(Peskin and Schroeder) Numerator of vertex correction

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SUMMARY

The discussion centers on a calculation issue encountered while studying quantum field theory (QFT) using the textbook "An Introduction to Quantum Field Theory" by Peskin and Schroeder. The user reported an unexpected additional term, specifically ## 2m(z-xy)(mγ^μ - p^μ) ##, appearing in their calculations on page 192. After multiple attempts to resolve the issue, the user concluded that the problem may have stemmed from a mistake in their calculations, although they did not specify the exact nature of the error.

PREREQUISITES
  • Understanding of quantum field theory principles
  • Familiarity with Peskin and Schroeder's textbook
  • Knowledge of spinor algebra and gamma matrices
  • Basic proficiency in tensor calculus
NEXT STEPS
  • Review the derivation of vertex corrections in QFT
  • Study the properties and applications of gamma matrices
  • Explore common pitfalls in QFT calculations
  • Practice problems related to spinor interactions in QFT
USEFUL FOR

This discussion is beneficial for students and researchers in quantum field theory, particularly those using Peskin and Schroeder's textbook, as well as anyone facing challenges with vertex corrections and spinor calculations.

ndcat10
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Hi I am studying qft with worldwidely used text, written by Peskin and Schroeder, An introduction to qft. I have trouble with the calculation of thr numerator on pp. 192. I got additional term ## 2m(z-xy)(mγ^μ - p^μ) ## between spinors, which seems not vanishing. Is there any idea to treat this problem? Thanks in advance
 
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The problem is solved. Maybe I made mistake somewhere.(I calculated hundreds times to exaggerate.) Anyway thanks for reading this annoying post(at least I think I made another trash, but more than 100 people read this)
 

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