What is the connection between path integrals and cross sections?

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SUMMARY

The discussion centers on the relationship between path integrals and cross sections in high energy physics, specifically referencing Lewis Ryder's Quantum Field Theory (QFT) book. The primary connection identified is through the LSZ-reduction formula, which links the path integral formulation to observable quantities like cross sections. Participants emphasize that understanding this relationship is crucial for grasping how theoretical models translate into experimental results.

PREREQUISITES
  • Familiarity with Quantum Field Theory (QFT)
  • Understanding of path integrals in physics
  • Knowledge of the LSZ-reduction formula
  • Basic concepts of cross sections in particle physics
NEXT STEPS
  • Study the LSZ-reduction formula in detail
  • Explore path integral formulation techniques in Quantum Field Theory
  • Research the role of cross sections in particle collision experiments
  • Read Lewis Ryder's QFT book for deeper insights into these concepts
USEFUL FOR

Students and researchers in high energy physics, particularly those focusing on Quantum Field Theory and its applications in understanding particle interactions and experimental outcomes.

earth2
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Hey folks,

i am currently making myself familiar with the path integral in high energy physics by reading Lewis Ryder's QFT book. I do have a question however, since i do not really understand the connection between the path integral and the cross section of a process. Are they only related to each other via the LSZ-reduction formula or is there some other way?

Thanks!
earth2
 
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