There is a good description about " Difference between 1PI effective action and Wilsonian effective action? " here. Now, what is the difference between average effective action, which we use that in ERGE , and Wilsonian effective action?

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    $\begingroup$ What is the average effective action? What is an ERGE? $\endgroup$ – AccidentalFourierTransform Dec 28 '17 at 16:42
  • $\begingroup$ @AccidentalFourierTransform : By ERGE I mean exact renormalization group equation . $\endgroup$ – Astrolabe Dec 28 '17 at 16:46

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