Generalizations of pp-wave spacetimes in higher dimensions
classification
🌀 gr-qc
hep-th
keywords
spacetimesdimensionaldimensionsgeneralizationshigherpp-wavebackgroundsbeen
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We shall investigate $D$-dimensional Lorentzian spacetimes in which all of the scalar invariants constructed from the Riemann tensor and its covariant derivatives are zero. These spacetimes are higher-dimensional generalizations of $D$-dimensional pp-wave spacetimes, which have been of interest recently in the context of string theory in curved backgrounds in higher dimensions.
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