Braneworld cosmology in $f(R,T)$ gravity

TL;DR

This paper develops a braneworld cosmology model within the $f(R,T)$ gravity framework, deriving field equations and showing that the resulting cosmological parameters align with current observational data, offering an alternative universe description.

Contribution

It introduces a novel derivation of field equations for braneworld models in $f(R,T)$ gravity, extending previous models to include this generalized theory.

Findings

Cosmological parameters match observational constraints.

Supports $f(R,T)$ gravity as a viable alternative for universe dynamics.

Provides a new theoretical framework for braneworld cosmology.

Abstract

Braneworld scenarios consider our observable universe as a brane embedded in a 5D space, named bulk. In this work, I derive the field equations of a braneworld model in a generalized theory of gravitation, namely $f(R,T)$ gravity, with $R$ and $T$, representing the Ricci scalar and the trace of the energy-momentum tensor, respectively. The cosmological parameters obtained from this approach are in agreement with recent constraints from Supernovae Ia data combined with baryon acoustic oscillations and cosmic microwave background observations, favouring such an alternative description of the universe dynamics.