Abstract
It was argued in literature that traversable wormholes can exist with an arbitrarily small violation of null energy conditions. I show that if the amount of exotic material near the wormhole throat tends to zero, either this leads to a horn instead of a wormhole or the throat approaches the horizon in such a way that infinitely large stresses develop on the throat.
- Received 10 May 2007
DOI:https://doi.org/10.1103/PhysRevD.76.044017
©2007 American Physical Society