Universal Non-Gaussian Initial Conditions for N-body Simulations

Details Universal Non-Gaussian Initial Conditions for N-body Simulations Universal Non-Gaussian Initial Conditions for N-body Simulations

2011-08-18

arxiv.org/abs/1108.3813v1

Astronomy and Astrophysics

Astrophysics

Cosmology and Extragalactic Astrophysics

7 pages, 3 figures

Scientific paper

In this paper we present the implementation of an efficient formalism for the generation of arbitrary non-Gaussian initial conditions for use in N-body simulations. The methodology involves the use of a separable modal approach for decomposing a primordial bispectrum or trispectrum. This approach allows for the far more efficient generation of the non-Gaussian initial conditions already described in the literature, as well as the generation for the first time of non-separable bispectra and the special class of diagonal-free trispectra. The modal approach also allows for the reconstruction of the spectra from given realisations, a fact which is exploited to provide an accurate consistency check of the simulations.

Affiliated with

Also associated with

No associations

Rating

Universal Non-Gaussian Initial Conditions for N-body Simulations does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.

If you have personal experience with Universal Non-Gaussian Initial Conditions for N-body Simulations, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Universal Non-Gaussian Initial Conditions for N-body Simulations will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFWR-SCP-O-181777