Towards traversable wormholes from force-free plasmas
Nabil Iqbal, Simon F. Ross
SciPost Phys. 12, 086 (2022) · published 9 March 2022
- doi: 10.21468/SciPostPhys.12.3.086
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Abstract
The near-horizon region of magnetically charged black holes can have very strong magnetic fields. A useful low-energy effective theory for fluctuations of the fields, coupled to electrically charged particles, is force-free electrodynamics. The low energy collective excitations include a large number of Alfven wave modes, which have a massless dispersion relation along the field worldlines. We attempt to construct traversable wormhole solutions using the negative Casimir energy of the Alfven wave modes, analogously to the recent construction using charged massless fermions. The behaviour of massless scalars in the near-horizon region implies that the size of the wormholes is strongly restricted and cannot be made large, even though the force free description is valid in a larger regime.
Cited by 3
Authors / Affiliation: mappings to Contributors and Organizations
See all Organizations.- 1 Nabil Iqbal,
- 1 Simon Ross