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arXiv · 2004.00864

Local gravity test of unified models of inflation and dark energy in $f(R)$ gravity

Mai Yashiki·Nobuyuki Sakai·Ryo Saito
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Abstract

We consider $f(R)$ gravity theories which unify $R^n$ inflation and dark energy models. First, from the final Planck data of the cosmic microwave background, we obtain a condition, $1.977 < n < 2.003$. Next, under this constraint, we investigate local-gravity tests for three models. We find that the $R^n$ term can dominate over the dark energy term even at the Earth's curvature scale, contrary to intuition; however, the $R^n$ term does not relax or tighten the constraints on the three models.

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Mai Yashiki, Nobuyuki Sakai, Ryo Saito. 2020-04-02. Local gravity test of unified models of inflation and dark energy in $f(R)$ gravity. https://doi.org/10.1103/physrevd.102.043504

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