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Traversable wormholes - tmazanec1 - 03-10-2021
Traversable Wormholes in Einstein-Dirac-Maxwell Theory
https://journals.aps.org/prl/abstract/10.1103/PhysRevLett.126.101102
We construct a specific example of a class of traversable wormholes in Einstein-Dirac-Maxwell theory in four spacetime dimensions, without needing any form of exotic matter. Restricting to a model with two massive fermions in a singlet spinor state, we show the existence of spherically symmetric asymptotically flat configurations which are free of singularities, representing localized states. These solutions satisfy a generalized Smarr relation, being connected with the extremal Reissner-Nordström black holes. They also possess a finite mass M and electric charge Qe, with Qe/M>1. An exact wormhole solution with ungauged, massless fermions is also reported.
Jose Luis Blázquez-Salcedo, Christian Knoll, and Eugen Radu
Phys. Rev. Lett. 126, 101102 – Published 9 March 2021