Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraining the Dark 2HDM   The Dark 2HDM (called also the Inert Doublet Model) is the version of the
Two-Higgs-Doublet Model with an exact $Z_2$ symmetry. It contains the SM-like
Higgs boson $h$ and dark scalars $H$,$H^+,H^-$,$A$. Only dark scalars have odd
$Z_2$ parity and therefore the lightest of them can be a dark matter candidate.
The comparison of such model and of the standard 2HDM with an explicit $Z_2$
symmetry is given.

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The categories of this paper are: patt-sol
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
5
The categories of this paper are: gr-qc
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The categories of this paper are: acc-phys
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The categories of this paper are: nucl-ex
10
The categories of this paper are: q-bio
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The categories of this paper are: q-fin
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The categories of this paper are: solv-int
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The categories of this paper are: math-ph
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The categories of this paper are: hep-lat
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The categories of this paper are: q-alg
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The categories of this paper are: chem-ph
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The categories of this paper are: cmp-lg
9
The categories of this paper are: nlin
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The categories of this paper are: supr-con