Does Light Have a Charge? Mystery Explored

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SUMMARY

Light does not possess a charge, meaning it does not exhibit attractive or repulsive forces like charged particles. The discussion highlights the phenomenon of light by light scattering, which can occur beyond tree level interactions, involving photons fluctuating into fermion pairs, forming closed loop diagrams. This advanced concept illustrates the complexities of quantum electrodynamics and the behavior of photons in high-energy physics.

PREREQUISITES
  • Understanding of quantum electrodynamics
  • Familiarity with fermions and bosons
  • Knowledge of particle physics diagrams, specifically loop diagrams
  • Basic grasp of photon behavior in high-energy interactions
NEXT STEPS
  • Study quantum electrodynamics in detail
  • Explore the concept of light by light scattering
  • Research fermion pair production and its implications
  • Learn about particle physics diagrams, focusing on closed loop diagrams
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Physicists, students of particle physics, and anyone interested in the fundamental properties of light and its interactions in quantum mechanics.

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http://www.physorg.com/news166711942.html"

I was told here that light didn't have an attractive/repulsive force (charge)?
 
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gonegahgah said:
http://www.physorg.com/news166711942.html"

I was told here that light didn't have an attractive/repulsive force (charge)?

Light by light scattering does not occur only at tree level. Basically, you can have the photons fluctuating simultaneously into two fermion pairs. That forms a closed loop (box) diagram. It's quite interesting and challenging.
 
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Thanks humanino.
Sorry I didn't realize you were answering my question until I looked up what a fermion was.
 

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