Perfect-fluid or axion matter on an end-of-the-world brane inside an AdS black hole removes a Euclidean self-intersection obstruction that pure-tension branes suffer in the approximately local regime.
Cosmologies inside hyperbolic black holes
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abstract
Models with closed FRW cosmologies on the worldvolume of a constant-tension brane inside a black hole provide an interesting setup for studying cosmology holographically. However, in more than two worldvolume dimensions, there are limitations on such models with flat spatial slices. I show that these limitations can be avoided by considering instead hyperbolic slices. This also naturally makes contact with previous work on Euclidean wormholes.
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Cosmology inside a black hole: adding matter on the brane
Perfect-fluid or axion matter on an end-of-the-world brane inside an AdS black hole removes a Euclidean self-intersection obstruction that pure-tension branes suffer in the approximately local regime.