Vortex pair creation on brane-antibrane pair via marginal deformation

It has been conjectured that the vortex solution on a D-brane anti-D-brane system represents a D-brane of two lower dimension. We establish this result by first identifying a series of marginal deformations which create the vortex-antivortex pair on the brane-antibrane system, and then showing that under this series of marginal deformations the original D-brane anti-D-brane system becomes a D-brane anti-D-brane system with two lower dimensions. Generalization of this construction to the case of solitons of higher codimension is also discussed. (Author)