Orbifold Physics and de Sitter Spacetime

Details Orbifold Physics and de Sitter Spacetime Orbifold Physics and de Sitter Spacetime

2003-11-07

arxiv.org/abs/hep-th/0311055v3

Nucl.Phys.B692:270-300,2004

Physics

High Energy Physics

High Energy Physics - Theory

Introduction re-written to explain our attitude to the use of Anti-de Sitter spacetime. 33 pages, 5 diagrams, Nuclear Physics

Scientific paper

10.1016/j.nuclphysb.2004.05.019

It is generally believed the way to resolve the black hole information paradox in string theory is to embed the black hole in anti-deSitter spacetime -- without of course claiming that Schwarzschild-AdS is a realistic spacetime. Here we propose that, similarly, the best way to study topologically non-trivial versions of de Sitter spacetime from a stringy point of view is to embed them in an anti-de Sitter orbifold bulk, again without claiming that this is literally how de Sitter arises in string theory. Our results indicate that string theory may rule out the more complex spacetime topologies which are compatible with local de Sitter geometry, while still allowing the simplest versions.

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