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arXiv · gr-qc/0103070

Shortcuts in the fifth dimension

Robert R. Caldwell·David Langlois
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Abstract

If our Universe is a three-brane embedded in a five-dimensional anti-deSitter spacetime, in which matter is confined to the brane and gravity inhabits an infinite bulk space, then the causal propagation of luminous and gravitational signals is in general different. A gravitational signal traveling between two points on the brane can take a ``shortcut'' through the bulk, and appear quicker than a photon traveling between the same two points along a geodesic on the brane. Similarly, in a given time interval, a gravitational signal can propagate farther than a luminous signal. We quantify this effect, and analyze the impact of these shortcuts through the fifth dimension on cosmology.

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Robert R. Caldwell, David Langlois. 2001-03-19. Shortcuts in the fifth dimension. https://doi.org/10.1016/s0370-2693(01)00631-1

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