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Comment on N-body simulations of gravitational dynamics by Dehnen and Read

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 نشر من قبل Adrian Melott
 تاريخ النشر 2011
  مجال البحث فيزياء
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 تأليف Adrian L. Melott




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It is shown that the historical summary of the growth in size of N-body simulations as measured by particle number in this review is missing some key milestones. Size matters, because particle number with appropriate force smoothing is a key method to suppress unwanted discreteness, so that the initial conditions and equations of motion are appropriate to growth by gravitational instability in a Poisson-Vlasov system appropriate to a Universe with dark matter. Published strong constraints on what can be done are not included in the review.



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