Title
What Matter Can Sustain A Wormhole?: Quantized Massive Spin 1/2 Fields on Static Spherically Symmetric Wormhole Spacetimes,Used
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Traversable wormholes have become a subject of intensive studies since 1988 when Morris and Thorne published their paper which put forward the energy conditions for traversable wormholes. A number of researchers have calculated the stressenergy tensors of different fields but failed to find one that meets the requirement of the wormhole geometry. Some others find different schemes to sustain traversable wormholes but either on the Planck scale or hypothetically on a macroscopic scale. Groves has developed a method to compute the renormalized stressenergy tensor for a quantized massive spin 1/2 field in a general static spherically symmetric spacetime. Using this method, I have computed the renormalized stressenergy tensors of two quantized massive spin 1/2 fields in four static spherically symmetric wormhole spacetimes. The results of my calculation suggest that these two fields can be considered exotic and thus can sustain wormhole geometries. However, the wormholes that they sustain are microscopic and are not traversable for human beings.
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