High School Does the Feynman diagram process actually exist, or is it just for computation?

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SUMMARY

Feynman diagrams serve as graphical representations of mathematical expressions used in perturbation theory, specifically for quantum field theory calculations. They do not represent physical processes or the existence of virtual particles in a tangible sense; rather, they are tools for computation. The discussion emphasizes that attributing physical reality to Feynman diagrams or virtual particles extends into philosophical territory, as they are fundamentally mathematical constructs.

PREREQUISITES
  • Understanding of quantum field theory
  • Familiarity with perturbation theory
  • Basic knowledge of Feynman diagrams
  • Mathematical proficiency in interpreting graphical representations
NEXT STEPS
  • Research the mathematical foundations of quantum field theory
  • Explore the role of perturbation theory in particle physics
  • Study the implications of virtual particles in quantum mechanics
  • Examine philosophical interpretations of quantum mechanics
USEFUL FOR

Physicists, students of quantum mechanics, and anyone interested in the mathematical frameworks of particle interactions and their philosophical implications.

ronnie snooker
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i want to known whether virtual particle exist or not , and does exchange of particle really happen in interaction.
 
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You can't point to an interaction and say "it was this Feynman diagram". They are tools for calculations in perturbation theory, just like the virtual particles in the diagrams.
I fear everything beyond that is philosophy.
 
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Just to hammer the point: Feynman diagrams are graphical representations of mathematical expressions for different terms in a perturbative expansion. There is nothing more to them than that.
 
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thanks for all of you!
 
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