Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Extended Ewald Summation Technique   We present a technique to efficiently compute long-range interactions in
systems with periodic boundary conditions. We extend the well-known Ewald
method by using a linear combination of screening Gaussian charge distributions
instead of only one as in the standard Ewald scheme. The combined simplicity
and efficiency of our method is demonstrated, and the scheme is readily
applicable to large-scale periodic simulations, classical as well as quantum.

1
The categories of this paper are: cs
18
The categories of this paper are: econ
9
The categories of this paper are: nlin
0
The categories of this paper are: hep-ph
30
The categories of this paper are: q-alg
7
The categories of this paper are: hep-th
26
The categories of this paper are: bayes-an
6
The categories of this paper are: astro-ph
13
The categories of this paper are: quant-ph
25
The categories of this paper are: patt-sol
14
The categories of this paper are: math-ph
27
The categories of this paper are: comp-gas
4
The categories of this paper are: cond-mat
11
The categories of this paper are: hep-lat
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an