N-point correlations in CDM and ΩCDM simulations

  title={N-point correlations in CDM and $\Omega$CDM simulations},
  author={Istvan Szapudi and Thomas Quinn and Joachim Gerhard Stadel and George Lake},
  journal={The Astrophysical Journal},
Higher order statistics are investigated in Ω cold dark matter (CDM) universes by analyzing 500 h-1 Mpc high-resolution tree N-body simulations with both Ω=1 and Ω<1. The amplitudes of the N-point correlation functions are calculated from moments of counts-in-cells determined by a pair of new algorithms especially developed for large simulations. This approach enables massive oversampling with 109-1014 cells for accurate determination of factorial moments from up to 47 million particles in the… 

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