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• CommentRowNumber1.
• CommentAuthorUrs
• CommentTimeSep 6th 2017

Gave some content to causal propagator: an Idea-section and the main formulas for the causal propagator on Minkowski spacetime.

• CommentRowNumber2.
• CommentAuthorUrs
• CommentTimeSep 6th 2017

I have also added statement and proof of the expression as a contour integral: now the last item here

(All these formulas suffer from prefactor ambiguities due to various possible different conventions and due to the computations being prone to prefactor errors. I am trying to be self-consistent, but I won’t be surprised if there are prefactor errors left. But once I am through with this and related entries, I’l go through them all once more and will streamline them.)

• CommentRowNumber3.
• CommentAuthorUrs
• CommentTimeNov 28th 2017

I believe I have now compiled complete proof of the wave front sets of the causal, Hadamard and Feynman propagator on Minkowski spacetime, here.

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