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The velocity and angular momentum of a free Dirac electron

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arxiv physics/9804024 v1 pith:5VVIJPAS submitted 1998-04-22 physics.gen-ph

The velocity and angular momentum of a free Dirac electron

classification physics.gen-ph
keywords angularcommutesdiracelectronfreehamiltonianmomentummotion
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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It is shown that, in Dirac theory, there is a spatial velocity of a free electron which commutes with the Hamiltonian, so it is a conserved quantity of the motion. Furthermore, there is a spatial orbital angular momentum which also commutes with the Hamiltonian and is a constant of the motion.

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