Local Lorentz invariance of propagator on curved spaces

  • #1
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I am looking for a proof that the Feynman propagator is locally a lorentz invariant (at least for scalar fields) also in curved space-times if the background geometry is smooth enough.
I mean, since it is of course a lorentz invariant on flat spaces, this should also be true if a choose a sufficiently small portion of the space and the background geometry is sufficiently smooth, even if it should contain non-local terms when evaluated between well distanced spacetime points.
Some advice on where I can find something like that?
 

Answers and Replies

  • #2
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Thanks for the post! This is an automated courtesy bump. Sorry you aren't generating responses at the moment. Do you have any further information, come to any new conclusions or is it possible to reword the post?
 

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