Quantum Global Structure of de Sitter Space

Details Quantum Global Structure of de Sitter Space Quantum Global Structure of de Sitter Space

1999-02-25

arxiv.org/abs/hep-th/9902183v2

Phys.Rev. D60 (1999) 063503

Physics

High Energy Physics

High Energy Physics - Theory

37 pages, LaTeX2e, 10 figures. v2: references added

Scientific paper

10.1103/PhysRevD.60.063503

I study the global structure of de Sitter space in the semi-classical and one-loop approximations to quantum gravity. The creation and evaporation of neutral black holes causes the fragmentation of de Sitter space into disconnected daughter universes. If the black holes are stabilized by a charge, I find that the decay leads to a necklace of de Sitter universes (`beads') joined by near-extremal black hole throats. For sufficient charge, more and more beads keep forming on the necklace, so that an unbounded number of universes will be produced. In any case, future infinity will not be connected. This may have implications for a holographic description of quantum gravity in de Sitter space.

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