论文标题
通过21 cm信号观察原始相关性无效
Observing nulling of primordial correlations via the 21 cm signal
论文作者
论文摘要
在黑暗时期，由中性氢（HI）发出的21厘米线带有原始原始相关性的烙印。在一个由单个规范标量场驱动的通货膨胀模型中，我们表明，在特定的wavenumber $ k_ \ textrm {dip} $的所有原始相关性中，超流卷的阶段可能导致所有原始相关性。我们考虑相关中的无效发生的情况，$ 1 \ lyssim k_ \ textrm {dip} \ sillsim 10 \，\ mathrm {mpc}^{ - 1} $，并检查了由于bi Misser the Nulls serverra and profe and the lude and profe and profence and profe and profe and of pore and of power and of power and power and pore and power and pore and of power and port of power and power and port of power and of power and of word''的前景。
The 21cm line emitted by neutral hydrogen (HI) during the Dark Ages carries imprints of pristine primordial correlations. In models of inflation driven by a single, canonical scalar field, we show that a phase of ultra-slow-roll can lead to a null in all the primordial correlations at a specific wavenumber $k_\textrm{dip}$. We consider scenarios wherein the null in the correlations occurs over wavenumbers $1 \lesssim k_\textrm{dip} \lesssim 10\,\mathrm{Mpc}^{-1}$, and examine the prospects of detecting such a damping in the HI signal due to the nulls at the level of power and bi-spectra in future observational missions.
