Evolution of the early Universe in the scale invariant theory
  Analytical solutions are obtained for the early cosmological phases in the
scale invariant models with curvature k=0. They complete the analytical
solutions already found in the matter--dominated era by (Jesus 2018). The
physical properties in the radiative era are derived from the conservation laws
and compared to those of current standard models. The critical runs of the
temperature T(MeV) and of the expansion rate H of the scale invariant models
with low densities, Omega_m=0.04, are quite similar at the time of
nucleosynthesis to those of standard models with Omega_m=0.30, leading to the
same freezing number ratio of neutrons to protons.These results are consistent
with the fact that the scale invariant models appear to not require the
presence of dark matter.
