论文标题
揭示固有的flat $λ$ CDM偏见与标准化的蜡烛
Revealing Intrinsic Flat $Λ$CDM Biases with Standardizable Candles
论文作者
论文摘要
新兴的高红移宇宙学探针，尤其是类星体（QSOS），在flat $λ$ CDM框架内显示出对较大物质密度的偏爱，$ω_{m} \约1 $。在这里，使用标准化QSO的risaliti-lusso关系，我们证明了QSO恢复\ textit {same} planck- $λ$ cdm Universe作为IA型超novae（sn），$ω_m\ 0.3 $ \ 0.3 $在较低的redshifts $ 0 <z $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 $ 0.7 = 1 $）在较高的红移$ z \ gtrsim 1 $。我们说明了相同的趋势，即增加$ω_{m} $，并使用RedShift降低$ H_0 $，但在SN中，统计数项较差，可以阻止明确的陈述。我们从物理上解释了为什么在平面$λ$ CDM宇宙学中预期的趋势，说明了带有模拟万神殿数据的内在偏见和非高斯尾巴，并确定了BAO的类似趋势$ z = 1 $。我们的结果突出显示了平面$λ$ CDM Universe中的内在偏见，从而增加$ω_m$，$ H_0 $减少，$ S_8 $增加了有效的红移，从而提供了对$λ$ CDM紧张张力的新观点；即使在普朗克 - $λ$ CDM宇宙中，目前的紧张局势也可能是预期的。
Emerging high redshift cosmological probes, in particular quasars (QSOs), show a preference for larger matter densities, $Ω_{m} \approx 1$, within the flat $Λ$CDM framework. Here, using the Risaliti-Lusso relation for standardizable QSOs, we demonstrate that the QSOs recover the \textit{same} Planck-$Λ$CDM Universe as Type Ia supernovae (SN), $Ω_m \approx 0.3$ at lower redshifts $ 0 < z \lesssim 0.7$, before transitioning to an Einstein-de Sitter Universe ($Ω_m =1$) at higher redshifts $z \gtrsim 1$. We illustrate the same trend, namely increasing $Ω_{m}$ and decreasing $H_0$ with redshift, in SN but poor statistics prevent a definitive statement. We explain physically why the trend is expected in the flat $Λ$CDM cosmology, illustrate the intrinsic bias and non-Gaussian tails with mock Pantheon data, and identify a similar trend in BAO below $z=1$. Our results highlight an intrinsic bias in the flat $Λ$CDM Universe, whereby $Ω_m$ increases, $H_0$ decreases and $S_8$ increases with effective redshift, thus providing a new perspective on $Λ$CDM tensions; even in a Planck-$Λ$CDM Universe the current tensions might have been expected.
