Traversable wormholes from massless conformally coupled scalar fields
arXiv:gr-qc/9908029 · doi:10.1016/S0370-2693(99)01117-X
Abstract
The massless conformally coupled scalar field is characterized by the so-called "new improved stress-energy tensor", which is capable of classically violating the null energy condition. When coupled to Einstein gravity we find a three-parameter class of exact solutions. These exact solutions include the Schwarzschild geometry, assorted naked singularities, and a large class of traversable wormholes.
11 Pages, plain LaTeX2e, uses graphics.sty, three *.eps figures