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Physical Decomposition of Photon Angular Momentum

We address the problem of angular momentum decomposition of a free photon. We propose a natural and physical scheme for separating the total angular momentum operator for a free photon into an orbital part and a spin part with the hope that it solves this long-standing problem and it could provide a natural basis for further study of the problem of angular momentum decomposition of a gauge field system.

preprint2014arXivOpen access
Wei-Min Sun
hep-phquant-ph
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Wei-Min Sun

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