Table of Contents
Universe, Volume 4, Issue 12 (December 2018)
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Cover Story (view full-size image) Wormholes are shortcuts connecting two regions of spacetime that would otherwise be distant. We [...] Read more. Wormholes are shortcuts connecting two regions of spacetime that would otherwise be distant. We have not found any in the universe, but we know that their existence is in principle allowed by Einstein’s General Relativity theory for peculiar spacetime geometries. We show that it is possible to build up a laboratory system with the same spatial shape as a spacetime containing a wormhole, and we study how light propagates along it. In particular, we see how the speed of light changes as it traverses the throat of the wormhole. The experiment that we propose can be realized with current technology. View Paper here.