A Bayesian statistical analysis using redshift space distortions data is performed to test a model of Symmetric Teleparallel Gravity where gravity is non-metrical. The cosmological background mimics a $\Lambda$CDM evolution but differences arise in the perturbations. The linear matter fluctuations are numerically evolved and the study of the growth rate of structures is analysed in this cosmological setting. The best fit parameters reveal that the ${\sigma }_8$ tension between Planck and Large Scale Structure data can be alleviated within this framework.

中文翻译：

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测试中 $F（问）$ 重力和红移空间扭曲

进行了使用红移空间失真数据的贝叶斯统计分析，以测试重力为非度量的对称Teleparallel重力模型。宇宙学背景模仿一个$\Lambda$CDM的发展，但扰动却出现差异。在此宇宙学背景下，对线性物质涨落进行了数值演化，并分析了结构增长率的研究。最佳拟合参数表明${\sigma }_8$ 在此框架内，可以缓解普朗克与大型结构数据之间的紧张关系。