论文标题
宇宙学交织IV：宇宙的时代及其曲率
Cosmology Intertwined IV: The Age of the Universe and its Curvature
论文作者
论文摘要
对宇宙曲率的精确度量对宇宙学至关重要，因为它不仅可以证实原始通货膨胀的范式，而且可以帮助区分不同的早期宇宙场景。最近的观察结果与空间平坦的标准$λ$冷暗物质（$λ$ cdm）模型一致，但显示出了紧张局势仍然允许（在某些情况下，甚至建议）与平坦宇宙的偏差百分比。特别是，假设名义上的可能性，普朗克宇宙微波背景功率光谱在超过99 \％的置信度下更喜欢封闭的宇宙。尽管新物理可能会起作用，但这种异常可能是由于无法解决的系统错误或仅仅是统计波动的结果。但是，由于正曲率允许宇宙的较大年龄，因此对最古老物体的年龄的准确确定为吸烟枪提供了确认或伪造当前的flat $λ$ CDM模型的烟枪。
A precise measurement of the curvature of the Universe is of primeval importance for cosmology since it could not only confirm the paradigm of primordial inflation but also help in discriminating between different early Universe scenarios. The recent observations, while broadly consistent with a spatially flat standard $Λ$ Cold Dark Matter ($Λ$CDM) model, are showing tensions that still allow (and, in some cases, even suggest) a few percent deviations from a flat universe. In particular, the Planck Cosmic Microwave Background power spectra, assuming the nominal likelihood, prefer a closed universe at more than 99\% confidence level. While new physics could be in action, this anomaly may be the result of an unresolved systematic error or just a statistical fluctuation. However, since a positive curvature allows a larger age of the Universe, an accurate determination of the age of the oldest objects provides a smoking gun in confirming or falsifying the current flat $Λ$CDM model.
