DGP Cosmology with a Non-Minimally Coupled Scalar Field on the Brane

TL;DR

This paper explores a braneworld cosmology model inspired by DGP theory, incorporating a non-minimally coupled scalar field on the brane, analyzing its gravitational, cosmological, and observational implications.

Contribution

It introduces a novel DGP-inspired model with a non-minimally coupled scalar field on the brane, analyzing its gravitational potential, cosmological evolution, and observational constraints.

Findings

Modified gravitational potential due to non-minimal coupling

Compatibility with late-time cosmic acceleration

Relations with dark radiation formalism

Abstract

We construct a DGP inspired braneworld scenario where a scalar field non-minimally coupled to the induced Ricci curvature is present on the brane. First we investigate the status of gravitational potential with non-minimal coupling and observational constraints on this non-minimal model. Then we further deepen the idea of embedding of FRW cosmology in this non-minimal setup. Cosmological implications of this scenario are examined with details and the quintessence and late-time expansion of the universe within this framework are examined. Some observational constraints imposed on this non-minimal scenario are studied and relation of this model with dark radiation formalism is determined with details.