Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Spacelike deformations: Higher-helicity fields from scalar fields   In contrast to Hamiltonian perturbation theory which changes the time
evolution, "spacelike deformations" proceed by changing the translations
(momentum operators). The free Maxwell theory is only the first member of an
infinite family of spacelike deformations of the complex massless Klein-Gordon
quantum field into fields of higher helicity. A similar but simpler instance of
spacelike deformation allows to increase the mass of scalar fields.

16
The categories of this paper are: stat
3
The categories of this paper are: physics
1
The categories of this paper are: cs
32
The categories of this paper are: atom-ph
30
The categories of this paper are: q-alg
34
The categories of this paper are: chem-ph
6
The categories of this paper are: astro-ph
5
The categories of this paper are: gr-qc
36
The categories of this paper are: cmp-lg
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
8
The categories of this paper are: hep-ex
13
The categories of this paper are: quant-ph
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The categories of this paper are: nlin
4
The categories of this paper are: cond-mat