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arXiv 1808.05660astro-ph.CO
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将暗能量模型与哈勃望远镜的增长率数据进行比较

Comparing Dark Energy models with Hubble versus Growth Rate data

Bryan Sagredo, Javier Silva Lafaurie, Domenico Sapone

摘要:

在这项工作中,我们对最近提出的联合宇宙生长和宇宙膨胀图[1]进行了分析,以比较几个暗能量模型,使用[2]中显示的品质因数,其中包括在$fσ_8(z)-H(z)$图中的$1σ$置信区域的倒数。我们的分析还包括通过执行不同的统计标准来比较模型:贝叶斯因子[3],贝叶斯信息标准[4]和赤池信息标准[5]。我们还开发了一个三维的品质因数,同时考虑到增长率和哈勃参数的误差。主要思想是考虑几个宇宙学模型,并将它们与不同的统计标准进行比较,以突出每个标准的差异和准确性。

英文摘要:

In this work we perform an analysis on the recently proposed conjoined cosmic growth and cosmic expansion diagram [1] to compare several dark energy models using the Figure of Merit showed in [2], which consists in the inverse of the $1σ$ confidence region in the $fσ_8(z)-H(z)$ plot. Our analysis also consists of comparing the models by performing different statistical criteria: Bayes factor [3], the Bayesian Information Criteria [4] and the Akaike Information Criterion [5]. We also developed a 3-dimensional Figure of Merit to account simultaneously for the errors on the growth rate and the Hubble parameter. The main idea is to consider several cosmological models and compare them with the different statistical criteria in order to highlight the differences and the accuracies of each single criterion.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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