Abstract
Assuming that spacetime tunnels—wormholes and ringholes—naturally exist in the Universe, we investigate the conditions making them embeddible in Friedmann space, and the possible observable effects of these tunnels, including lensing and frequency shifting of emitting sources, discontinuous change of background temperature, broadening and intensity enhancement of spectral lines, as well as a dramatic increase of the luminosity of any object at the tunnel’s throat.
- Received 19 March 1997
DOI:https://doi.org/10.1103/PhysRevD.56.6293
©1997 American Physical Society
