2013/02/01 by Sergei Shandarin, Shandarin, Sergei
Physics and Astronomy · #Cosmology and Nongalactic Astrophysics (astro-ph.CO) #FOS: Physical sciences #astro-ph.CO
paper · pdf · doi:10.48550/arxiv.1302.0236
3 pages, 1 figure. Proceedings of the Thirteenth Marcel Grossman Meeting on General Relativity (Stockholm, Sweden, July 1-7, 2012), invited talk at the Parallel Session OC4 "New developments in the study of the large scale structure of the Universe"
arxiv created 2013/02/01 · arxiv updated 2013/02/04
A novel method allowing to compute density, velocity and other fields in cosmological N--body simulations with unprecedentedly high spatial resolution is described. It is based on the tessellation of the three-dimensional manifold representing cold dark matter in six-dimensional phase space. The density, velocity and other fields are computed by projecting the tessellation on configuration space. The application of this technique to cosmological N--body simulations in LambdaCDM cosmology reveals a far more elaborate cosmic web then dot plots or self--adaptive SPH. In addition, this method allows to uniquely define physical voids and identify and study the caustic surfaces directly.