How does a photon carry force?

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    Force Photon
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SUMMARY

The discussion centers on how photons transmit electromagnetic (EM) force between charged particles, specifically addressing the mechanism by which a proton exerts force on an electron through photon exchange. Participants highlight that while photons are often viewed as carriers of energy, their role in force transmission is complex and involves interference effects. The conversation emphasizes that the transverse nature of EM waves does not preclude the exertion of force in a specific direction, as the interaction between particles involves both electric and magnetic components, leading to a net force. The concept of virtual photons is introduced, indicating that they facilitate force exchange without being free quanta like emitted light.

PREREQUISITES
  • Quantum Electrodynamics (QED) principles
  • Understanding of virtual photons and their properties
  • Feynman's QED framework
  • Basic knowledge of electromagnetic fields and forces
NEXT STEPS
  • Study the role of virtual photons in force transmission in Quantum Field Theory
  • Examine the Poynting vector and its implications for energy flow in EM fields
  • Explore the concept of wave-particle duality in quantum mechanics
  • Investigate the implications of interference effects in particle interactions
USEFUL FOR

Physicists, students of quantum mechanics, and anyone interested in the fundamental interactions of charged particles and the role of photons in electromagnetic theory.

  • #61
Frame Dragger said:
:rolleyes:

Yes, that is the whole point, with QED picture there is no "action at a distance" since I said that force is change in momentum, anything that carries momentum can exert a force by passing on the momentum.
Every photon can only be specified by its momentum and its polarization
 
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