论文标题
非标准中微子宇宙学稀释镜头异常
Non-standard neutrino cosmology dilutes the lensing anomaly
论文作者
论文摘要
尽管标准宇宙学模型取得了令人印象深刻的成功，但几个异常却无视其胜利。其中包括所谓的镜头异常：普朗克卫星观察到的CMB重力镜头比预期的要强。尽管中微子在CMB镜头中的关键作用，但中微子在这种异常中的作用大多被忽略了，因为在标准情况下，它们倾向于增加张力。在这里，我们表明这很大程度上取决于假定的状态中微子方程。我们证明，如果中微子尚未发现远距离相互作用，则镜头模式会受到显着影响，从而使镜头异常作为统计波动。因此，我们的结果打开了一个窗口，将异常的CMB镜头与中微子性质的当前和未来宇宙学，天体物理和实验室测量联系起来。
Despite the impressive success of the standard cosmological model, several anomalies defy its triumph. Among them is the so-called lensing anomaly: the Planck satellite observes stronger CMB gravitational lensing than expected. The role of neutrinos in this anomaly has been mostly overlooked, despite their key role in CMB lensing, because in the standard scenario they tend to increase the tension. Here, we show that this strongly depends on the assumed neutrino equation of state. We demonstrate that if neutrinos have yet undiscovered long-range interactions, the lensing pattern is significantly affected, rendering the lensing anomaly as a statistical fluctuation. Our results thus open up a window to link anomalous CMB lensing with present and future cosmological, astrophysical, and laboratory measurements of neutrino properties.
