Physics – High Energy Physics – High Energy Physics - Theory
Scientific paper
2001-05-16
Nucl.Phys.B609:325-343,2001
Physics
High Energy Physics
High Energy Physics - Theory
21 pages, references added, clarification of claim that string theory on a wormhole background requires a positive observed co
Scientific paper
10.1016/S0550-3213(01)00295-4
There 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.
No associations
LandOfFree
A Positive Cosmological Constant in String Theory Through Ads/CFT Wormholes does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with A Positive Cosmological Constant in String Theory Through Ads/CFT Wormholes, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and A Positive Cosmological Constant in String Theory Through Ads/CFT Wormholes will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-150914