论文标题
通过光谱扭曲来限制通货膨胀势
Constraining the inflationary potential with spectral distortions
论文作者
论文摘要
测量宇宙微波背景（CMB）的光谱畸变（SD）将对先前未开发的原始功率谱的尺度提供新的约束，从而使我们能够通过$ k $ - 空格的几个数量级扩展探测的参数空间，这在原始黑色霍尔斯和Graverational和Graverational Practerational和其他范围内可能具有重要意义。在这里，我们讨论如何通过当前和未来的CMB SD和各向异性实验的组合来严格限制各种通货膨胀模型。特别是，我们研究了SD实验（例如FIRA，Pixie和Prism）与CMB各向异性探针（如Planck或CMB-S4加Litebird）的约束功率。在最新版本的Boltzmann求解器类（v3.0）的基础上，我们还始终在SD任务的可能的银河系和半河外的前景上边缘化。通过这种数值设置，我们能够实际预测通过添加各种SD任务提供的杠杆臂增加的改进将带来上述实验的多种组合。结果，在所有被考虑的模型中，我们都会观察到SDS对约束的高度收紧高达640％，并将优点数字提高到1600倍。
Measuring spectral distortions (SDs) of the cosmic microwave background (CMB) will provide new constraints on previously unexplored scales of the primordial power spectrum, allowing us to extend the probed parameter space by several orders of magnitude in $k$-space, which could have significant implications in the context of primordial black holes and gravitational waves, among others. Here we discuss how various models of inflation can be tightly constrained by the combination of current and future CMB SD and anisotropy experiments. In particular, we investigate the constraining power of SD experiments such as FIRAS, PIXIE, and PRISM in conjunction with CMB anisotropy probes such as Planck or CMB-S4 plus LiteBIRD. Building on the latest version of the Boltzmann solver CLASS (v3.0), here we also consistently marginalize over the possible galactic and extra-galactic foregrounds for the SD missions. With this numerical setup, we are able to realistically forecast the improvements that the increased lever-arm provided by the addition of the various SD missions will bring for several combinations of the aforementioned experiments. As a result, in all considered models we observe that SDs provide a highly significant tightening of the constraints by up to 640%, and increase the figure of merit up to a factor of around 1600.
