ydoaPs Posted May 21, 2014 Posted May 21, 2014 We've known since 2005 that Einstein-Rosen Bridges (also known as 'Wormholes') can generate a Casimir effect. In a new paper, it has been shown that if the throat of a wormhole is sufficiently longer than its mouth is wide, then the Casimir effect is strong enough to keep the bridge open without the need of exotic matter. This means that the real hurdle in engineering traversable wormholes is just making one in the first place. The extreme energy requirement has, just as with warp drives, just been reduced by orders of magnitude. The new paper, again, can be read on arxiv.
IM Egdall Posted June 1, 2014 Posted June 1, 2014 The new paper cited said "the throat closes slowly enough that its central region can be safely transmitted by a pulse of light." So maybe with a long enough wormhole, we could send a signal of some kind through it. Where do we find such elongated wormholes? And if we send this signal, will we get one back from beings in some other part of our universe, or from some other universe? Is fun to speculate. How this might helps with warp drive I have no idea.
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