Constraining the effective action by a method of external sources

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Constraining the effective action by a method of external sources

We propose a novel method of evaluating the effective action, wherein the physical one- and two-point functions are obtained in the limit of non-vanishing external sources. We illustrate the self-consistency of this method by recovering the usual 2PI effective action due to Cornwall, Jackiw and Tomb...

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Bibliographic Details
Main Authors:	Garbrecht, Björn, Millington, Peter
Format:	Article
Published:	Elsevier 2016
Online Access:	https://eprints.nottingham.ac.uk/47782/

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