Field equations fully written out

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SUMMARY

The discussion centers on the challenge of fully writing out the Einstein field equations in terms of the coefficients of the metric tensor and their derivatives. Participants emphasize the impracticality of this task, suggesting that the use of tensor notation is preferred for efficiency. A recommendation is made to utilize the Maxima or wxMaxima program with the ctensor package to facilitate this process. Users are cautioned about the potential frustration and time investment required to complete the task.

PREREQUISITES
  • Understanding of Einstein field equations
  • Familiarity with metric tensors
  • Knowledge of Christoffel symbols
  • Experience with computer algebra systems, specifically Maxima or wxMaxima
NEXT STEPS
  • Learn how to use Maxima for symbolic computation
  • Explore the ctensor package for tensor calculations
  • Study the derivation of the Einstein tensor from the metric tensor
  • Research the implications of using tensor notation in general relativity
USEFUL FOR

Students and researchers in theoretical physics, mathematicians interested in general relativity, and anyone looking to deepen their understanding of tensor calculus and its applications in physics.

greypilgrim
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Hi,

Does anybody know a link where the Einstein field equations are fully written out, i.e. in terms of only the coefficients of the metric tensor and derivatives on the left side? I'm just curious how huge this must be.
 
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Write them yourself. No spoon feeding on PF.
 
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greypilgrim said:
Does anybody know a link where the Einstein field equations are fully written out, i.e. in terms of only the coefficients of the metric tensor and derivatives on the left side? I'm just curious how huge this must be.

I don't know why anyone would want to do such a thing - avoiding such overkill is precisely one of the reasons why we use tensor notation. But if you are really curious, you can always try and do this yourself - start with the expression for the Einstein tensor in terms of the metric and the Christoffel symbols, and simply expand all terms and sums. HINT : you are going to need a lot of patience, and a lot of paper :nb)
 
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dextercioby said:
Write them yourself. No spoon feeding on PF.
Markus Hanke said:
I don't know why anyone would want to do such a thing - avoiding such overkill is precisely one of the reasons why we use tensor notation. But if you are really curious, you can always try and do this yourself - start with the expression for the Einstein tensor in terms of the metric and the Christoffel symbols, and simply expand all terms and sums. HINT : you are going to need a lot of patience, and a lot of paper :nb)

I don't think this is an issue of spoon feeding as the educational value of what the OP is asking for is pretty minimal at best (maybe as a wallpaper design?). I think we all know (hope?) that the OP will give up before achieving the objective.

So, to the OP:
I would advise you to obtain the maxima or wxmaxima program with the ctensor package, set up a metric with all components present and use the ctensor features to generate the output of Einstein's Equation. I can pretty much guarantee that you will get bored and abandon the attempt before the answer has even finished scrolling by. But at least you will have learned something nontrivial about using a computer algebra system, which you might well find useful at some point in the future.
 
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