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 zwoodrow Mar29-10 09:31 PM

Christoffel symbols

I am learning about christoffel symbols and there is a pretty standard representation of christoffel symbols as a linear combination of products of the metric tensor and the metric tensors derivative. However when this is derived it is always done in a hoakey manner. Something along the lines of .... do these permutations add this subtract that and walllaaa. I am trying to make a more physically intuitive proof based off the covariant derivative of the metric tensor being equal to zero. Has anyone seen this proof somewhere i havent got it to work out and i am looking go help.

 nicksauce Mar29-10 09:54 PM

Re: Christoffel symbols

Check out chapter 3 of Wald's GR book.

 Fredrik Mar29-10 10:27 PM

Re: Christoffel symbols

I think the best place to read about connections is "Riemannian manifolds: an introduction to curvature", by John Lee. But I don't remember how he did this particular thing.

 HallsofIvy Mar30-10 07:38 AM

Re: Christoffel symbols

The ordinary derivative of a tensor is NOT a tensor. In order to make it one, the "covariant derivative", you have to subtract off the Christoffel symbols- or, to put it another way, the Chrisoffel symbols are the covariant derivative minus the ordinary derivative.

 dx Mar30-10 10:48 AM

Re: Christoffel symbols

Quote:
 Quote by zwoodrow (Post 2645961) I am trying to make a more physically intuitive proof based off the covariant derivative of the metric tensor being equal to zero. Has anyone seen this proof somewhere i havent got it to work out and i am looking go help.
Yes, you can find it in MTW exercise 8.15. It has an outline solution too.

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