  The critical properties of a type-II superconductor model are investigated
using a dual vortex representation. Computing the propagators of gauge field
$\vec{A}$ and dual gauge field $\vec{h}$ in terms of a vortex correlation
function, we obtain 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
existence of a stable charged fixed point of the theory, not in the 3DXY
universality class.
