Optimal Smoothing for N-Body Codes

Details Optimal Smoothing for N-Body Codes Optimal Smoothing for N-Body Codes

1995-11-29

arxiv.org/abs/astro-ph/9511146v2

Astronomy and Astrophysics

Astrophysics

6 TEX pages, 3 PostScript figures, uses AASTEX, epsf.sty. Submitted to The Astronomical Journal, November 1995; revised Januar

Scientific paper

10.1086/117980

In any collisionless N-body code, there is an optimal choice for the
smoothing parameter that minimizes the average error in the force evaluations.
We show how to compute the optimal softening length in a direct-summation code
and demonstrate that it varies roughly as 1/N^(1/3).

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