Stress-energy of a quantized scalar field in static wormhole spacetimes
  Static traversable wormhole solutions of the Einstein equations require ``exotic'' matter which violates the weak energy condition. The vacuum stress-energy of quantized fields has been proposed as the source for this matter. Using the Dewitt-Schwinger approximation, analytic expressions for the stress-energy of a quantized massive scalar field are calculated in five static spherically symmetric Lorentzian wormhole spacetimes. We find that in all cases, for both minimally and conformally coupled scalar fields, the stress-energy does not have the properties needed to support the wormhole geometry. 
Brett E. Taylor (1), William A. Hiscock (1), and Paul R. Anderson (2)   ((1) Montana State University, Bozeman, (2) Wake For...