Type N universal spacetimes
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OriginalversjonHervik, S., Pravda, V., Pravdova, A. (2015) Type N universal spacetimes. Journal of Physics: Conference Series (2015) 012065 10.1088/1742-6596/600/1/012065
Universal spacetimes are vacuum solutions to all theories of gravity with the Lagrangian L [...]. Well known examples of universal spacetimes are plane waves which are of the Weyl type N. Here, we discuss recent results on necessary and sufficient conditions for all Weyl type N spacetimes in arbitrary dimension and we conclude that a type N spacetime is universal if and only if it is an Einstein Kundt spacetime. We also summarize the main points of the proof of this result.
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