Dirac Propagator: Learn to Reach 8.2

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    Dirac Propagator
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Discussion Overview

The discussion revolves around the process of deriving the Dirac propagator, specifically aiming to reach a certain result labeled as 8.2. Participants share their approaches, challenges, and requests for clarification regarding the derivation process.

Discussion Character

  • Homework-related
  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant expresses a desire to understand how to reach the result 8.2.
  • Another suggests applying the derivative to the integrand as a potential solution.
  • A participant indicates they have only applied the derivative with respect to time and requests more detailed guidance.
  • Some participants express frustration over the lack of detail provided by the original poster and request clearer communication about their process and difficulties.
  • A later reply indicates that the participant successfully applied the derivative again and reached the answer, thanking others for their help.
  • One participant reflects on the need for clearer explanations in physics literature, noting that alternative approaches might lead to confusion and wasted time in understanding the derivation.

Areas of Agreement / Disagreement

The discussion includes multiple viewpoints regarding the best approach to derive the result, and there is no consensus on the most effective method or the clarity of communication among participants.

Contextual Notes

Participants express varying levels of familiarity with the topic and the rules of the forum, which may affect their ability to communicate effectively. There are indications of assumptions about prior knowledge and the derivation process that remain unaddressed.

Ayoub Tamin
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TL;DR
I looked for details in every book but they'all say we can easily write
wanna know how to get to 8.2
 

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Ayoub Tamin said:
Summary:: I looked for details in every book but they'all say we can easily write

wanna know how to get to 8.2
Did you try applying the derivative to the integrand? It directly gives the answer.
 
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nrqed said:
Did you try applying the derivative to the integrand? It directly gives the answer.
I did apply the derivative of time only, can u put more details please?
 
Is it too much to ask that you write more? (and to use real words, unlike "please" and "wanna") We're trying to help you, but you seem resistant to telling us what you're doing and where you are stuck.
 
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Vanadium 50 said:
Is it too much to ask that you write more? (and to use real words, unlike "please" and "wanna") We're trying to help you, but you seem resistant to telling us what you're doing and where you are stuck.
sorry, I just read the rules here, I'm kinda new it won't happen again.
 
But you're still not telling us what you are doing and where you are stuck!
 
I tried to apply the derivative again and I got the answer now. thank you all and sorry for the messed up thread.
 
I miss this type of explanations in the physics books because even for people not especially strong at maths this derivation will be doable but, what if you first try to do other things to figure out the derivation, you may end losing a lot of time in the process of understanding it.
 

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