Pauli–Lubanski pseudovector
Operator in quantum field theory / From Wikipedia, the free encyclopedia
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For the notation, see Ricci calculus.
In physics, the Pauli–Lubanski pseudovector is an operator defined from the momentum and angular momentum, used in the quantum-relativistic description of angular momentum. It is named after Wolfgang Pauli and Józef Lubański,[1]
It describes the spin states of moving particles.[2] It is the generator of the little group of the Poincaré group, that is the maximal subgroup (with four generators) leaving the eigenvalues of the four-momentum vector Pμ invariant.[3]