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Testing dark energy models in the light of $$\sigma _8$$ σ 8 tension
European Physical Journal C: Particles and Fields
It has been pointed out that there exists a tension in σ_8-Ω_m measurement between CMB and LSS observation. In this paper we show that σ_8-Ω_m observations can be used to test the dark energy theories. We study two models, (1) Hu-Sawicki(HS) Model of f(R) gravity and (2) Chavallier-Polarski-Linder(CPL) parametrization of dynamical dark energy (DDE), both of which satisfy the constraints from supernovae. We compute σ_8 consistent with the parameters of these models. We find that the well knowndoi:10.1140/epjc/s10052-019-6634-6 fatcat:p7noprwjmfd4tcnp2hmlrfpqry