  It seems that new WMAP data requires a fit with a primordial spectrum
containig small negative tilt index in addition to the featureless
Harrison-Zeldovich- Peebles spectrum thus implying a broken scale invariance.
We show that the data could be otherwise interpreted by a scale invariant
primordial spectrum with the scale non-invariant evolution of density contrast
using the Press-Schechter formalism. The estimate of the acceleration
parameter, as a source of the inhomogeneity of spacetime, is made by searching
for the minima of the deviation measure defined by the Press-Schechter mass
functions for this interpretation compared to the assumptions implicit in the
WMAP fit.
