论文标题
通过观察来限制宇宙通胀：2030年的前景
Constraining Cosmic Inflation with Observations: Prospects for 2030
论文作者
论文摘要
测试和限制宇宙通胀理论的能力将在未来十年内实质性发展。关键数据源包括宇宙微波背景（CMB）测量值以及从光学，近红外和21厘米强度SURVEYS中低降低物质分布的观察。与原始随机重力波背景（SGWB）一致的CMB B模式的正检测被广泛视为通货膨胀阶段的吸烟枪。尽管如此，无效结果并不排除通货膨胀。但是，在重要的一类通货膨胀方案中，低的SGWB振幅与原始密度扰动中更重要的运行$α_s$相比，比最简单的通货膨胀潜力所看到的。 With this motivation, we forecast the precision with which the spectral index $n_{\rm{s}}$ and $α_{\rm{s}}$ can be constrained by currently envisaged observations, including CMB (Simons Observatory, CMB-S4 and LiteBIRD), optical/near infra-red (DESI and SPHEREx), and 21cm intensity mapping （Tianlai和Chime）调查。我们确定数据集的最佳组合，以限制运行，并表明如果SGWB仍未被发现，它们可能会对整体通货膨胀参数空间产生其他信息的约束。
The ability to test and constrain theories of cosmic inflation will advance substantially over the next decade. Key data sources include cosmic microwave background (CMB) measurements and observations of the distribution of matter at low-redshift from optical, near-infrared, and 21cm intensity surveys. A positive detection of a CMB B-mode consistent with a primordial stochastic gravitational wave background (SGWB) is widely viewed as a smoking gun for an inflationary phase. Still, a null result does not exclude inflation. However, in a significant class of inflationary scenarios, a low SGWB amplitude is correlated with a more significant running, $α_s$, in the primordial density perturbations than is seen with the simplest inflationary potentials. With this motivation, we forecast the precision with which the spectral index $n_{\rm{s}}$ and $α_{\rm{s}}$ can be constrained by currently envisaged observations, including CMB (Simons Observatory, CMB-S4 and LiteBIRD), optical/near infra-red (DESI and SPHEREx), and 21cm intensity mapping (Tianlai and CHIME) surveys. We identify optimal combinations of datasets for constraining the running and show that they may yield additional and informative constraints on the overall inflationary parameter space if the SGWB remains undetected.
