Do electromagnetic waves always propagate along null geodesics?
Author
dc.contributor.author
Asenjo, Felipe A.
Author
dc.contributor.author
Hojman Guiñerman, Sergio
Admission date
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2018-06-26T15:45:19Z
Available date
dc.date.available
2018-06-26T15:45:19Z
Publication date
dc.date.issued
2017
Cita de ítem
dc.identifier.citation
Class. Quantum Grav. 34 (2017) 205011 (12pp)
es_ES
Identifier
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10.1088/1361-6382/aa8b48
Identifier
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https://repositorio.uchile.cl/handle/2250/149247
Abstract
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We find exact solutions to Maxwell equations written in terms of fourvector potentials in non-rotating, as well as in Gdel and Kerr spacetimes. We show that Maxwell equations can be reduced to two uncoupled secondorder differential equations for combinations of the components of the four-vector potential. Exact electromagnetic waves solutions are written on given gravitational field backgrounds where they evolve. We find that in non-rotating spherical symmetric spacetimes, electromagnetic waves travel along null geodesics. However, electromagnetic waves on Gdel and Kerr spacetimes do not exhibit that behavior.