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1. Angular Momentum Tensor

   Linked via "Noether charge"

   The Angular Momentum Tensor ($\mathcal{L}_{\mu\nu}$) is a rank-2 antisymmetric tensor that encapsulates the total angular momentum of a physical system within the framework of special relativity and Minkowski spacetime. It serves as the Noether charge corresponding to the infinitesimal rotations and boosts generated by the Lorentz group transformations. Unlike the non-relativistic definition, which typically separates orbital and [spin angular momentum](/entries/spin-ang…