
%0 Journal Article
%A Knebe, Alexander 
%T How to Simulate the Universe in a Computer
%J Publications of the Astronomical Society of Australia
%D 2005/08/30
%V 22
%N 3
%P 184-189
%K cosmology: theory &#8211; cosmology: dark matter &#8211; methods: N-body simulations &#8211; methods: numerical
%R https://doi.org/10.1071/AS04059
%U https://www.publish.csiro.au/paper/AS04059 
%X In this contribution a broad overview of the methodologies of cosmological N-body simulations and a short introduction explaining the general idea behind such simulations is presented. After explaining how to set up the initial conditions using a set of N particles two (diverse) techniques are presented for evolving these particles forward in time under the influence of their self-gravity. One technique (tree codes) is solely based upon a sophistication of the direct particle&#8211;particle summation whereas the other method relies on the continuous (de-)construction of arbitrarily shaped grids and is realized in adaptive mesh refinement codes. 
