How to simulate the Universe in a Computer

  title={How to simulate the Universe in a Computer},
  author={Alexander Knebe},
  • Alexander Knebe
  • Published 2008
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-particle summation… CONTINUE READING