Document Type
Article
Publication Date
7-5-2001
Publication Title
Physics Letters, B
Department
Department of Physics and Astronomy
Abstract
If our Universe is a three-brane embedded in a five-dimensional anti-de Sitter 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.
DOI
10.1016/S0370-2693(01)00631-1
Dartmouth Digital Commons Citation
Caldwell, Robert and Langlois, David, "Shortcuts in the Fifth Dimension" (2001). Dartmouth Scholarship. 2030.
https://digitalcommons.dartmouth.edu/facoa/2030
