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Why do we not call V[itex]_{eff}[/itex]=[itex]\Gamma_{eff}[/itex]/VT (where [itex]\Gamma[/itex][itex]_{eff}[/itex] is the effective action, VT is spacetime volume) being density of effective action of field?

Thank you very much in advance.

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# Why do we not call the effective potential(QFT) being density of effective action?

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