Feynman Rules for Scalar QED: LRZ Reading

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Discussion Overview

The discussion revolves around the derivation of the Feynman rules for scalar quantum electrodynamics (QED), with participants seeking resources and guidance on the topic. The scope includes theoretical aspects of quantum field theory and the application of these rules in calculations.

Discussion Character

  • Exploratory
  • Technical explanation
  • Homework-related

Main Points Raised

  • Some participants request guidance on where to find a derivation of the Feynman rules for scalar QED.
  • One participant mentions "M. Schwartz, Quantum Field Theory and the Standard Model" as a resource that contains a chapter on scalar QED but notes that it only lists the rules without derivation.
  • Another participant suggests that deriving the rules independently could be a valuable exercise, especially since the correct results are accessible.
  • A participant expresses confusion about certain steps in the derivation process and indicates a preference for finding existing resources rather than posting their work for help.
  • Another participant challenges this reasoning, comparing it to a scenario in homework forums where someone seeks a solution without attempting the problem first.

Areas of Agreement / Disagreement

Participants do not reach a consensus on the best approach to obtaining the derivation. There are differing opinions on whether to seek existing resources or to attempt the derivation independently.

Contextual Notes

Some participants express uncertainty about specific steps in the derivation process and the challenges of typing out complex calculations, indicating potential limitations in their understanding or resources.

Silviu
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Hello! Can someone direct me towards a reading where the Feynman rules for scalar QED are derived? Thank you!
 
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Silviu said:
Hello! Can someone direct me towards a reading where the Feynman rules for scalar QED are derived? Thank you!
For example, in "M. Schwartz, Quantum Field Theory and the Standard Model". The book has a whole chapter about scalar QED.
 
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eys_physics said:
For example, in "M. Schwartz, Quantum Field Theory and the Standard Model". The book has a whole chapter about scalar QED.
Thank you! That is the book I am using actually and I am at that chapter, but in that book the rules are just listed, I would like a full derivation, the same way it is done in previous chapters for the ##\phi^3## interaction.
 
Why don't you derive them yourself? It is a worthwhile exercise and a good opportunity to do it in a case where you have access to the correct result.
 
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Orodruin said:
Why don't you derive them yourself? It is a worthwhile exercise and a good opportunity to do it in a case where you have access to the correct result.
I tried, but I am confused at certain steps. I would normally post here what I did so far and ask for help, but I am sure they are derived in some book already (also typing down everything would be quite time consuming as there are many indices).
 
Silviu said:
I would normally post here what I did so far and ask for help, but I am sure they are derived in some book already (also typing down everything would be quite time consuming as there are many indices).
Sorry, I do not buy this line of reasoning. To me it sounds as if someone posting in the homework forums would say "I would normally solve this problem, but it is difficult so instead I want you to give me the solution". I suggest you do exactly that, post what you have done so far and specify the steps where you are stuck.
 
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