Modified gravity inspired DGP brane cosmology

TL;DR

This paper explores a modified gravity-inspired DGP brane cosmology with a scalar field, demonstrating that it predicts a universe with power-law accelerated expansion and altered gravitational potential due to scalar field effects.

Contribution

It introduces a scalar field into DGP brane cosmology motivated by modified gravity, analyzing its impact on gravitational potential and cosmic acceleration.

Findings

Universe exhibits power-law accelerated expansion

Scalar field modifies gravitational potential mass

Model aligns with observational cosmological expansion

Abstract

We consider a DGP brane scenario where a scalar field is present on the brane through the introduction of a scalar potential, itself motivated by the notion of modified gravity. This theory predicts that the mass appearing in the gravitational potential is modified by the addition of the mass of the scalar field. The cosmological implications that such a scenario entails are examined and shown to be consistent with a universe expanding with power-law acceleration.