estimate presented here can be taken as a starting pointfor investigating questions beyond linear theory, in the complete general-relativistic
perturbation analysisincluding the electric-type field B0i.
•One mighthope that the acoustic horizon does resurrect at very small scales to providethe constant density cores seen in galaxies dominated by dark
newdegrees of freedom to some extent
simplicity of quartessence unification.
the model must be confronted with large-scale structure and the CMB.