Dirac Propagator: Learn to Reach 8.2

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    Dirac Propagator
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SUMMARY

The discussion centers on the application of derivatives to integrands in order to derive the Dirac propagator, specifically reaching version 8.2. Participants emphasize the importance of clear communication and detail in problem-solving. One user successfully applied the derivative of time to obtain the answer after initial confusion, highlighting the need for straightforward explanations in physics literature. The conversation underscores the significance of methodical approaches in mathematical derivations to avoid wasting time.

PREREQUISITES
  • Understanding of calculus, specifically derivatives and integrals.
  • Familiarity with the Dirac propagator in quantum mechanics.
  • Basic knowledge of physics terminology and notation.
  • Ability to communicate mathematical problems clearly.
NEXT STEPS
  • Study the application of derivatives in quantum mechanics, focusing on the Dirac propagator.
  • Explore advanced calculus techniques for integrals and derivatives.
  • Review physics textbooks that emphasize clear mathematical derivations.
  • Practice problem-solving by applying derivatives to various integrands.
USEFUL FOR

Students and researchers in physics, particularly those studying quantum mechanics and mathematical methods in physics, will benefit from this discussion.

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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