观测约束相一致。然而，使未经修改的自然通货膨胀到68%的置信区间需要T重的值低于规模的电弱对称性破缺。在哈勃常数H 0上增加一个先验的SHOES只会使拟合变得更好。
We calculate high-precision constraints on Natural Inflation relative to current observational constraints from Planck 2018 + BICEP/Keck(BK15) Polarization + BAO on r and n S, including post-inflationary history of the universe. We find that, for conventional post-inflationary dynamics, Natural Inflation with a cosine potential is disfavored at greater than 95% confidence out by current data. If we assume protracted reheating characterized by w̅>1/3, Natural Inflation can be brought into agreement with current observational constraints. However, bringing unmodified Natural Inflation into the 68% confidence region requires values of T re below the scale of electroweak symmetry breaking. The addition of a SHOES prior on the Hubble Constant H 0 only worsens the fit.