Cosmological model with time varying deceleration parameter in F(R, G) gravity

In this paper, we study the dynamical behaviour of the Universe in the F(R, G) theory of gravity, where R and G respectively denote the Ricci scalar and Gauss-Bonnet invariant. Our wide analysis encompasses the energy conditions, cosmographic parameters, Om(z) diagnostic, stability and the viability of reconstructing the referred model through a scalar field formalism. The model obtained here shows the quintessence like behaviour at late times.

Automated summary

This paper studies the dynamical behavior of the Universe in the F(R, G) theory of gravity, covering energy conditions, cosmographic parameters, Om(z) diagnostic, stability, and the viability of reconstructing the model through a scalar field formalism. The obtained model exhibits quintessence-like behavior at late times.