A Positive Cosmological Constant in String Theory Through Ads/CFT Wormholes

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dc.creatorMcInnes, Brett
dc.date2001-05-16
dc.date2001-06-21
dc.date.accessioned2026-07-07T11:47:57Z
dc.date.available2026-07-07T11:47:57Z
dc.descriptionThere are two important examples of physical systems which violate the strong energy condition : Universes (like, it would seem, our own) with a positive cosmological constant, and wormholes. We suggest that a positive cosmological constant can be reconciled with string theory by considering wormholes in string backgrounds. This is argued in two directions : first, we show that brane-worlds with positive cosmological constants give rise to bulk singularities which are best resolved by embedding the brane-world in an AdS/CFT wormhole; and second, for the simplest kind of wormhole in an asymptotically AdS space, we show that the IR stability of the matter needed to keep the wormhole open requires the presence of a brane-world. UV stability conditions then forbid a negative cosmological constant on the brane-world.
dc.description21 pages, references added, clarification of claim that string theory on a wormhole background requires a positive observed cosmological constant; NPB version
dc.identifierhttps://arxiv.org/abs/hep-th/0105151
dc.identifierhttp://arxiv.org/abs/hep-th/0105151
dc.identifierNucl.Phys.B609:325-343,2001
dc.identifierdoi:10.1016/S0550-3213(01)00295-4
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/202758
dc.subjectHigh Energy Physics - Theory
dc.subjectGeneral Relativity and Quantum Cosmology
dc.titleA Positive Cosmological Constant in String Theory Through Ads/CFT Wormholes
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