  We consider aspects of the low energy description of global cosmic strings.
In the non-relativistic limit, we study the extent to which these are described
by the combination of the Nambu-Gotto and Kalb-Ramond actions. While in a
formal sense this is the case for infiniately long strings, for more realistic
situations, the collective coordinates of the system do not provide a complete
description for more than brief intervals; as time evolves it becomes necessary
to include low momentum goldstone excitations as well.
