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Answer by user4552 for What is the significance of the conformal invariance...
Thus, if I understand correctly, a conformal transformation (which is a coordinate transformation that changes the metric only up to an overall factor) should also be a general coordinate...
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I am a confused about the role of symmetry transformations in a covariant formulation.Maxwell's equations can be shown to be invariant under conformal transformations. See e.g. here:...
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