Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Vacuum Cherenkov Radiation for Lorentz-Violating Fermions   The current article reviews results on vacuum Cherenkov radiation obtained
for modified fermions. Two classes of processes can occur that have completely
distinct characteristics. The first one does not include a spin flip of the
radiating fermion, whereas the second one does. A r\'{e}sum\'{e} will be given
of the decay rates for these processes and their properties.

12
The categories of this paper are: nucl-th
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The categories of this paper are: stat
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The categories of this paper are: q-fin
23
The categories of this paper are: solv-int
5
The categories of this paper are: gr-qc
28
The categories of this paper are: alg-geom
32
The categories of this paper are: atom-ph
33
The categories of this paper are: plasm-ph
1
The categories of this paper are: cs
9
The categories of this paper are: nlin
11
The categories of this paper are: hep-lat
29
The categories of this paper are: funct-an
3
The categories of this paper are: physics
6
The categories of this paper are: astro-ph
8
The categories of this paper are: hep-ex
10
The categories of this paper are: q-bio