The Derrick scaling of the Abelian Higgs energy must rescale the gauge potential as well as the Higgs field. Set
Then and
Let , and , with all integrals over the plane. Changing variables gives
At a static solution, . Consequently
The covariant-gradient contribution is scale invariant, while the magnetic and potential terms balance. This is why the scalar-only nonexistence conclusion does not extend to the Abelian Higgs model.