SOME STUDIES OF THE GENERAL THEORY OF RELATIVITY'S UNIFORM AND ISOTROPIC COSMOS

Abstract

In the framework of General Relativity and assuming the Copernican principle, accounted for by the Friedman-Lemaitre-Robertson-Walker metric, a spatially flat universe is consistent with the cosmographic conversely, this condition, which is fulfilled by astrophysical measurements, necessarily requires spatial flatness. Here, we will construct some cosmological models assuming the validity of General Relativity, of Copernican principle (homogeneity and isotropy at large scale) and on dark energy pictured either by some non-ideal fluids or by canonical scalar fields interacting with dark matter. A theorist cannot appeal to this theory in order to justify their views.