Open AccessA fitting formula for the non‐linear evolution of the bispectrum
Author(s) -
Scoccimarro Román,
Couchman H. M. P.
Publication year - 2001
Publication title -
monthly notices of the royal astronomical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.058
H-Index - 383
eISSN - 1365-2966
pISSN - 0035-8711
DOI - 10.1046/j.1365-8711.2001.04281.x
Subject(s) - bispectrum , physics , dark matter , cold dark matter , scale (ratio) , statistical physics , astrophysics , computational physics , mathematics , statistics , quantum mechanics , spectral density
We present a fitting formula for the non‐linear evolution of the bispectrum in cold dark matter (CDM) models, obtained from measurements in high‐resolution numerical simulations. The formula interpolates between the perturbative and highly non‐linear regimes, and generalizes previous results obtained for scale‐free initial conditions.