Determining the Action of the Electromagnetic Field - Examples

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Discussion Overview

The discussion revolves around finding explicit numerical examples for determining the electromagnetic Lagrangian as presented in Landau Volume 2. Participants express difficulty in locating practical references or examples that apply the theoretical concepts discussed in the text.

Discussion Character

  • Exploratory, Homework-related

Main Points Raised

  • One participant references an expression for the electromagnetic Lagrangian from Landau but seeks numerical examples to clarify its application.
  • Another participant provides a link to lecture notes, suggesting it may contain relevant information.
  • A different participant notes that the provided resource does not address how to use a specific term from the Lagrangian in a numerical example.
  • One participant humorously suggests the existence of a book dedicated to practical calculations based on theoretical physics, indicating a perceived gap in available resources.
  • A final participant expresses frustration with the situation, implying a desire for more accessible examples.

Areas of Agreement / Disagreement

Participants generally agree on the challenge of finding explicit numerical examples related to the electromagnetic Lagrangian, but no consensus exists on available resources or solutions.

Contextual Notes

Participants express uncertainty regarding the application of specific terms in the Lagrangian and the lack of practical examples in existing literature.

bolbteppa
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In Landau Volume 2 (page 71) an expression for determining the entire electromagnetic Lagrangian is given. What would be an explicit numerical examples of working this idea out along the lines Landau threads, or a good reference for finding these? I can't find anything despite looking in several books,& the whole thing just looks far too general & theoretical to me...
 
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Unfortunately it doesn't, no mention is made of how to use the crazy term [itex]\tfrac{1}{16 \pi c} \smallint f_{ik}F^{ik} d \Omega[/itex] in an explicit baby-numerical example, for example, but it is interesting nonetheless.
 
Your probably looking for that famous book "How to do practical calculations based on your Advanced Theoretical Physics text". Good luck!
 
I can dream...

:cry:
 

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