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- W4386114363 abstract "It has been known that the propagation of sound in fluids can be used to model acoustic spacetimes. These acoustic spacetimes offer analogue models for gravity. We use the Raychaudhuri equation to study the propagation of sound in these fluids, which, via the Eikonal approximation, correspond to null geodesic congruences in the acoustic spacetimes. We explore this within the acoustic analogues of black holes and cosmological spacetimes. The robustness of the Raychaudhuri equation and the limits of the acoustic analogue are emphasised." @default.
- W4386114363 created "2023-08-24" @default.
- W4386114363 creator A5045710624 @default.
- W4386114363 date "2023-08-17" @default.
- W4386114363 modified "2023-09-27" @default.
- W4386114363 title "Geodesic congruences in acoustic spacetimes and the role of Raychaudhuri equation" @default.
- W4386114363 doi "https://doi.org/10.48550/arxiv.2308.11535" @default.
- W4386114363 hasPublicationYear "2023" @default.
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