TRAVELING WAVES IN MULTIVORTEX CONFIGURATIONS

We investigate zero modes of a multivortex background which are due to the energetic degeneracy of the planar static n-vortex solution in Bo gomol'nyi limit of the Abelian Higgs model parametrised by a set of 2n real parameters. The zero modes take the form of waves travelling wit h a speed of light independently along each of the vortices irrespecti vely to their mutual separations. String description of these zero mod es is constructed. We also comment on the remnants of the modes a litt le outside of the Bogomol'nyi limit.