Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Parafermionic dark mater   To discuss the possible contribution of parafermions to the dark matter
abundance, we extend the Boltzmann equation for fermionic dark matter to
include parafermions. Parafermions can accommodate $r$ particles per quantum
state $(2\le r<\infty)$, where the parafermion of order $r=1$ is identical to
the ordinary fermion. It is found that the parafermionic dark matter can be
more abundant than the fermionic dark matter in the present universe.

14
The categories of this paper are: math-ph
29
The categories of this paper are: funct-an
6
The categories of this paper are: astro-ph
36
The categories of this paper are: cmp-lg
16
The categories of this paper are: stat
3
The categories of this paper are: physics
24
The categories of this paper are: dg-ga
5
The categories of this paper are: gr-qc
10
The categories of this paper are: q-bio
26
The categories of this paper are: bayes-an
31
The categories of this paper are: ao-sci
19
The categories of this paper are: eess
27
The categories of this paper are: comp-gas
2
The categories of this paper are: math
32
The categories of this paper are: atom-ph
20
The categories of this paper are: acc-phys