The QED Coupling Constant for an Electron to Emit or Absorb a Photon is Shown to be the Square Root of the Fine Structure Constant α
Résumé
The QED probability amplitude (coupling constant) for an electron to interact with its own field or to emit or absorb a photon has been experimentally determined to be-0.08542455. This result is very close to the square root of the Fine Structure Constant α. By showing theoretically that the coupling constant is indeed the square root of α we resolve what is, according to Feynman, one of the greatest damn mysteries of physics.
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