# Kernel independent fast multipole method for Yukawa potential [closed]

Has anybody used the KIFMM (https://web.stanford.edu/~lexing/fmm.pdf) for the Yukawa potential?

## closed as unclear what you're asking by sssssssssssss, Christian Clason, Mauro Vanzetto, nicoguaro♦Sep 28 '18 at 16:09

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• please clarify your question and perhaps elaborate on what you mean by "special scaling" – sssssssssssss Sep 26 '18 at 11:20
• If I could I would, but I do not know which scaling that is needed. It just says so on their webpage. Concerning the KIFMM I wonder if anyone has applied it successfully on the Yukawa potential. – Raibyo Sep 27 '18 at 12:25
• Then, how do you expect to obtain suggestions? – nicoguaro Sep 27 '18 at 13:58
• The KIFMM is kernel-independent, meaning (in this instance) that you can feed the FMM algorithm a handle to your kernel function and it evaluates the N-body type calculation in O(N) time. The Yukawa kernel is no exception. It seems likely to me that the "scaling" you're talking about refers to a particular optimization of the FMM implementation when the kernel function is homogeneous, i.e. $K(ax,ay)=a\cdot K(x,y)$. – smh Sep 27 '18 at 20:21
• You edited the question, but still it is not the best fit for this site. Let's suppose somebody "answer" it saying: "Yes, I have." Try to explain what have you tried, the context for your problem and where are you having problems. – nicoguaro Oct 2 '18 at 2:42