论文标题
限制聚类和光滑的精髓
Limits on Clustering and Smooth Quintessence from the EFTofLSS
论文作者
论文摘要
我们将大规模结构（EFTOFLSS）的有效田地理论应用于聚类的典型模型，这使我们能够始终描述状态$ W <-1 $的典型方程的参数区域。首先，我们将红移空间中有偏见的示踪剂的描述扩展到了聚类典型的存在，并计算一环功率谱。我们使用确切的时间依赖性求解eftoflss方程，这与获得公正的约束有关。然后，拟合老板预先建设的功率谱测量，老板后重建BAO测量值，6DF/mgs和Eboss的BAO测量值，Pantheon的Supernovae，以及BBN的先前，我们绑定了状态参数的Quintessence Quintessence Quintession Quintession Quintessign $ w = -1.011 _ { - 0.048}^{+0.053} $ at $ 68 \％$ c.l ..进一步与普朗克结合，我们获得$ W = -1.028 _ { - 0.030}^{+0.037} $ in Bundersonse $ 68 \％$ C.L。 -1 $：结合所有数据集，我们得到$ -1 \ leq w <-0.979 $ at $ 68 \％$ c.l ..这些结果强烈支持宇宙常数。
We apply the Effective Field Theory of Large-Scale Structure (EFTofLSS) to analyze cosmological models with clustering quintessence, which allows us to consistently describe the parameter region in which the quintessence equation of state $w < - 1$. First, we extend the description of biased tracers in redshift space to the presence of clustering quintessence, and compute the one-loop power spectrum. We solve the EFTofLSS equations using the exact time dependence, which is relevant to obtain unbiased constraints. Then, fitting the full shape of BOSS pre-reconstructed power spectrum measurements, the BOSS post-reconstruction BAO measurements, BAO measurements from 6DF/MGS and eBOSS, the Supernovae from Pantheon, and a prior from BBN, we bound the clustering quintessence equation of state parameter $w=-1.011_{-0.048}^{+0.053}$ at $68\%$ C.L.. Further combining with Planck, we obtain $w=-1.028_{-0.030}^{+0.037}$ at $68\%$ C.L.. We also obtain constraints on smooth quintessence, in the physical regime $w \geq -1$: combining all datasets, we get $-1\leq w < - 0.979$ at $68\%$ C.L.. These results strongly support a cosmological constant.
