TreePM: A code for Cosmological N-Body Simulations

Details TreePM: A code for Cosmological N-Body Simulations TreePM: A code for Cosmological N-Body Simulations

1999-11-03

arxiv.org/abs/astro-ph/9911025v2

J.Astrophys.Astron. 23 (2002) 185-196

Astronomy and Astrophysics

Astrophysics

published version, significant revisions

Scientific paper

10.1007/BF02702282

We describe the TreePM method for carrying out large N-Body simulations to study formation and evolution of the large scale structure in the Universe. This method is a combination of Barnes and Hut tree code and Particle-Mesh code. It combines the automatic inclusion of periodic boundary conditions of PM simulations with the high resolution of tree codes. This is done by splitting the gravitational force into a short range and a long range component. We describe the splitting of force between these two parts. We outline the key differences between TreePM and some other N-Body methods.

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