  At very high densities, as for example in the core of a neutron star, matter
may appear in the color-flavor locked (CFL) phase, which is a superfluid. This
phase features topologically stable vortex solutions, which arise in a spinning
superfluid as localized configurations carrying quanta of angular momentum.
Despite the topological stability of these vortices they are not the lowest
energy state of the system at neutron star densities and decay into triplets of
semi-superfluid fluxtubes. In these proceedings we report on the progress of
our numerical study in the Ginzburg-Landau approach, where we investigate
lattices of semi-superfluid fluxtubes. The fluxtubes are obtained through
controlled decay of global vortex configurations in the presence of a gauge
field. Understanding the dynamics of semi-superfluid string configurations is
important in the context of angular momentum transfer from a quark matter core
of a neutron star beyond the core boundary, since not vortex-, but fluxtube
pinning seems to be the relevant mechanism in this scenario.
