  Remarkable simplification arises from considering vortex equations in the
large winding limit. This was recently used in [1] to display all sorts of
vortex zeromodes, the orientational, translational, fermionic as well as
semi-local, and to relate them to the apparently distinct phenomena of the
Nielsen-Olesen-Ambjorn magnetic instabilities. Here we extend these analyses to
more general types of BPS nonAbelian vortices, taking as a prototype a system
with gauged U(1) x SU(N) x SU(N) symmetry where the VEV of charged scalar
fields in the bifundamental representation breaks the symmetry to SU(N)_{l+r} .
The presence of the massless SU(N)_{l+r} gauge fields in 4D bulk introduces all
sorts of non-local, topological phenomena such as the nonAbelian Aharonov-Bohm
effects, which in the theory with global SU(N)_r group (g_r=0) are washed away
by the strongly fluctuating orientational zeromodes in the worldsheet. Physics
changes qualitatively at the moment the right gauge coupling constant g_r is
turned on.
