Wormhole solutions and energy conditions in f(R,G) gravity

M Farasat Shamir,G Mustafa,Saad Waseem,Mushtaq Ahmad

Figure 4. The development of ρ and $\rho +{p}_{r}$ is shown. Here, we assume $\eta =15$ and ${r}_{0}\,=\,0.2$ with $\rho \lt 0$ (Yellow), $\rho \gt 0$ (Red), $\rho +{p}_{r}\lt 0$ (Yellow), and $\rho +{p}_{r}\gt 0$ (Red).