Rotating thin-shell wormhole from glued Kerr spacetimes
P.E. Kashargin, S.V. Sushkov
TL;DR
This paper constructs a rotating thin-shell wormhole by gluing two Kerr spacetimes, analyzing the matter needed at the throat, and finding that anisotropic fluids with negative energy density can support such structures.
Contribution
It introduces a novel model of a rotating thin-shell wormhole from Kerr spacetimes and investigates the exotic matter requirements for its stability.
Findings
Perfect fluid cannot support the wormhole.
Anisotropic fluid with negative energy density can support the wormhole.
The model provides insights into exotic matter conditions for rotating wormholes.
Abstract
We construct a model of a rotating wormhole made by cutting and pasting two Kerr spacetimes. As a result, we obtain a rotating thin-shell wormhole with exotic matter at the throat. Two candidates for the exotic matter are considered: (i) a perfect fluid; (ii) an anisotropic fluid. We show that a perfect fluid is unable to support a rotating thin-shall wormhole. On the contrary, the anisotropic fluid with the negative energy density can be a source for such a geometry.
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