Transdimensional Tunneling in the Multiverse

Details Transdimensional Tunneling in the Multiverse Transdimensional Tunneling in the Multiverse

2009-12-21

arxiv.org/abs/0912.4082v2

JCAP 1005:005,2010

Physics

High Energy Physics

High Energy Physics - Theory

32 pages, 15 figures New references added

Scientific paper

10.1088/1475-7516/2010/05/005

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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