论文标题
$ n_s = 1 $在哈勃张力和原始引力波中迈向混合通货膨胀
Towards hybrid inflation with $n_s=1$ in light of Hubble tension and primordial gravitational waves
论文作者
论文摘要
最近，已经发现，对哈勃张力的完全分辨率可能指出了原始标量扰动的标尺不变的Harrison-Zeldovich Spectrum，即$ n_s = 1 $ for $ h_0 \ sim 73 $ km 73 $ km/s/s/mpc。我们表明，对于众所周知的慢速模型，如果通货膨胀以瀑布的不稳定性而结束，而Aftraton仍处于深层慢速区域，则可以将$ N_S $提升至$ n_s = 1 $。我们的结果令人惊讶的是，通过预先结构的早期黑暗能源，Chaotic $ ϕ^2 $通货膨胀，由Planck+Bicep/Keck在标准$λ$ CDM中排除在外，现在可以恢复，现在在即将到来的COSMIC Microwave背景B模式实验的可测试区域内。
Recently, it has been found that complete resolution of the Hubble tension might point to a scale-invariant Harrison-Zeldovich spectrum of primordial scalar perturbation, i.e. $n_s=1$ for $H_0\sim 73$km/s/Mpc. We show that for well-known slow-roll models, if inflation ends by a waterfall instability with respect to another field in the field space while inflaton is still at a deep slow-roll region, $n_s$ can be lifted to $n_s= 1$. A surprise of our result is that with pre-recombination early dark energy, chaotic $ϕ^2$ inflation, ruled out by Planck+BICEP/Keck in standard $Λ$CDM, can be revived, which is now well within testable region of upcoming cosmic microwave background B-mode experiments.
