The critical properties of a type-II superconductor model are investigated
using a dual vortex representation. Computing the propagators of gauge fiel
d A and dual gauge field h in terms of a vortex correlation function, we ob
tain the values eta(A) = 1 and, eta(h) = 1 for their anomalous dimensions.
This provides support for a dual description of the Ginzburg-Landau theory
of type-II superconductors in the continuum limit, as well as for the exist
ence of a stable charged fixed paint of the theory, not in the 3D XY univer
sality class.