CMB Fluctuation Amplitude from Dark Energy Partitions
  It is assumed that the dark energy observed today is frozen as a result of a phase transition involving the source of that energy. Postulating that the dark energy de-coherence which results from this phase transition drives statistical variations in the energy density specifies a class of cosmological models in which the cosmic microwave background (CMB) fluctuation amplitude at last scattering is approximately $10^{-5}$. 
James V. Lindesay, H. Pierre Noyes, E. D. Jones