Instruct: Identify the main and secondary category of Arxiv papers based on the titles and abstracts
Query: Gravitational Waves from Compact Sources in de Sitter Background   The concordance model of cosmology favours a universe with a tiny positive
cosmological constant. A tiniest positive constant curvature, profoundly alters
the asymptotic structure, forcing a re-look at a theory of gravitational
radiation. Even for compact astrophysical sources, the intuition from Minkowski
background is challenged at every step. Nevertheless, at least for candidate
sources such as compact binaries, it is possible to quantify influence of the
cosmological constant, as small corrections to the leading order Minkowski
background results. Employing suitably chosen Fermi normal coordinates in the
static patch of the de Sitter background, we compute the field due to a compact
source to first order in $\Lambda$. For contrast, we also present the field in
the Poincare patch where the leading correction is in $\sqrt{\Lambda}$. We
introduce a gauge invariant quantity, {\em deviation scalar}, containing
polarization information and compute it in both charts for a comparison.

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The categories of this paper are: atom-ph
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The categories of this paper are: funct-an
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The categories of this paper are: physics
6
The categories of this paper are: astro-ph
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The categories of this paper are: solv-int
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The categories of this paper are: comp-gas
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The categories of this paper are: chem-ph
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The categories of this paper are: econ
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The categories of this paper are: adap-org
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The categories of this paper are: ao-sci
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The categories of this paper are: nucl-ex
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The categories of this paper are: stat
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The categories of this paper are: nlin
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The categories of this paper are: supr-con
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The categories of this paper are: dg-ga
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The categories of this paper are: math-ph