Noether Symmetries in Gauss-Bonnet-teleparallel cosmology

TL;DR

This paper uses the Noether Symmetry Approach to determine the form of the generalized teleparallel gravity function $f(T_ ext{G}, T)$ and derives exact cosmological solutions within this framework.

Contribution

It introduces a method to fix the form of $f(T_ ext{G}, T)$ in teleparallel cosmology using symmetries, leading to new exact solutions.

Findings

The form of $f(T_ ext{G}, T)$ is constrained by Noether symmetries.

Exact cosmological solutions are derived for the specified model.

The approach links symmetry principles to the structure of teleparallel gravity models.

Abstract

A generalized teleparallel cosmological model, $f(T_\mathcal{G},T)$, containing the torsion scalar $T$ and the teleparallel counterpart of the Gauss-Bonnet topological invariant $T_{\mathcal{G}}$, is studied in the framework of the Noether Symmetry Approach. As $f(\mathcal{G}, R)$ gravity, where $\mathcal{G}$ is the Gauss-Bonnet topological invariant and $R$ is the Ricci curvature scalar, exhausts all the curvature information that one can construct from the Riemann tensor, in the same way, $f(T_\mathcal{G},T)$ contains all the possible information directly related to the torsion tensor. In this paper, we discuss how the Noether Symmetry Approach allows to fix the form of the function $f(T_\mathcal{G},T)$ and to derive exact cosmological solutions.