论文标题
通过CMB镜头仔细检查早期的暗能量模型
Scrutinizing Early Dark Energy models through CMB lensing
论文作者
论文摘要
我们通过考虑两个不同的宇宙微波背景（CMB）数据集研究在镜头异常情况下的早期暗能量模型：完整的Planck，第二个主要基于SPTPOL和PLANCK温度（$ L <1000 $）。我们将允许现象学镜头幅度（$ \ al $）的影响与统一不同。我们发现，通过与参数$ h_0 $和$ s_8 $的相关性，虽然不立即受到镜头异常影响的早期黑能的比例可能会引起轻微的偏差。 {我们也通过将牛顿镜头电位边缘化，在允许振幅重新依赖性和比例依赖性时扩展分析。建模对CMB谱的理论镜头势和声学平滑的重新制定，我们发现只有在中等水平上，可以通过修改透镜信号本身来解决异常，并且在$ \ \ sim2σ$中的附加$ \ al \ sim 1.1 $ 1.1 $ 1.1 $应通过预聚类物理学来解决。最后，我们还评论了非平板（$ω_ {\ rm k} \ neq 0 $）场景中的镜头异常，发现宇宙的较晚平坦度是牢固的，并且与CMB光谱中的额外平滑性不相关。
We investigate early dark energy models in the context of the lensing anomaly by considering two different Cosmic Microwave Background (CMB) datasets: a complete Planck, and a second one primarily based on SPTPol and Planck temperature ($l<1000$). We contrast the effects of allowing the phenomenological lensing amplitude ($\Al$) to be different from unity. We find that the fraction of early dark energy, while not immediately affected by the lensing anomaly, can induce mild deviations, through correlations with the parameters $H_0$ and $S_8$. {We extend the analysis also by marginalizing the Newtonian lensing potential, finding a $\gtrsim 1σ$ deviation, when allowing for an amplitude rescaling and scale-dependence. Modeling the rescaling of the theory lensing potential and the acoustic smoothing of the CMB spectra, we find that only to a moderate level the anomaly can be addressed by modifying the lensing signal itself and that an additional $\Al \sim 1.1$ at $\sim 2σ$ significance should be addressed by pre-recombination physics. Finally, we also comment on the lensing anomaly in a non-flat ($Ω_{\rm k} \neq 0$) scenario, finding that the late-time flatness of the universe is robust and not correlated with the additional smoothing in the CMB spectra.
