Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Comment to "Multipolar expansion of the electrostatic interaction
  between charged colloids at interfaces"   We present a comment to a recent paper by Dominguez et. al. They claimed that
the electrostatic interaction between charged colloids trapped at an interface
formed by a dielectric and a screening phase is always isotropic to order
$d^-3$. Base on this result, they claimed that in-plane dipolar attraction of
order $d^-3$ between colloids cannot exist, in contrast to previous proposals.
We point out that their analysis is not completed and anisotropic (dipolar)
interaction between colloids can exist up to order $d^-3$.

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The categories of this paper are: chem-ph
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The categories of this paper are: q-bio
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The categories of this paper are: patt-sol
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The categories of this paper are: adap-org
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The categories of this paper are: funct-an
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The categories of this paper are: nlin
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The categories of this paper are: q-alg
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The categories of this paper are: astro-ph
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The categories of this paper are: alg-geom
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The categories of this paper are: quant-ph
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The categories of this paper are: ao-sci
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The categories of this paper are: hep-ph
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The categories of this paper are: physics
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The categories of this paper are: hep-ex
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The categories of this paper are: math
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The categories of this paper are: hep-lat