Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Application of Ewald summations to long-range dispersion forces   We present results illustrating the effects of using explicit summation terms
for the $r^{-6}$ dispersion term on the interfacial properties of a
Lennard-Jones fluid and SPC/E water. For the Lennard-Jones fluid, we find that
the use of long-range summations, even with a short ``crossover radius,''
yields results that are consistent with simulations using large cutoff radii.
Simulations of SPC/E water demonstrate that the long-range dispersion forces
are of secondary importance to the Coulombic forces. In both cases, we find
that the ratio of box size $L_{\parallel}$ to crossover radius $r_{\rm
c}^{\mathbf k}$ plays an important role in determining the magnitude of the
long-range dispersion correction, although its effect is secondary when
Coulombic interactions are also present.

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The categories of this paper are: funct-an
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The categories of this paper are: math-ph
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The categories of this paper are: nucl-ex
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The categories of this paper are: econ
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The categories of this paper are: chem-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: comp-gas
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The categories of this paper are: adap-org
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The categories of this paper are: hep-lat
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The categories of this paper are: plasm-ph
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The categories of this paper are: hep-ex
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The categories of this paper are: acc-phys
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The categories of this paper are: cs
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The categories of this paper are: stat
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The categories of this paper are: hep-ph
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The categories of this paper are: q-bio