Conformally symmetric traversable wormholes in f (G) gravity

We discuss non-static conformally symmetric traversable wormholes for spherically symmetric spacetime using the model f (G) = alpha G(n), where n > 0 and alpha is an arbitrary constant. We investigate wormhole solutions by taking two types of shape function and found that physically realistic wormholes exist only for even values of n. We also check the validity of flare-out condition, required for wormhole construction, for the shape functions deduced from two types of equation of state. It is found that this condition is satisfied by these functions in all cases except phantom case with non-static conformal symmetry.