Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Bose-Einstein Condensates in Charged Black-Hole Spacetimes   We analyze Bose-Einstein condensates on three types of spherically symmetric
and static charged black-hole spacetimes: The Reissner-Nordstr\"om spacetime,
Hoffmann's Born-Infeld black-hole spacetime, and the regular
Ay\'on-Beato-Garc\'ia spacetime. The Bose-Einstein condensate is modeled in
terms of a massive scalar field that satisfies a Klein-Gordon equation with a
self-interaction term. The scalar field is assumed to be uncharged and not
self-gravitating. If the mass parameter of the scalar field is chosen
sufficiently small, there are quasi-bound states of the scalar field that may
be interpreted as dark matter clouds. We estimate the size and the total energy
of such clouds around charged supermassive black holes and we investigate if
their observable features can be used for discriminating between the different
types of charged black holes.

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The categories of this paper are: atom-ph
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The categories of this paper are: stat
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The categories of this paper are: ao-sci
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The categories of this paper are: cmp-lg
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The categories of this paper are: q-bio
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The categories of this paper are: physics
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The categories of this paper are: solv-int
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The categories of this paper are: quant-ph
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The categories of this paper are: cond-mat
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The categories of this paper are: chem-ph
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The categories of this paper are: bayes-an
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The categories of this paper are: patt-sol
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The categories of this paper are: hep-lat
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The categories of this paper are: eess
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The categories of this paper are: comp-gas
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The categories of this paper are: hep-th