Dark Matter, Discreteness and Collision Error in Cosmological N-Body Simulations

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dc.creatorSplinter, Randall J.
dc.creatorMelott, Adrian L.
dc.creatorShandarin, Sergei F.
dc.date1997-11-11
dc.date.accessioned2026-07-07T02:25:00Z
dc.date.available2026-07-07T02:25:00Z
dc.descriptionWe report on a series of tests of agreement between three types of N-body simulations: PM, P$^3$M, and Tree codes. We find good agreement in both the individual and the statistical properties only on scales larger than the mean interparticle separation. As a result, we question most numerical results at and below below galaxy scales, either concerning primordial dark matter or baryonic matter coupled to it by gravitation. Mass resolution (specifically, sufficient to have the mean interparticle separation comparable to the smoothing scales) appears be necessary for results to converge.
dc.descriptionLatex, 12 pages, with 3 figures
dc.identifierhttps://arxiv.org/abs/astro-ph/9711105
dc.identifierhttp://arxiv.org/abs/astro-ph/9711105
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/11772
dc.subjectAstrophysics
dc.subjectHigh Energy Physics - Phenomenology
dc.titleDark Matter, Discreteness and Collision Error in Cosmological N-Body Simulations
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