Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Self-Interacting Dark Matter   Spergel and Steinhardt have recently proposed the concept of dark matter with
strong self-interactions as a means to address numerous discrepancies between
observations of dark matter halos on subgalactic scales and the predictions of
the standard collisionless dark matter picture. We review the motivations for
this scenario and discuss some recent, successful numerical tests. We also
discuss the possibility that the dark matter interacts strongly with ordinary
baryonic matter, as well as with itself. We present a new analysis of the
experimental constraints and re-evaluate the allowed range of cross-section and
mass.

17
The categories of this paper are: q-fin
21
The categories of this paper are: adap-org
13
The categories of this paper are: quant-ph
26
The categories of this paper are: bayes-an
19
The categories of this paper are: eess
9
The categories of this paper are: nlin
29
The categories of this paper are: funct-an
2
The categories of this paper are: math
0
The categories of this paper are: hep-ph
10
The categories of this paper are: q-bio
28
The categories of this paper are: alg-geom
3
The categories of this paper are: physics
5
The categories of this paper are: gr-qc
1
The categories of this paper are: cs
18
The categories of this paper are: econ
37
The categories of this paper are: supr-con