B. J. Barros, T. Barreiro, T. S. Koivisto, N. J. Nunes
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 ΛCDM 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 σ8 tension between Planck and Large Scale Structure data can be alleviated within this framework.
General Relativity and Quantum Cosmology; Astrophysics - Cosmology and Nongalactic Astrophysics
Physics of the Dark Universe