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arXiv · 0912.4082

Transdimensional Tunneling in the Multiverse

Jose J. Blanco-Pillado·Delia Schwartz-Perlov·Alexander Vilenkin
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Abstract

Topology-changing transitions between vacua of different effective dimensionality are studied in the context of a 6-dimensional Einstein-Maxwell theory. The landscape of this theory includes a $6d$ de Sitter vacuum ($dS_6$), a number of $dS_4 \times S_2$ and $AdS_4 \times S_2$ vacua, and a number of $AdS_2 \times S_4$ vacua. We find that compactification transitions $dS_6 \to AdS_2 \times S_4$ occur through the nucleation of electrically charged black hole pairs, and transitions from $dS_6$ to $dS_4 \times S_2$ and $AdS_4 \times S_2$ occur through the nucleation of magnetically charged spherical black branes. We identify the appropriate instantons and describe the spacetime structure resulting from brane nucleation.

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Jose J. Blanco-Pillado, Delia Schwartz-Perlov, Alexander Vilenkin. 2009-12-21. Transdimensional Tunneling in the Multiverse. https://doi.org/10.1088/1475-7516/2010/05/005

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