Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Constraints on self-interacting Q-ball dark matter   We consider different types of Q-balls as self-interacting dark matter. For
the Q-balls to act as the dark matter of the universe they should not
evaporate, which requires them to carry very large charges; depending on the
type, the minimum charge could be as high as Q \sim 10^{33} or the Q-ball
coupling to ordinary matter as small as \sim 10^{-35}. The
cross-section-to-mass ratio needed for self-interacting dark matter implies a
mass scale of m \sim O(1) MeV for the quanta that the Q-balls consist of, which
is very difficult to achieve in the MSSM.

14
The categories of this paper are: math-ph
11
The categories of this paper are: hep-lat
19
The categories of this paper are: eess
22
The categories of this paper are: chao-dyn
5
The categories of this paper are: gr-qc
35
The categories of this paper are: mtrl-th
33
The categories of this paper are: plasm-ph
29
The categories of this paper are: funct-an
30
The categories of this paper are: q-alg
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The categories of this paper are: adap-org
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The categories of this paper are: dg-ga
9
The categories of this paper are: nlin
27
The categories of this paper are: comp-gas
8
The categories of this paper are: hep-ex
36
The categories of this paper are: cmp-lg
7
The categories of this paper are: hep-th