  We study the competition between domain coarsening in a symmetric binary
mixtures below the critical temperature and turbulent fluctuations. We find
that the coarsening process is arrested in presence of turbulence. The physics
of the process shares remarkable similarities with the behaviour of diluted
turbulent emulsions and the arrest length scale can be estimated with an
argument similar to the one proposed by Kolmogorov and Hinze for the maximal
stability diameter of droplets in turbulence. Although in the absence of flow
the microscopic diffusion constant is negative, turbulence does effectively
arrest the inverse cascade of concentration fluctuations by making the low
wavelength diffusion constant positive for scales above the Hinze length.
