  Previously, in Penner (2016), a theory of gravitational anti-screening was
shown to lead to the Baryonic Tully-Fisher Relationship. In addition, it was
shown to agree with the observed rotation curve of the Galaxy, the observed
features in the rotational curves of other spiral galaxies, and with
observations of the Coma cluster. In this paper, the theory is now shown to be
consistent with a geometrically flat universe. Using a model of the
distribution of superclusters, the overall density parameter of the universe,
as determined by the theory, is equal to 1.08 plus/mimus 0.19. In addition, the
energy density which falls out from the theory has a negative pressure
associated with it. This, along with a model of the evolution of superclusters,
leads to an acceleration of the universal expansion without the requirement of
dark energy. The theory of gravitational anti-screening therefore provides an
alternative to the LCDM model of cosmology.
