Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Primordial Gravitational Waves from Galaxy Intrinsic Alignments   Galaxy shapes have been observed to align with external tidal fields
generated by the large-scale structures of the Universe. While the main source
for these tidal fields is provided by long-wavelength density perturbations,
tensor perturbations also contribute with a non-vanishing amplitude at linear
order. We show that parity-breaking gravitational waves produced during
inflation leave a distinctive imprint in the galaxy shape power spectrum which
is not hampered by any scalar-induced tidal field. We also show that a certain
class of tensor non-Gaussianities produced during inflation can leave a
signature in the density-weighted galaxy shape power spectrum. We estimate the
possibility of observing such imprints in future galaxy surveys.

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The categories of this paper are: math
37
The categories of this paper are: supr-con
36
The categories of this paper are: cmp-lg
18
The categories of this paper are: econ
0
The categories of this paper are: hep-ph
22
The categories of this paper are: chao-dyn
27
The categories of this paper are: comp-gas
10
The categories of this paper are: q-bio
21
The categories of this paper are: adap-org
30
The categories of this paper are: q-alg
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The categories of this paper are: eess
9
The categories of this paper are: nlin
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The categories of this paper are: hep-ex
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The categories of this paper are: hep-lat
24
The categories of this paper are: dg-ga
32
The categories of this paper are: atom-ph