Understanding Counter Term Renormalization in Quantum Field Theory

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SUMMARY

This discussion focuses on counter term renormalization in Quantum Field Theory (QFT), specifically addressing the elimination of infinities in loop calculations. The key point raised is the equivalence of inserting mass counter terms in one-loop diagrams to the derivative of the one-loop diagram multiplied by the mass counter term. The discussion references arXiv:hep-ph/9406431, particularly equation (3.6), and highlights Chapter 5 of a QFT manuscript for further insights into perturbative renormalization theory and the renormalization group.

PREREQUISITES
  • Understanding of Quantum Field Theory (QFT)
  • Familiarity with loop calculations in quantum physics
  • Knowledge of perturbative renormalization theory
  • Basic concepts of the renormalization group
NEXT STEPS
  • Study arXiv:hep-ph/9406431, focusing on equation (3.6)
  • Read Chapter 5 of the provided QFT manuscript for detailed insights
  • Explore Mccomb's textbook on QFT for beginner-friendly explanations
  • Research the implications of mass counter terms in renormalization schemes
USEFUL FOR

Students and researchers in theoretical physics, particularly those specializing in Quantum Field Theory and renormalization techniques.

mandy96
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Currently, I am reading about counter term renormalization used to eliminate the infinities in the loop calculations involved in QFT calculations. I found somewhere that the insertion of mass counter terms in one loop diagrams is equivalent to the derivative of one loop diagram multiplied with mass counter term. I am not getting this point.. If anybody can help me with that it would be very helpful.. Thanks..
For reference : arXiv:hep-ph/9406431 equation no. (3.6 ) in this..
Currently, I am reading about counter term renormalization used to eliminate the infinities in the loop calculations involved in QFT calculations. I found somewhere that the insertion of mass counter terms in one loop diagrams is equivalent to the derivative of one loop diagram multiplied with mass counter term. I am not getting this point.. If anybody can help me with that it would be very helpful.. Thanks..
For reference : arXiv:hep-ph/9406431 equation no. (3.6 ) in this..
 

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Have a look at my QFT manuscript:

https://itp.uni-frankfurt.de/~hees/publ/lect.pdf

In Chpt. 5 you find perturbative renormalization theory. The discussion of different renormalization schemes and how the derivatives wrt. mass to define the counter terms come into the game is in Sect. 5.11 about the renormalization group.
 
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vanhees71 said:
Have a look at my QFT manuscript:

https://itp.uni-frankfurt.de/~hees/publ/lect.pdf

In Chpt. 5 you find perturbative renormalization theory. The discussion of different renormalization schemes and how the derivatives wrt. mass to define the counter terms come into the game is in Sect. 5.11 about the renormalization group.
Thanks... I will surely take a look...
 

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