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Towards traversable wormholes from force-free plasmas

Iqbal, Nabil; Ross, Simon F.

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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.


Iqbal, N., & Ross, S. F. (2022). Towards traversable wormholes from force-free plasmas. SciPost Physics, 12(3), Article 086.

Journal Article Type Article
Acceptance Date Feb 4, 2022
Online Publication Date Mar 9, 2022
Publication Date 2022-03
Deposit Date Apr 22, 2022
Publicly Available Date Apr 22, 2022
Journal SciPost Physics.
Print ISSN 2542-4653
Publisher SciPost
Peer Reviewed Peer Reviewed
Volume 12
Issue 3
Article Number 086


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