Can a wormhole supported by only small amounts of exotic matter really be traversable?

Details Can a wormhole supported by only small amounts of exotic matter really be traversable? Can a wormhole supported by only small amounts of exotic matter really be traversable?

2004-01-12

arxiv.org/abs/gr-qc/0401048v1

Phys.Rev. D68 (2003) 067502

Astronomy and Astrophysics

Astrophysics

General Relativity and Quantum Cosmology

8 pages, AMSTeX

Scientific paper

10.1103/PhysRevD.68.067502

Recent studies have shown that (a) quantum effects may be sufficient to support a wormhole throat and (b) the total amount of "exotic matter" can be made arbitrarily small. Unfortunately, using only small amounts of exotic matter may result in a wormhole that flares out too slowly to be traversable in a reasonable length of time. Combined with the Ford-Roman constraints, the wormhole may also come close to having an event horizon at the throat. This paper examines a model that overcomes these difficulties, while satisfying the usual traversability conditions. This model also confirms that the total amount of exotic matter can indeed be made arbitrarily small.

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