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Is there any example of explicit one loop computation for Witten diagrams? It seems like it will be hard to compute for even for a simple $\phi^4$ theory in the bulk.

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  • $\begingroup$ Vibert had posted an answer which is really a comment. However, it links to a valuable resource, so I'll put it down here (remove this comment if you convert the answer to a comment): "It's done in the Penedones paper arxiv.org/abs/1011.1485." $\endgroup$ Commented Jul 27, 2013 at 18:18

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