Exact solution to perturbative conformal cosmology from recombination
  until the current era
  In a previous paper (P. D. Mannheim, Phys. Rev. D 102, 123535 (2020)) we
studied cosmological perturbation theory in the cosmology associated with the
fourth-order derivative conformal gravity theory, and provided an exact
solution to the theory in the recombination era. In this paper we present an
exact solution that holds all the way from recombination until the current era.
