Big Bangs and Bounces on the Brane
A.J.M. Medved (University of Alberta)

TL;DR
This paper explores how brane-world scenarios with black holes in higher dimensions can lead to cosmological models featuring bounces or big bang/crunch events, offering insights into quantum gravity and universe evolution.
Contribution
It demonstrates that bulk black holes induce different cosmological evolutions on the brane, revealing a critical mass threshold and providing a holographic interpretation.
Findings
Black hole mass determines universe type (bounce or big bang/crunch).
Critical mass is non-zero only for spherical horizons.
Holographic interpretation links bulk black holes to brane cosmology.
Abstract
In view of our accelerating universe, one of the outstanding theoretical issues is the absence of a quantum-gravitational description of de Sitter space. Although speculative, an intriguing circumvention may be found in the realm of brane-world scenarios; where the physical universe can be interpreted as a non-critical 3-brane moving in a higher-dimensional, static bulk. In this paper, we focus on the cosmological implications of a positively curved brane world evolving in the background of a ``topological'' anti-de Sitter black hole (i.e, Schwarzschild-like but with an arbitrary horizon topology). We show that the bulk black hole will typically induce either an asymptotically de Sitter ``bounce'' universe or a big bang/big crunch FRW universe, depending on a critical value of mass. Interestingly, the critical mass is only non-vanishing in the case of a spherical horizon geometry. We go…
Peer Reviews
No public reviews on file for this paper yet. If you reviewed it on a platform where reviews are public (OpenReview, ICLR, NeurIPS, ICML), you can paste yours below so the community can read it here.
Videos
No videos yet. Explain this paper in a talk, walkthrough, or lecture? Add one.
Taxonomy
TopicsBlack Holes and Theoretical Physics · Cosmology and Gravitation Theories · Galaxies: Formation, Evolution, Phenomena
