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It has been shown recently that phantom-like effect can be realized on thenormal branch of the DGP setup without introduction of any phantom matterneither in the bulk nor on the brane and therefore without violation of thenull energy condition. It has been shown also that inclusion of theGauss-Bonnet term in the bulk action modifies this picture via curvatureeffects. Here, based on the Lue-Starkman conjecture on the dynamical screeningof the brane cosmological constant in the DGP setup, we extend this proposal toa general DGP-inspired $f(R,\phi)$ model that stringy effects in theultra-violet sector of the theory are taken into account by inclusion of theGauss-Bonnet term in the bulk action. We study cosmological dynamics of thissetup, especially its phantom-like behavior and possible crossing of thephantom divide line especially with a non-minimally coupled quintessence fieldon the brane. In this setup, scalar field and curvature quintessence aretreated in a unified framework.

Phantom Mimicry on the Normal Branch of a DGP-inspired Braneworld Scenario with Curvature Effect