Big-Bang Nucleosynthesis on a bubble universe nucleated in Kerr-AdS$_5$ Black Hole
Abstract
We present the Big-Bang Nucleosynthesis (BBN) simulation with a bubble universe scenario around a rotating black hole (BH) in Kerr-AdS spacetime to explain recently updated observations of light elements such as the primordial helium abundance. In this scenario, the geometry of the 4D-early Universe is described as a vacuum bubble that undergoes quasi-de Sitter expansion in Kerr-AdS spacetime. We find that the BH mass and spin parameter, which show an anti-correlation against the total radiation, are important to resolve the anomaly. The present results provide clues to finding a connection between the observed results of light-element nucleosynthesis and the scenario of the 4D-bubble universe in AdS spacetimes.
Keywords
Cite
@article{arxiv.2408.10315,
title = {Big-Bang Nucleosynthesis on a bubble universe nucleated in Kerr-AdS$_5$ Black Hole},
author = {Akira Dohi and Issei Koga and Kazushige Ueda},
journal= {arXiv preprint arXiv:2408.10315},
year = {2025}
}
Comments
21 pages, 5 figures, accepted by PRD