Construction of a complex null tetrad
ID: construction-of-a-complex-null-tetrad
In the context of general relativity and the study of spacetime, a null tetrad is a mathematical construct used to facilitate the analysis of light rays and the behavior of null (light-like) geodesics. A null tetrad consists of four vectors, typically denoted as \( l^\mu, n^\mu, m^\mu, \) and \( \bar{m}^\mu \), which satisfy certain orthogonality and normalization conditions.
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