Towards the possibility of a selfmaintained vacuumtraversable wormhole
Abstract
We calculate the renormalised vacuum expectation values of the electromagnetic stressenergy tensor in the static sphericallysymmetrical wormhole topology. Let us suppose that the derivatives of the metric tensor over a radial distance are sufficiently small (on the scale of the radius) to ensure the validity of a quasiclassical (WKB) expansion over the derivatives. Then we find that violation of the averaged weak energy condition takes place irrespective of the detailed form of the metric. This is a necessary condition for the electromagnetic vacuum to be able to support the wormhole geometry.
 Publication:

Physics Letters B
 Pub Date:
 February 1997
 DOI:
 10.1016/S03702693(97)002906
 arXiv:
 arXiv:grqc/9612013
 Bibcode:
 1997PhLB..399..215K
 Keywords:

 General Relativity and Quantum Cosmology
 EPrint:
 8 pages, uses LaTeX