Vanishing Scalar Invariant Spacetimes in Higher Dimensions
A. Coley, R. Milson, V. Pravda, A. Pravdova
Abstract
We study manifolds with Lorentzian signature and prove that all scalar curvature invariants of all orders vanish in a higher-dimensional Lorentzian spacetime if and only if there exists an aligned non-expanding, non-twisting, geodesic null direction along which the Riemann tensor has negative boost order.
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