The mass density field in simulated non-Gaussian scenarios

In this work we study the properties of the mass density field in the non-Gaussian world models simulated by Grossi et al. (2007). We find that the imprints of primordial non-Gaussianity are preserved during the evolution in the low-density tail of the one-point density probability distribution function. Deviations of the order of 10-20 per cent from the Gaussian case can be found out to the present epoch in low-density environments, hence suggesting that void-based statistics may provide a powerful method to detect non-Gaussianity. Higher-order statistics of the density field, like the skewness or the kurtosis, are less effective in this respect except, perhaps, at high redshifts.