New agegraphic dark energy in f(G, T) gravity

Abstract

This paper is devoted to the reconstruction paradigm for new agegraphic dark energy model in the context of f(G, T) gravity (G and T denote the Gauss–Bonnet invariant and trace of the energy-momentum tensor). To accomplish this, we choose the correspondence scenario for pressureless perfect fluid configuration in the framework of flat FRW universe. The cosmic behavior of reconstructed models is analyzed through cosmic diagnostic parameters and phase planes. It is found that the deceleration parameter indicates accelerated regime while the equation of state parameter gives the phantom phase for non-conserved and quintessence universe for conserved energy-momentum tensor. The squared speed of sound parameter represents the stability of the conserved model for late-time cosmic evolutionary paradigm whereas instability for the non-conserved regime. The trajectories of ωeff−ωeff′ plane correspond to thawing as well as freezing region for the non-conserved and conserved scenario, respectively. The r−s plane gives phantom as well as the non-phantom regime for conserved and Chaplygin gas model for the non-conserved paradigm. We conclude that the resulting models exhibit self-consistent quintessence as well as the phantom-like universe for appropriate choice of free parameters.