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## Main Question or Discussion Point

It occurred to me that I hadn't seen GR developed as a gauge theory in the same way QCD/electroweak are.

Are there any technical obstacles, or is it reasonably straightforward? And if it is well known, can someone please point me to a reference? Thanks.

Are there any technical obstacles, or is it reasonably straightforward? And if it is well known, can someone please point me to a reference? Thanks.