Modified Gravity Explains Dark Matter?

TL;DR

This paper investigates whether a scalar particle from $F(R)$ modified gravity can serve as dark matter, analyzing constraints and compatibility with dark energy and screening mechanisms.

Contribution

It introduces the idea of scalarons from $F(R)$ gravity as dark matter candidates and derives constraints on model parameters.

Findings

Scalaron can potentially account for dark matter within certain parameter ranges.

Constraints on $F(R)$ gravity parameters are derived from dark matter considerations.

Discussion on screening mechanisms and dark energy compatibility is provided.

Abstract

We explore a new horizon of modified gravity from the viewpoint of the particle physics. As a concrete example, we take the $F(R)$ gravity to raise a question: can a scalar particle ("scalaron") derived from the $F(R)$ gravity be a dark matter candidate? We place the limit on the parameter in a class of $F(R)$ gravity model from the constraint on the scalaron as a dark matter. The role of the screening mechanism and compatibility with the dark energy problem are addressed.