From inflation to dark energy in the non-minimal modified gravity

TL;DR

This paper explores a non-minimal modified gravity model that unifies early inflation and late-time acceleration, showing matter can be screened at late times, making it effectively invisible in the current universe.

Contribution

It demonstrates that non-minimal coupling in modified gravity can unify inflation and dark energy, with matter screening at late times, extending viability beyond standard models.

Findings

Unified description of inflation and dark energy achieved.

Matter screening occurs at late times, reducing its detectability.

Model passes local tests and aligns with $\\Lambda$CDM.

Abstract

We consider the modified gravity non-minimally coupled with matter Lagrangian for the description of early-time and late-time universe. Such $F(R)$ ($F(G)$) gravity in the absence of non-minimal coupling is viable theory which passes the local tests and reproduces the $\Lambda$CDM era. For qualitatively similar choice of non-minimal gravitational coupling function it is shown that the unified description of early-time inflation and late-time cosmic acceleration is possible. It is interesting that matter (scalar) which supports the inflationary era is gravitationally screened at late times. Hence, it may be effectively invisible at current universe.