Exact hypergeometric Green's functions yield closed-form linearized metric perturbations from quadrupolar sources in power-law cosmologies.
Gravitational wave memory in de Sitter spacetime
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abstract
We examine gravitational wave memory in the case where sources and detector are in an expanding cosmology. For simplicity, we treat the case where the cosmology is de Sitter spacetime, and discuss the possibility of generalizing our results to the case of a more realistic cosmology. We find results very similar to those of gravitational wave memory in an asymptotically flat spacetime, but with the magnitude of the effect multiplied by a redshift factor.
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gr-qc 1years
2026 1verdicts
UNVERDICTED 1representative citing papers
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Cosmological perturbation theory of primordial compact sources
Exact hypergeometric Green's functions yield closed-form linearized metric perturbations from quadrupolar sources in power-law cosmologies.