# Quantum field theory for spin operator of the photon

@inproceedings{Yang2020QuantumFT, title={Quantum field theory for spin operator of the photon}, author={Li-Ping Yang and Farhad Khosravi and Zubin Jacob}, year={2020} }

All elementary particles in nature can be classiﬁed as fermions with half-integer spin and bosons with integer spin. Within quantum electrodynamics (QED), even though the spin of the Dirac particle is well deﬁned, there exist open questions on the quantized description of spin of the gauge ﬁeld particle—the photon. Using quantum ﬁeld theory, we discover the quantum operators for the spin angular momentum (SAM) S (1 and orbital angular momentum (OAM) L x × A µ of the photon, where π µ is the…

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