Rotating traversable wormholes in Einstein-Maxwell theory
It is well-known that traversable wormhole solutions to the Einstein equations require the existence of an exotic matter source violating the null energy condition. An apparent exception is the overcharged Kerr-Newman-NUT solution of the Einstein-Maxwell equations, which has all the properties of a...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Physics Letters B |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0370269323000114 |
| _version_ | 1797905310554259456 |
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| author | Gérard Clément Dmitri Gal'tsov |
| author_facet | Gérard Clément Dmitri Gal'tsov |
| author_sort | Gérard Clément |
| collection | DOAJ |
| description | It is well-known that traversable wormhole solutions to the Einstein equations require the existence of an exotic matter source violating the null energy condition. An apparent exception is the overcharged Kerr-Newman-NUT solution of the Einstein-Maxwell equations, which has all the properties of a geodesically complete, traversable wormhole spacetime. We show that the exotic matter sourcing this consists in two counter-rotating tensionless straight cosmic strings — the Misner-Dirac strings — which, as expected, violate the null energy condition. The wormhole possesses an ergoregion, but no superradiance. The geodesic motion in this spacetime is briefly discussed, and the absence of closed circular null geodesics is demonstrated. |
| first_indexed | 2024-04-10T10:04:16Z |
| format | Article |
| id | doaj.art-2b5d48df73a8489a81584ec30827fde5 |
| institution | Directory Open Access Journal |
| issn | 0370-2693 |
| language | English |
| last_indexed | 2024-04-10T10:04:16Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Physics Letters B |
| spelling | doaj.art-2b5d48df73a8489a81584ec30827fde52023-02-16T04:17:31ZengElsevierPhysics Letters B0370-26932023-03-01838137677Rotating traversable wormholes in Einstein-Maxwell theoryGérard Clément0Dmitri Gal'tsov1LAPTh, Université Savoie Mont Blanc, CNRS, 9 chemin de Bellevue, BP 110, F-74941 Annecy-le-Vieux cedex, France; Corresponding author.Faculty of Physics, Moscow State University, 119899, Moscow, Russia; Kazan Federal University, 420008 Kazan, RussiaIt is well-known that traversable wormhole solutions to the Einstein equations require the existence of an exotic matter source violating the null energy condition. An apparent exception is the overcharged Kerr-Newman-NUT solution of the Einstein-Maxwell equations, which has all the properties of a geodesically complete, traversable wormhole spacetime. We show that the exotic matter sourcing this consists in two counter-rotating tensionless straight cosmic strings — the Misner-Dirac strings — which, as expected, violate the null energy condition. The wormhole possesses an ergoregion, but no superradiance. The geodesic motion in this spacetime is briefly discussed, and the absence of closed circular null geodesics is demonstrated.http://www.sciencedirect.com/science/article/pii/S0370269323000114 |
| spellingShingle | Gérard Clément Dmitri Gal'tsov Rotating traversable wormholes in Einstein-Maxwell theory Physics Letters B |
| title | Rotating traversable wormholes in Einstein-Maxwell theory |
| title_full | Rotating traversable wormholes in Einstein-Maxwell theory |
| title_fullStr | Rotating traversable wormholes in Einstein-Maxwell theory |
| title_full_unstemmed | Rotating traversable wormholes in Einstein-Maxwell theory |
| title_short | Rotating traversable wormholes in Einstein-Maxwell theory |
| title_sort | rotating traversable wormholes in einstein maxwell theory |
| url | http://www.sciencedirect.com/science/article/pii/S0370269323000114 |
| work_keys_str_mv | AT gerardclement rotatingtraversablewormholesineinsteinmaxwelltheory AT dmitrigaltsov rotatingtraversablewormholesineinsteinmaxwelltheory |