论文标题
关于$fσ_8$张力与其高斯流程预测之间的变性
On the degeneracy between $fσ_8$ tension and its Gaussian process forecasting
论文作者
论文摘要
在本文中，我们使用马尔可夫链蒙特卡洛算法来重建宇宙宇宙结构的生长和演变[1]。我们估计通过内核超参数的最大化和通过对参数空间进行完整探索的重建来计算的重建之间的差异。我们发现，这两种方法之间的区别为$ 1 \％$。此外，我们将结果与普朗克协作2018获得的结果进行比较，假设$λ$ CDM模型，我们发现在红移范围内没有统计学上的显着差异，这是$fσ_{8} $的重建。
In this paper we reconstruct the growth and evolution of the cosmic structure of the Universe using Markov Chain Monte Carlo algorithms for Gaussian processes [1]. We estimate the difference between the reconstructions that are calculated through a maximization of the kernel hyperparameters and those that are obtained with a complete exploration of the parameter space. We find that the difference between these two approaches is of the order of $1\%$. Furthermore, we compare our results with those obtained by Planck Collaboration 2018 assuming a $Λ$CDM model and we do not find a statistically significant difference in the redshift range were the reconstructions of $fσ_{8}$ have been made.
