1997/11/10 by Randall J. Splinter, Splinter, Randall J., Adrian L. Melott +4
Engineering · Physics and Astronomy · #Astrophysics (astro-ph) #Cosmology and Gravitation Theories #FOS: Physical sciences #High Energy Physics - Phenomenology (hep-ph) #Magnetic confinement fusion research #Particle accelerators and beam dynamics #Scientific Research and Discoveries #Statistical Mechanics and Entropy #astro-ph #hep-ph
paper · pdf · doi:10.48550/arxiv.astro-ph/9711105
Latex, 12 pages, with 3 figures
openalex publication_date 1997/11/10 · arxiv created 1997/11/11 · arxiv updated 2009/11/30 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
We report on a series of tests of agreement between three types of N-body\nsimulations: PM, P3M, and Tree codes. We find good agreement in both the\nindividual and the statistical properties only on scales larger than the mean\ninterparticle separation. As a result, we question most numerical results at\nand below below galaxy scales, either concerning primordial dark matter or\nbaryonic matter coupled to it by gravitation. Mass resolution (specifically,\nsufficient to have the mean interparticle separation comparable to the\nsmoothing scales) appears be necessary for results to converge.\n