论文标题
Boss和Eboss数据追踪的100亿年宇宙进化的模型 - 不合时宜的解释
Model-agnostic interpretation of 10 billion years of cosmic evolution traced by BOSS and eBOSS data
论文作者
论文摘要
We present the first model-agnostic analysis of the complete set of Sloan Digital Sky Survey III (BOSS) and -IV (eBOSS) catalogues of luminous red galaxy and quasar clustering in the redshift range $0.2\leq z \leq 2.2$ (10 billion years of cosmic evolution), which consistently includes the baryon acoustic oscillations (BAO), redshift space distortions （RSD）以及转移函数签名的形状，来自傅立叶空间中的前后重建目录。这种方法补充了仅关注BAO和RSD签名的标准分析技术，以及采用特定基础宇宙学模型来执行分析的全模型方法。然后，这些独立于模型的结果可以在选择的宇宙学模型的背景下很容易解释。 In particular, when combined with $z>2.1$ Ly-$α$ BAO measurements, the clustering BAO, RSD and {\it Shape} parameters can be interpreted within a flat-$Λ$CDM model yielding $h=0.6816\pm0.0067$, $Ω_{\rm m}=0.3001\pm0.0057$ and $ 10^{9} \ times a_s = 2.43 \ pm0.20 $（或$σ_8= 0.858 \ pm0.036 $），在baryon密度上有一个大爆炸核合成。没有任何外部数据集，仅Boss和Eboss数据就意味着$ω_ {\ rm m} = 0.2971 \ pm 0.0061 $和$ 10^{9} \ times a_s = 2.39^{+0.24} _ {+0.24} _ { - 0.43} $（或$ n = 0.857575757 \ pmpm）。对于超过$λ$ CDM的型号，仅EBOSS数据（与Planck结合使用）将中微子质量的总和限制为$σm_ν<0.40 $ eV，而BBN先验（$σm_ν<0.082 $ ev）在95 \％\％cl，曲率能量密度为$ fosity cl，至$ω__\ MATHRM { -0.022 _ { - 0.038}^{+0.032} $（$ω__\ MATHRM {k} = 0.0015 \ pm 0.0016 $）和状态参数到$ W = -0.998 _ _ { - 0.073}^{ - 0.073}^{+0.073}^{+0.073} $ w = -0.998 （$ w = -1.093 _ { - 0.044}^{+0.048} $）在68 \％cl没有BBN之前。
We present the first model-agnostic analysis of the complete set of Sloan Digital Sky Survey III (BOSS) and -IV (eBOSS) catalogues of luminous red galaxy and quasar clustering in the redshift range $0.2\leq z \leq 2.2$ (10 billion years of cosmic evolution), which consistently includes the baryon acoustic oscillations (BAO), redshift space distortions (RSD) and the shape of the transfer function signatures, from pre- and post-reconstructed catalogues in Fourier space. This approach complements the standard analyses techniques which only focus on the BAO and RSD signatures, and the full-modeling approaches which assume a specific underlying cosmology model to perform the analysis. These model-independent results can then easily be interpreted in the context of the cosmological model of choice. In particular, when combined with $z>2.1$ Ly-$α$ BAO measurements, the clustering BAO, RSD and {\it Shape} parameters can be interpreted within a flat-$Λ$CDM model yielding $h=0.6816\pm0.0067$, $Ω_{\rm m}=0.3001\pm0.0057$ and $10^{9}\times A_s= 2.43\pm0.20$ (or $σ_8=0.858\pm0.036$) with a Big Bang Nucleosynthesis prior on the baryon density. Without any external dataset, the BOSS and eBOSS data alone imply $Ω_{\rm m}=0.2971\pm 0.0061$ and $10^{9}\times A_s=2.39^{+0.24}_{-0.43}$ (or $σ_8=0.857\pm0.040$). For models beyond $Λ$CDM, eBOSS data alone (in combination with Planck) constrain the sum of neutrino mass to be $Σm_ν< 0.40$ eV with a BBN prior ($Σm_ν<0.082$ eV) at 95\% CL, the curvature energy density to $Ω_\mathrm{k} = -0.022_{-0.038}^{+0.032}$ ($Ω_\mathrm{k} = 0.0015\pm 0.0016$) and the dark energy equation of state parameter to $w=-0.998_{-0.073}^{+0.085}$ ($w=-1.093_{-0.044}^{+0.048}$) at 68\% CL without a BBN prior.
