Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: High frequency gravitational waves from spin-3/2 fields   We point out the peculiar form of the gravitational wave signal expected from
a gas of particles carry spin 3/2 produced during preheating. Given the very
few ways that gravitinos can manifest themselves in an experimentally
observable way, we stress the importance of improving the sensitivity of
ultra-high frequency detectors in the future. This review is based on work that
appeared in [arXiv:1811.11774 [hep-ph]].

14
The categories of this paper are: math-ph
30
The categories of this paper are: q-alg
37
The categories of this paper are: supr-con
16
The categories of this paper are: stat
12
The categories of this paper are: nucl-th
24
The categories of this paper are: dg-ga
19
The categories of this paper are: eess
35
The categories of this paper are: mtrl-th
34
The categories of this paper are: chem-ph
13
The categories of this paper are: quant-ph
10
The categories of this paper are: q-bio
27
The categories of this paper are: comp-gas
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The categories of this paper are: ao-sci
3
The categories of this paper are: physics
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The categories of this paper are: nucl-ex
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The categories of this paper are: adap-org