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Are Einstein-Dirac-Maxwell wormholes traversable?
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Einstein-Dirac-Maxwell wormholes are asymptotically flat static wormhole solutions in general relativity that do not make use of exotic matter. The asymmetric static solutions are smooth, are regular everywhere, and violate the null energy condition, which suggests that they are traversable. To determine if in fact they are traversable, we numerically evolve the static solutions forward in time. In all cases considered, our simulations indicate that black holes form that are connected by the wormhole. Although there exist null geodesics that travel through the wormhole, we find that they are trapped inside a black hole and are unable to travel arbitrarily far away. We conclude that Einstein-Dirac-Maxwell wormholes are not traversable.
Forward citations
Cited by 2 Pith papers
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Multishell Dirac fermions in the Einstein-Dirac system
Multishell solutions of the spherically symmetric Einstein-Dirac system are constructed for 2, 6, 12, and 20 fermions.
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Dynamical evolution and stability of quantum corrected Schwarzschild black holes in semiclassical gravity
The static quantum corrected Schwarzschild wormhole is dynamically unstable: it expands in vacuum and collapses into an evaporating black hole when a small amount of matter is present.
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