Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Photon directional profile from stimulated decay of axion clouds with
  arbitrary momentum distributions   We model clusters of axions with spherically symmetric spacial but arbitrary
momentum distributions and study the directional profile of photos produced in
their evolution through spontaneous and stimulated decay of axions via the
process a --> gamma + gamma. Several specific examples are presented.

1
The categories of this paper are: cs
35
The categories of this paper are: mtrl-th
21
The categories of this paper are: adap-org
33
The categories of this paper are: plasm-ph
18
The categories of this paper are: econ
29
The categories of this paper are: funct-an
10
The categories of this paper are: q-bio
20
The categories of this paper are: acc-phys
12
The categories of this paper are: nucl-th
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The categories of this paper are: nlin
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
17
The categories of this paper are: q-fin
13
The categories of this paper are: quant-ph
8
The categories of this paper are: hep-ex
32
The categories of this paper are: atom-ph