Fig. 9.
Comparison of density profiles obtained with PPT and LPT. Upper panel: cluster density profile obtained by evolving the same initial conditions with PPT and LPT. Lower panel: test for a void profile. This demonstrates that PPT and LPT provide equivalent cosmic structures. The shaded regions indicate the uncertainty region of the profiles, corresponding to the standard deviation of 50 realisations. While the PPT and LPT show similar uncertainty regions for the cluster profile, the LPT has a larger standard deviation than the PPT in the void profile. This larger uncertainty is due to the poor sampling of the voids in the LPT model since most of the particles cluster in high-density regions.
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