Scale-free power spectrums in the delayed cosmology
  The delayed cosmology [JCAP 02(2012)046] assumes that the evolution of
geometries is delayed relative to that of matter and/or energies. This idea
allows inflation occur without inflaton fields or vacuum energies of any kind
as drivings. We considered the production and evolution of primordial
perturbations in this model. The results indicate that, with delaying, we could
get a nearly scale-free power spectrum of perturbations starting from a
radiation dominated early universe.
