Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Hierarchically Acting Sterile Neutrinos   We propose that a hierarchical spectrum of sterile neutrinos (eV, keV,
$10^{13-15}$ GeV) is considered to as the explanations for MiniBooNE and LSND
oscillation anomalies, dark matter, and baryon asymmetry of the universe (BAU)
respectively. The scenario can also realize the smallness of active neutrino
masses by seesaw mechanism.

15
The categories of this paper are: nucl-ex
1
The categories of this paper are: cs
29
The categories of this paper are: funct-an
33
The categories of this paper are: plasm-ph
9
The categories of this paper are: nlin
18
The categories of this paper are: econ
23
The categories of this paper are: solv-int
14
The categories of this paper are: math-ph
16
The categories of this paper are: stat
21
The categories of this paper are: adap-org
12
The categories of this paper are: nucl-th
28
The categories of this paper are: alg-geom
22
The categories of this paper are: chao-dyn
24
The categories of this paper are: dg-ga
13
The categories of this paper are: quant-ph
5
The categories of this paper are: gr-qc