Quantum field theory for spin operator of the photon

@article{Yang2022QuantumFT,
  title={Quantum field theory for spin operator of the photon},
  author={Li-Ping Yang and Farhad Khosravi and Zubin Jacob},
  journal={Physical Review Research},
  year={2022}
}
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… 

Figures and Tables from this paper

Duality Symmetry of Quantum Electrodynamics
The duality symmetry between electricity and magnetism hidden in classical Maxwell equations suggests the existence of dual charges, which have usually been interpreted as magnetic charges and have
Conservation laws for electron vortices in strong-field ionisation
TLDR
This work formulates a new variant of the well-known strong field approximation and derives conservation laws for the angular momenta of twisted electrons in the cases of linear and circularly polarised fields, and shows that the photoelectron OAM emission spectra are sensitive to the parity of the number of laser cycles.
Duality Symmetry of Quantum Electrodynamics and Magnetic Charges
The duality symmetry between electricity and magnetism hidden in classical Maxwell equations suggests the existence of dual charges, which have usually been interpreted as magnetic charges and have
Optically induced static magnetic field in the ensemble of nitrogen-vacancy centers in diamond.
Generation of a local magnetic field at the nanoscale is desirable for many applications such as spin-qubit-based quantum memories. However, this is a challenge due to the slow decay of static
Quantum theory of photonic vortices and quantum statistics of twisted photons
The topological charge of a photonic vortex is the essential quantity in singular optics and the critical parameter to characterize the vorticity of twisted light. However, the definition of the
Spin angular momentum of gravitational wave interference
Spin angular momentum (SAM) is an important feature for wave systems, prominent in various properties like spin-momentum locking of wave propagations. Here, we study the SAM of gravitational waves in

References

SHOWING 1-10 OF 66 REFERENCES
The Theory of Photons and Electrons. The Relativistic Quantum Field Theory of Charged Particles with Spin One-half
1 General Principles.- 1-1 The natural unit system.- 1-2 Some fundamental notions of the special theory of relativity.- 1-3 Some basic notions of quantum mechanics.- 1-4 Localizability.- 1-5
Classical Electrodynamics
Electrodynamics of Particles and PlasmasBy P. C. Clemmow and J. P. Dougherty. (Addison-Wesley Series in Advanced Physics.) Pp. ix + 457. (Addison-Wesley London, September 1969.) 163s.
Gauge-Invariant Decomposition of Nucleon Spin
I introduce a gauge invariant decomposition of the nucleon spin into quark helicity, quark orbital, and gluon contributions. The total quark (and hence the quark orbital) contribution is shown to be
The angular momentum controversy: What's it all about and does it matter?
Field quantization (Springer
  • Science & Business Media,
  • 2013
and G
  • Grynberg, Photons and Atoms-Introduction to Quantum Electrodynamics
  • 1997
Spin and Orbital Angular Momentum of Photons
We consider the separation of the total angular momentum of the electromagnetic field into a "spin" and an "orbital" part. Though this separation is normally considered to be unphysical and not
Commutation rules and eigenvalues of spin and orbital angular momentum of radiation fields
We investigate the separation of the total angular momentum J of the electromagnetic field into a 'spin' part S and an 'orbital' part L . We show that both `spin' and 'orbital' angular momentum are
...
...