Optimal Smoothing for N-Body Codes
classification
🌌 astro-ph
keywords
optimalcoden-bodysmoothingaveragechoicecodescollisionless
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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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