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arXiv · 2211.05265

On primordial universe in anti-de Sitter landscape

Pu-Xin Lin·Hai-Long Huang·Jun Zhang·Yun-Song Piao
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Abstract

How the spacetime evolved non-perturbatively in a landscape with multiple anti-de Sitter (AdS) vacua, which is theoretically well-motivated, has always been a matter of concern. As a step towards this issue, we perform (3+1)D numerical relativity simulations for the inhomogeneous universe in an AdS landscape, and find that large inhomogeneity of scalar field can develop into not only sphere-like bubbles, but also novel tube-like structures. It is observed that the bubble or tube wall (across the potential barrier) likely inflates as a quasi-dS space, while the different regions separated by the walls are in different AdS vacua and will collapse towards singularity.

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Pu-Xin Lin, Hai-Long Huang, Jun Zhang, Yun-Song Piao. 2022-11-09. On primordial universe in anti-de Sitter landscape. https://doi.org/10.1016/j.physletb.2024.138768

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