Foundations of Physics

, Volume 24, Issue 11, pp 1519–1542 | Cite as

The magnetic fields and rotation generators of free space electromagnetism

  • M. W. Evans
Article
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Abstract

The relation is developed between rotation generators of the Lorentz group and the magnetic fields of free-space electromagnetism. Using these classical relations, it is shown that in the quantum field theory there exists a longitudinal photomagneton, a quantized magnetic flux density operator which is directly proportional to the photon spin angular momentum. Commutation relations are given in the quantum field between the longitudinal photomagneton and the usual transverse magnetic components of quantized electromagnetism. The longitudinal component is phase free, but the transverse components are phase dependent. All three components can magnetize material in general, but only the transverse components contribute to Planck's law. The photon therefore has three, not two, relativistically invariant degrees of polarization, an axial, longitudinal, polarization, and the usual right and left circular transverse polarizations. Since the longitudinal polarization is axial, it is a phase- free magnetic field.

Keywords

Magnetic Flux Electromagnetism Density Operator Transverse Component Lorentz Group 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.
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Copyright information

© Plenum Publishing Corporation 1994

Authors and Affiliations

  • M. W. Evans
    • 1
  1. 1.Department of PhysicsUniversity of North CarolinaCharlotte

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