Anomalous symmetries are those for which the Lagrangian stays invariant but the measure of the functional integral does not. I wonder if there are transformations that change both the action and the measure, such that the functional integral is left invariant, is this possible?
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Possible duplicate: http://physics.stackexchange.com/q/231610/2451 – Qmechanic Jan 31 '16 at 08:05