Importance To Wormhole Theory
If a ring singularity forms, and is traversable, it may hypothetically connect either two different universes, or two distant parts of the same universe. The path through the ring technically counts as a special class of wormhole. It has been suggested that with two widely separated Kerr singularities, it is geometrically allowable that the rings could cross-connect, such that a traveler could enter one ring and exit the other. This would then count as a class of singularity-bounded planar wormhole. It is not obvious how one would go about constructing such a cross-connection. One solution may be to create two identical ring singularities, with identical mass, charge and angular momentum, identically (although not necessarily simultaneously). Theoretically the wormholes inside both ring singularities will be identical, i.e. the same point in timespace.
A singularity-bounded wormhole is of interest because it bypasses the usual assumption that a wormhole needs exotic matter producing a repulsive gravitational field to keep the wormhole throat open—in this case, the planar wormhole mouths only require an outward gravitational field in two dimensions (rather than three), and this is produced in effect by the outward-pointing Coriolis field produced by the spinning mass (or by the "spinning" universe, depending on our rotational frame of reference).
Read more about this topic: Ring Singularity
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