Nonlinear gravitational waves and their polarization
classification
🌀 gr-qc
keywords
gravitationalnonlinearwavesfieldspolarizationabelianalgebraanalyzed
read the original abstract
Vacuum gravitational fields invariant for a non Abelian Lie algebra generated by two Killing fields whose commutator is light-like are analyzed. It is shown that they represent nonlinear gravitational waves obeying to two nonlinear superposition laws. The energy and the polarization of this family of waves are explicitely evaluated.
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