Vacuum polarization of a massive scalar field in a wormhole spacetime

preprint2010arXivOpen access

Abstract

We calculate the vacuum average value of the field square and the stress-energy tensor of a massive scalar field, with non-minimal coupling ξξ to the curvature in the short-throat flat-space wormhole background. The obtained results are not suitable for an analytical analysis and for this reason we provide a numerical analysis for different values of the coupling constant, ξξ. It was shown that the vacuum polarization cannot self-consistently support the wormhole. Otherwise, the energy-momentum tensor does not violate the null energy condition near the throat.

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