Early Dark Energy with Power-law F(R) Gravity

Abstract

We study a power-law $F(R)$ gravity with an early dark energy term, that can describe both the early-time and the late-time acceleration of the Universe. We confront this scenario with recent observational data including the Pantheon Type Ia supernovae, measurements of the Hubble parameter $H(z)$ (Cosmic Chronometers), data from Baryon Acoustic Oscillations and standard rulers data from the Cosmic Microwave Background (CMB) radiation. The model demonstrates some achievements in confronting with these observations and can be compared with the $\Lambda$-Cold-Dark-Matter model. In particular, in both models we obtain very close estimates for the Hubble constant $H_0$, but it is not true for ${\Omega }_m^0$. The early dark energy term supports viability of the considered $F(R)$ gravity model.

arXiv commentPLB Accepted

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